Population
231k persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.
Sao Tome and Principe
All indicators of the Macroscope base for Sao Tome and Principe, with sources. Below: what past UN and IMF releases projected and what actually happened.
What the data shows
Computed with the same code as the observations under the main chart and in the API (get_insights). Moving together in time does not prove a cause.
How the indicators changed
- Fertility (TFR): 6.23 in 1950 → 3.64 in 2023 (−41%). Peak: 6.53 in 1974; the latest value is 44% lower. The trend broke around 1977 and 2013: +0.01 → −0.06 → −0.1 a year.
- Births: 2.78k in 1950 → 6.51k in 2023 (+134%). Low: 2.64k in 1953; +146% since then. The trend broke around 1968 and 2011: +0.01k → +0.09k → −0.05k a year.
- Population: 60.9k in 1950 → 231k in 2023 (×3.8). The trend broke around 1971: change sped up (+0.8k → +2.36k a year).
- Internet: 0% in 1990 → 59.1% in 2024 (+59 pp). Thresholds: above 10% since 2003, above 50% since 2020. Fastest growth in 2016–2021: 28% → 54.9%.
- Urban share: 15.4% in 1960 → 69.2% in 2025 (+54 pp). Threshold: above 50% since 1997. The trend broke around 2010: change slowed down (+1.4 → +0.17 a year).
- GDP per person (PPP): 3,883 PPP dollars in 1990 → 5,459 PPP dollars in 2025 (+41%). The trend broke around 1999 and 2019: −3.8 → +97 → −41 a year.
- GDP growth: on average −1.3% in the 1980s, 1.3% in the 1990s, 4.7% in the 2000s, 3.4% in the 2010s, 1.2% in the 2020s. Lowest: −10.3% in 1981; highest: 9.3% in 1985.
- Inflation: on average 14.8% in the 1980s, 40.0% in the 1990s, 16.1% in the 2000s, 8.6% in the 2010s, 12.1% in the 2020s. Lowest: 0.1% in 1985; highest: 69% in 1997.
What changed at the same time
- The fastest decline of "Fertility (TFR)" was in 2012–2022: 4.66 → 3.70. Over the same years: births 6.89k → 6.4k; population 189k → 226k; internet 21.6% → 58.6%; urban share 67% → 68.4%; GDP per person (PPP) 4,920 PPP dollars → 5,632 PPP dollars; GDP growth 2.9% → 0.2%; inflation 10.6% → 18.1%.
How the indicators relate
- Fertility (TFR) and internet (1990–2023, 27 years): levels are strongly related, in opposite directions (r = −0.97); year-to-year changes show no reliable link (r = −0.22). This looks like a shared trend: both change over time, but not in step from year to year.
- Fertility (TFR) and urban share (1960–2023, 64 years): levels are strongly related, in opposite directions (r = −0.93); year-to-year changes show no reliable link (r = 0.27). This looks like a shared trend: both change over time, but not in step from year to year.
- Fertility (TFR) and GDP per person (PPP) (1990–2023, 34 years): levels are strongly related, in opposite directions (r = −0.95); year-to-year changes show no reliable link (r = 0.03). This looks like a shared trend: both change over time, but not in step from year to year.
Forecasts vs actual
- Fertility (TFR): past UN projections. The outcome was below the projection in 3 of 9 revisions (2002–2022) and above in 6; median gap +27%.
- The UN 2002 projection expected this level (3.64) already around 2006: reality is 17 years behind it.
- The UN 2022 projection expected today's level (3.64, 2023) only around 2024: reality is 1 year ahead of it.
- Fertility (TFR): UN 2024 projection (medium): 2050 — 2.59 (−29% vs 2023), 2100 — 1.97 (−46% vs 2023); low variant for 2100: 1.47.
- Births: past UN projections. The outcome was below the projection in 3 of 9 revisions (2002–2022) and above in 6; median gap +18%.
- The UN 2022 projection expected today's level (6.51k, 2023) only around 2024: reality is 1 year ahead of it.
- Births: UN 2024 projection (medium): 2050 — 7.53k (+16% vs 2023), 2100 — 6.8k (+5% vs 2023); low variant for 2100: 3.03k.
- Population: past UN projections. The outcome was below the projection in 5 of 12 revisions (1998–2022) and above in 7; median gap +4.3%.
- The UN 1998 projection expected today's level (231k, 2023) only around 2030: reality is 7 years ahead of it.
- The UN 2022 projection expected this level (231k) already around 2022: reality is 1 year behind it.
- Population: UN 2024 projection (medium): 2050 — 365k (+58% vs 2023), 2100 — 534k (+131% vs 2023); low variant for 2100: 361k.
- GDP growth: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 2 pp below the forecast; below it in 94% of cases; typical error ±2.2 pp. The biggest miss was for 2022: IMF, April 2021 expected 5%, the outcome was 0.2%.
- GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 2.1%, 2027 — 3.9%, 2031 — 3.3%.
- Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 3.9 pp above the forecast; below it in 11% of cases; typical error ±5 pp. The biggest miss was for 2008: IMF, April 2007 expected 11.4%, the outcome was 32%.
- Inflation: latest IMF forecast (IMF, April 2026): 2026 — 9.6%, 2028 — 6%, 2031 — 5%.
UN projections vs actual
Solid line: actual data, UN WPP 2024 estimates to 2023, then national statistics where comparable with the UN. Dashed: medium variants of past UN revisions. The table shows what each revision expected for the latest year (or five-year period) with actual data.
Population
persons, 1 July
- Actual
- UN 1998
- UN 2000
- UN 2002
- UN 2004
- UN 2006
- UN 2008
- UN 2010
- UN 2012
- UN 2015
- UN 2017
- UN 2019
- UN 2022
- UN 2024, medium
| Release | Target period | Horizon | Expected | Actual | Actual vs expected |
|---|---|---|---|---|---|
| UN 1998 | 2023 | 25 years | 212k | 231k | +9% |
| UN 2000 | 2023 | 23 years | 202k | 231k | +14.4% |
| UN 2002 | 2023 | 21 years | 245k | 231k | −5.8% |
| UN 2004 | 2023 | 19 years | 219k | 