Contents

Country Overview

São Tomé and Príncipe, officially the Democratic Republic of São Tomé and Príncipe, is a small equatorial island country in the Gulf of Guinea, off the west-central African coast. Its national capital is São Tomé. Formerly a Portuguese colony organized around Atlantic plantations, it became independent on July 12, 1975. Since constitutional reforms in 1990–1991 it has maintained a competitive multiparty political system. [2] [22] [6]

President Carlos Manuel Vila Nova won reelection in July 2026. Prime Minister Américo Ramos was the latest independently confirmed head of government in sources reviewed for this edition; government-formation negotiations followed the inconclusive September 2026 parliamentary election. Cocoa, palm products, fishing, services and tourism contribute to the economy. [8] [9] [11] [14]

Reference status: Contemporary edition • Verified: November 5, 2026 • Statistical reference years are stated beside each observation.

CapitalSão ToméNational capital [2]
Population240,2542025 World Bank [1]
Total area1,001 km²National reference [5]
Nominal GDPUS$981.29 million2025 World Bank [1]
GDP per capitaUS$4,084.42025 World Bank [1]
CurrencyDobraSTN; euro-pegged [5]

Important reference distinctions: The 2024 national census reported 209,607 residents (published as provisional); the World Bank’s 2025 population estimate is 240,254. National area references report 1,001 km², while the UN pocketbook lists 964 km²; neither number is silently substituted for the other. The 2023 WTO merchandise and 2024 UNCTAD merchandise/services series cover different years. The 2026 legislative vote yielded no single-party majority. [3] [1] [2] [14] [15] [11]

Identity and State Formation

Official name
Democratic Republic of São Tomé and Príncipe (Portuguese: República Democrática de São Tomé e Príncipe). [6]
Common short name
São Tomé and Príncipe; also written Sao Tome and Principe without diacritics.
Demonym
São Toméan; São Toméan and Príncipean in descriptive English; Santomense in Portuguese.
Capital
São Tomé, on the northeast coast of the larger island. [2]
Continent
Africa.
United Nations geographical subregion
Middle Africa, also commonly described as Central Africa and the Gulf of Guinea. [2]
Physical setting
An Atlantic archipelago of two principal volcanic islands and neighboring islets, just north of the Equator. [5]
Indigenous settlement before Portuguese arrival
The islands are generally understood to have been uninhabited before Portuguese maritime colonization in the late fifteenth century. [22]
Early Portuguese contact
Portuguese navigators reached the islands during the 1470s; settlement developed in the late fifteenth century. [22]
Colonial authority
Portugal; the islands became plantation colonies in the Portuguese Atlantic empire. [22]
Historical plantation economy
Sugar production was prominent in the sixteenth century; coffee and cocoa became especially important in the nineteenth and twentieth centuries. [22] [18]
Enslavement and coerced labor
Colonial agricultural production depended historically on slavery and, later, forced or coercive migrant labor. [22] [18]
Independence
July 12, 1975, from Portugal. [22]
First president after independence
Manuel Pinto da Costa, leader of the Movement for the Liberation of São Tomé and Príncipe (MLSTP). [22]
Original republican constitution
Approved November 5, 1975, following independence. [6]
Multiparty constitutional reforms
Constitutional changes in 1990 opened the political system to opposition parties and competitive elections. [6] [22]
First multiparty national elections
Held in 1991 after the 1990 political reforms. [22]
2003 constitutional revision
Constitutional Law No. 1/2003 revised the democratic constitutional framework. [6] [7]
Modern state form
Sovereign, multiparty, semi-presidential democratic republic. [6]
National Independence Day
July 12; public commemoration of independence in 1975.
National currency name
Dobra, ISO 4217 currency code STN following the 2018 redenomination. [2] [5]
International dialing code
+239.
Country ISO codes
ST (alpha-2), STP (alpha-3), 678 (numeric).
Country-code top-level domain
.st.
Time zone
Greenwich Mean Time / UTC+0 year-round; no routinely observed daylight-saving time.
Location of national population
Population is concentrated on São Tomé Island; Príncipe has an autonomous administrative region. [4]

Geography and Population

Geographic location
Gulf of Guinea in the equatorial eastern Atlantic, offshore from west-central Africa. [5]
Principal islands
São Tomé and Príncipe, with a number of smaller inhabited and uninhabited islets. [5]
Archipelago status
Island sovereign state with no land borders.
Nearest continental coast
West-central Africa, with Gabon and Equatorial Guinea across the Gulf of Guinea.
National area—domestic source
1,001 km² in the national government and INE geographic reference. [5] [3]
United Nations area series
964 km² in the UN Statistics Division country profile; differing published geographic reference figures are kept separately attributed. [2]
Island São Tomé—reported area
Approximately 854 km² in UN country-level reporting cited in the 2024 national materials. [5]
Island Príncipe—reported area
Approximately 142 km² in official 2024 census material and government summaries. [5] [4]
Ocean
Atlantic Ocean.
Terrain
Steep volcanic mountains, densely vegetated slopes, coastal lowlands and deeply incised valleys. [20] [21]
Highest point
Pico de São Tomé, about 2,024 metres above sea level.
Distinctive landform
Pico Cão Grande, a prominent volcanic plug on São Tomé Island.
Volcanic origin
Islands formed along the Cameroon volcanic line in the Gulf of Guinea. [21]
Climate
Humid tropical maritime climate, varying with rainfall, elevation and exposure to trade winds. [5] [20]
Seasonality
Rainier and relatively drier periods; local exposure and elevation change rainfall patterns.
Forest ecosystems
Lowland and montane tropical rainforests with high numbers of endemic species. [20] [21]
Marine ecosystems
Coastal fisheries, beaches, nearshore habitats, turtles and seabirds. [20] [21]
2025 population—World Bank
240,254, a modeled international statistical estimate for 2025. [1]
2024 population—national census
209,607 residents in the national 2024 census reported as provisional; not interchangeable with the 2025 World Bank series. [3] [4]
2024 census fieldwork
November 15 to December 15, 2024; reference-night based household enumeration. [4]
2024 census women
109,787, approximately 52.4% of the provisional resident count. [3] [4]
2024 census men
99,820, approximately 47.6% of the provisional resident count. [3] [4]
2024 census—São Tomé Island
199,777 residents, as shown by national government data. [5]
2024 census—Príncipe
9,830 residents, approximately 4.7% of national census population. [5] [4]
2024 census—Água Grande district
80,647 residents; includes the capital São Tomé. [4]
2024 census—Mé-Zóchi district
50,697 residents in the national census tables. [4]
2024 census—Lobata district
23,086 residents in the national census tables. [4]
2024 census—Cantagalo district
20,794 residents in the national census tables. [4]
2024 census—Lembá district
17,129 residents in the national census tables. [4]
2024 census—Caué district
7,424 residents in the national census tables. [4]
2024 census—Príncipe region
9,830 residents in the national census tables. [4]
Population growth—2025
2.0% annually in the World Bank country series. [1]
Life expectancy—2024
About 70 years at birth, World Bank data. [1]
Endemism
Island isolation supports distinctive endemic trees, birds, amphibians and other wildlife. [20] [21]
Conservation challenge
Deforestation pressures, fisheries management, erosion, coastal vulnerability and climate-related extreme rainfall. [20]
Biosphere reserve coverage
São Tomé received a UNESCO biosphere-reserve designation in 2025, complementing Príncipe’s 2012 reserve; UNESCO describes these as covering the entire sovereign country. [19] [20] [21]
First World Heritage listing
The Roças of São Tomé and Príncipe, a six-site cultural serial inscription added in 2026. [17] [18]

Population methodology: The national 2024 census figure is a reported count, while the World Bank 2025 population is a separate modeled estimate. The two should not be interpreted as evidence of a one-year increase of exactly the difference between those figures. [4] [1]

Economy and International Trade

Economic structure
Small island economy based on services, agriculture, trade, tourism, fishing and public activity. [1] [5]
Nominal GDP—2025
US$981.29 million, World Bank current-dollar series. [1]
GDP per capita—2025
US$4,084.4, World Bank current-dollar series. [1]
Real GDP growth—2025
1.0%, World Bank annual series. [1]
Inflation—2025
11.0%, annual consumer-price change in the World Bank series. [1]
Modeled unemployment—2025
9.1% of the labor force, World Bank / ILO modeled estimate; not the same measure as older national labor surveys. [1]
International GDP-series distinction
The United Nations pocketbook and UNCTAD may publish different GDP values due to publication vintage and national-accounts revisions; these are not alternative currencies. [2] [1] [15]
Currency
São Tomé and Príncipe dobra (STN). [5] [2]
Currency redenomination
STN replaced the former dobra code STD in 2018, with 1 new dobra equal to 1,000 old dobras.
Exchange-rate arrangement
Currency officially pegged to the euro at 24.5 STN per EUR. [5]
Central bank
Banco Central de São Tomé e Príncipe (BCSTP).
Principal cash crops
Cocoa and coffee, with palm and coconut-derived products also important. [5] [14]
Cocoa economy
Cocoa beans and processed cocoa supply a major share of merchandise-export earnings. [14]
Palm oil trade
Crude palm oil was a major recorded product in the WTO 2023 merchandise-export breakdown. [14]
Fisheries
Artisanal and commercial fishing contribute to livelihoods and food supply. [20]
Tourism
Nature-based, heritage, beach and ecotourism centered on the islands’ landscapes and coastal environment. [20] [21]
Oil sector status
Offshore hydrocarbon exploration has been pursued, but the country is not a substantial established crude-oil exporter as of this edition.
Energy supply
Diesel-fired generation and renewable-energy development are important to electricity planning.
Infrastructure constraints
Island shipping logistics, costly fuel imports and power reliability affect private-sector development. [23] [1]
Principal import necessities
Rice and other foodstuffs, petroleum products, power-generation equipment, vehicles and construction materials. [14]
2023 WTO/UN Comtrade merchandise exports
US$16.6 million for goods exports in the WTO profile. [14]
2023 WTO/UN Comtrade merchandise imports
US$183.6 million for goods imports in the same 2023 series. [14]
2023 WTO merchandise-trade balance
Approximately –US$167.0 million (exports minus imports, rounded WTO totals). [14]
2023 cocoa-bean exports
US$10.1 million, 60.7% of WTO-reported merchandise exports. [14]
2023 crude palm-oil exports
US$5.5 million, 33.1% of WTO-reported merchandise exports. [14]
2023 European Union export share
96.2% of WTO-reported merchandise export destinations. [14]
2023 major import partner—EU
40.7% of WTO-reported imports. [14]
2023 import partner—Togo
15.6% of WTO-reported imports. [14]
2023 import partner—Angola
13.7% of WTO-reported imports. [14]
2023 major import product
Milled or semi-milled rice: US$15.0 million (8.2% of all WTO-reported imports). [14]
2024 UNCTAD goods exports
US$29 million in UNCTAD’s general-country-profile series; a different year and reporting dataset from the WTO’s 2023 profile. [15]
2024 UNCTAD goods imports
US$153 million in UNCTAD’s 2024 country-profile series. [15]
2024 UNCTAD merchandise trade deficit
Approximately US$124 million, based on UNCTAD 2024 exports and imports. [15]
2024 UNCTAD services exports
Approximately US$109 million, estimated series; not merchandise exports. [15]
2024 UNCTAD services imports
Approximately US$65 million, estimated series; not merchandise imports. [15]
Tourism and services importance
Travel services play a major role in reported services export earnings, and may exceed goods exports in value. [15]
Development priorities
Reliable electricity, access to markets, agricultural productivity, jobs, tourism resilience and climate adaptation. [1] [23]
Trade-data interpretation
Do not combine the WTO’s 2023 goods numbers with UNCTAD’s 2024 services or goods indicators to derive a single-year trade balance. [14] [15]

Selected merchandise exports, 2023 (WTO / UN Comtrade)

Based on WTO-reported merchandise exports totaling US$16.6 million in 2023. Percentages are rounded. [14]

Goods categoryRecorded valueShare of 2023 exports
Cocoa beansUS$10.1m60.7%
Crude palm oilUS$5.5m33.1%
Unspecified productsUS$0.2m1.1%
Dried peppers / CapsicumUS$0.1m0.7%
Chocolate preparations, selected categoryUS$0.1m0.7%
Other merchandise headingsRemainderApproximately 3.7%

Merchandise imports by origin, 2023 (WTO / UN Comtrade)

Based on WTO-reported imports totaling US$183.6 million in 2023. The European Union is shown as a reported partner grouping. [14]

OriginRecorded valueShare of 2023 imports
European UnionUS$74.7m40.7%
TogoUS$28.7m15.6%
AngolaUS$25.2m13.7%
JapanUS$10.2m5.6%
TürkiyeUS$9.6m5.2%
Other sourcesRemainderApproximately 19.2%

Reporting-year control: The tables directly below reproduce 2023 WTO/UN Comtrade values. UNCTAD publishes separate 2024 figures (US$29m in merchandise exports and US$153m in merchandise imports); these belong to another reported series. [14] [15]

People and Society

Official language
Portuguese, used in public administration, schools and formal media. [6] [16]
Common home and community languages
Forro, Angolar and Lung’ie (Principense), Portuguese-lexifier creole languages with distinct histories.
Forro language
A Portuguese-based creole especially associated with São Tomé Island.
Angolar language
A Portuguese-based creole associated particularly with communities of the island of São Tomé.
Lung’ie language
A Portuguese-based creole associated with Príncipe Island.
Other spoken languages
Cabo Verdean Creole and immigrant languages, alongside some French and English.
Official-language distinction
Regional creoles are culturally important but Portuguese is the constitutionally official language. [6]
Language survey caveat
Language proficiency statistics frequently derive from 2012-era material and are not a 2025 language census. [16]
Population background
Society developed from African, European and creole communities linked to Atlantic plantation migration and trade. [22]
Major historical communities
Forros, Angolares, descendants of contracted laborers and mixed-heritage families; categories carry distinct local histories. [22]
Principal religion
Christianity, with Roman Catholicism historically the largest single denomination. [16]
Catholic identification—2012 census
55.7% in the religious breakdown reproduced by the U.S. State Department; it is a 2012, not 2025, census percentage. [16]
Seventh-day Adventists—2012
4.1% according to the cited 2012 distribution. [16]
Assemblies of God—2012
3.4% according to the cited 2012 distribution. [16]
New Apostolic Church—2012
2.9% according to the cited 2012 distribution. [16]
Other Christian communities
Methodist, evangelical, Pentecostal and other denominations and churches. [16]
Islam
A small Muslim minority; 2012 and church-affiliated estimates are not directly comparable with recent household counts. [16]
No religious affiliation—2012
21.2% recorded in the commonly cited 2012 breakdown. [16]
2024 census religion reporting
The new national census report publishes counts by denomination, including many unknown or unclassified responses; no single 2012 percentage should be treated as the 2024 share. [4]
Religious freedom
The constitution provides for freedom of religion and conscience. [6] [16]
Education language
Portuguese is the principal language of formal instruction.
Education policy priorities
School access, teacher capacity, learning outcomes and secondary education opportunities.
National cultural traditions
Tchiloli performance, dança-congo, musical and dramatic traditions, festivals and local storytelling.
Food culture
Fish, plantains, breadfruit, cassava, bananas, cocoa products and palm-derived ingredients.
Celebrated cultural heritage
Historic roças preserve built landscapes and memories of plantation agriculture and labor migration. [18]
National heritage listing—2026
The Roças of São Tomé and Príncipe became the country’s first UNESCO World Heritage property in 2026. [17]
Roças component sites
Monte Café, Água Izé, Diogo Vaz, São João, Sundy and Belo Monte. [18]
Natural heritage
Endemic flora and fauna, oceanic birds, turtles and volcanic forests protected through conservation programs. [20] [21]
Health-system priorities
Primary healthcare, child and maternal health, communicable-disease prevention and reliable health infrastructure.
Sport
Football (soccer) is among the most widely followed sports.

Religion-year caution: The percentages above are explicitly from the 2012 religious composition series. The 2024 INE census report provides newer counts, but a large unclassified/undetermined category makes unqualified percentage comparisons misleading. [16] [4]

Government and Institutions

Government type
Semi-presidential, multiparty democratic republic with president, prime minister and National Assembly. [6] [10]
Constitutional basis
1975 constitution with major multiparty reforms in 1990 and a significant 2003 revision. [6] [7]
Head of state—November 2026
President Carlos Manuel Vila Nova. [8] [9]
Presidential election—2026
Carlos Vila Nova won reelection on July 19, 2026. [8]
Second presidential term
Inaugurated in September 2026 after the July presidential vote. [8]
President’s constitutional functions
Head of state with constitutional powers including the appointment of a prime minister following consultation with parliamentary parties. [6]
Head of government—latest confirmed
Américo d’Oliveira dos Ramos, prime minister since January 2025; official government-formation updates after September 2026 should be checked before publication revisions. [9] [12]
Post-September 2026 status
Parliamentary negotiations followed the September 27 election; the election result alone does not appoint a successor prime minister. [11] [12]
Executive leadership caution
As of the November 5, 2026 reference cutoff, the retrieved sources confirm the incumbent prime minister and ongoing coalition talks but not a later completed replacement appointment. [9] [11] [12]
Legislature
Unicameral Assembleia Nacional (National Assembly). [10] [6]
National Assembly size
55 elected seats. [10]
Parliamentary election date
September 27, 2026; final seat distribution confirmed on October 6. [10] [11]
2026 MLSTP seats
24 seats, largest parliamentary party but below the 28-seat absolute majority. [11]
2026 ADI seats
23 seats. [11]
2026 MCI-PS/PUN seats
6 seats. [11]
2026 BASTA seats
2 seats. [11]
2026 women elected to parliament
17 of 55 members (30.9%), as reported by the IPU from the National Assembly. [10]
2026 post-election alliance
ADI and MCI-PS/PUN announced a parliamentary-support agreement totaling 29 seats; an agreement is not itself a prime-ministerial decree. [13] [12]
President–prime minister relationship
President appoints prime minister after consultations and considering parliamentary elections; prime minister directs governmental policy. [6]
Cabinet
Prime minister, ministers and secretaries of state as provided in the constitution. [6]
Judiciary
Courts including a Supreme Court and constitutionally recognized judicial authorities. [6] [7]
Legal system
Civil-law tradition shaped by Portuguese law and post-independence legislation. [23]
Territorial administration
Six districts on São Tomé Island and the Autonomous Region of Príncipe. [4] [6]
Districts on São Tomé
Água Grande, Cantagalo, Caué, Lembá, Lobata and Mé-Zóchi. [4]
Príncipe regional status
Self-governing autonomous region with regional institutions. [6]
Local government
District and regional administrations operate under the national constitutional order. [6]
Political system since 1991
Competitive party elections and peaceful transfers of governing authority have followed the 1990 constitutional reforms. [22]
2026 electoral participation
The September 2026 election was marked by low turnout in available final electoral reporting; use an official election-specific total when quoting exact percentages. [11]
Political-reference cutoff
The current government facts on this page are verified through November 5, 2026; transition appointments should be reviewed when formal decrees are published. [12]

2026 government formation: The 2026 parliamentary election does not, by itself, identify an installed prime minister. The name listed here reflects the latest head-of-government confirmation available at the date of this profile; subsequent appointment decrees should trigger an update. [9] [12] [11]

International Profile

UN membership
Admitted September 16, 1975. [2]
African Union
Member of the African Union and the African multilateral institutional system.
Community of Portuguese Language Countries
Member of the CPLP, reflecting its Portuguese-language connections. [23] [8]
Economic Community of Central African States
Member of ECCAS (CEEAC), the central African regional organization.
African Continental Free Trade Area
Signed AfCFTA in 2018 and ratified in 2019, according to the U.S. Department of State investment profile. [23]
WTO status—2026
Observer government, not a full WTO member; WTO trade statistics cover nonmembers as well. [14] [23]
Official diplomatic language
Portuguese is the primary language of national administration and many treaty records. [6]
Important bilateral ties
Portugal and other Lusophone partners; neighboring Gulf of Guinea states and development partners.
Primary trade links
European Union in the 2023 WTO export series; European Union, Togo and Angola among leading import sources. [14]
Small-island development context
An island developing state with exposure to trade, energy, climate and infrastructure constraints. [23] [1]
UNESCO World Heritage Convention
Ratified July 25, 2006. [17]
World Heritage inscriptions—2026
One inscribed property as of November 2026: The Roças of São Tomé and Príncipe. [17] [18]
World Heritage first inscription date
The Roças cultural plantation series was added to the World Heritage List in 2026. [17]
Historic roças context
Six sites represent colonial coffee and cocoa plantation systems and the history of coerced labor and migration. [18]
UNESCO biosphere milestone
São Tomé and Príncipe became the first country whose whole sovereign territory received UNESCO biosphere-reserve recognition in 2025. [19]
UNESCO Príncipe biosphere reserve
Designated in 2012. [21]
UNESCO São Tomé biosphere reserve
Designated in 2025. [20]
Ocean diplomacy
Atlantic marine biodiversity, fisheries and coastal climate resilience are important regional concerns. [20]
Environment and culture connection
Biosphere-reserve recognition and the Roças World Heritage inscription cover distinct conservation and cultural heritage regimes. [17] [19]
Development cooperation
External development finance and technical assistance support social infrastructure and economic projects. [1] [23]

Sources and Methodology

These entries distinguish census counts from population estimates, nominal GDP from GDP per capita or real growth, and merchandise trade from services trade. The year attached to a statistic is its measurement year, not the page’s publication or update date. Government appointments are time-sensitive and reflect the evidence available through November 5, 2026.

Source-vintage note: INE's 2024 census results are labeled provisional in the available national report; the World Bank 2025 indicators and UN 2025 pocketbook may use revisions and methodologies not identical to the national data. This page preserves those differences instead of combining incompatible series.

  1. [1] World Bank, São Tomé and Príncipe country data. World Development Indicators: 2025 population, GDP, GDP per capita, growth, inflation and unemployment; 2024 life expectancy.
  2. [2] United Nations Statistics Division, country profile (UNdata / 2025 pocketbook). UN Middle Africa classification, country area series, currency, UN admission, and capital; UN GDP series differs from the World Bank vintage.
  3. [3] Instituto Nacional de Estatística (INE), national statistics portal. National area of 1,001 km² and the displayed provisional 2024 census population and sex distribution.
  4. [4] INE, report on results of the 2024 Fifth General Population and Housing Census (July 2025). 2024 census carried out November–December 2024; provisional 209,607 residents, 2024 district counts, religion and demographic tables.
  5. [5] Government of São Tomé and Príncipe, About the Country. National territory 1,001 km², 2024 national demographic information, national currency and euro peg.
  6. [6] Constitution of São Tomé and Príncipe (1975, revised 2003), Constitute Project. Structure of executive, president, National Assembly, government, local autonomy, constitutional chronology and rights.
  7. [7] Library of Congress, Guide to Law Online: São Tomé and Príncipe. Constitutional law and official institutions; law 7/90 of September 1990 and 2003 constitutional framework.
  8. [8] Community of Portuguese Language Countries, President’s second inauguration (September 2026). Carlos Vila Nova reelected 19 July 2026 and inaugurated for another term in September 2026.
  9. [9] Australian Department of Foreign Affairs and Trade, São Tomé and Príncipe heads of government. Cross-check president Carlos Vila Nova and prime minister Américo Ramos; leadership may change after parliamentary elections.
  10. [10] Inter-Parliamentary Union, São Tomé and Príncipe legislative election, 27 September 2026. September 2026 election and composition of 55-seat National Assembly; 17 women elected.
  11. [11] Centro de Integridade Pública de STP, 2026 final legislative election seats and government formation. Constitutional Court confirmed 6 October 2026: MLSTP 24, ADI 23, MCI-PS/PUN 6, BASTA 2; no single-party majority.
  12. [12] STP-Press, presidential consultations over next government (13 October 2026). Post-election government formation and president’s consultation of parties; no unverified appointment assumed.
  13. [13] STP-Press, ADI–MCI/PUN parliamentary support agreement (8 October 2026). 29-seat parliamentary support agreement following the September 2026 vote; separate from appointment of government.
  14. [14] WTO Tariff & Trade Data, São Tomé and Príncipe economy profile. UN Comtrade goods exports US$16.6m and imports US$183.6m for 2023; product and destination shares; nonmember WTO status.
  15. [15] UNCTADstat, São Tomé and Príncipe General Profile, 2024 statistics. Separate 2024 merchandise exports US$29m and imports US$153m; services exports estimated US$109m, imports US$65m.
  16. [16] U.S. Department of State, 2023 Report on International Religious Freedom: São Tomé and Príncipe. Reported 2012 census religious percentages and later Catholic, Protestant and Muslim estimates; do not mislabel as a 2025 census.
  17. [17] UNESCO World Heritage Centre, São Tomé and Príncipe state-party page. First inscribed World Heritage cultural property in 2026 and its official listing.
  18. [18] UNESCO World Heritage Centre, The Roças of São Tomé and Príncipe (2026). Serial cultural property composed of six historic plantations, inscribed in 2026.
  19. [19] UNESCO, São Tomé and Príncipe’s whole-country Biosphere Reserve milestone (2025). Designation in September 2025 made the country the first entire sovereign state recognized as a UNESCO biosphere reserve.
  20. [20] UNESCO Man and the Biosphere, Ilha de São Tomé. 2025 São Tomé Island biosphere reserve and tropical biodiversity.
  21. [21] UNESCO Man and the Biosphere, Island of Príncipe. Príncipe Island biosphere reserve designated 2012.
  22. [22] U.S. State Department historical Background Notes: São Tomé and Príncipe. Portuguese colonial past, independence 12 July 1975, 1990 multiparty reforms and 1991 elections; older historical not contemporary figures.
  23. [23] U.S. Department of State, 2024 Investment Climate Statement: São Tomé and Príncipe. CPLP and AfCFTA participation, WTO observer not full member, business and infrastructure context.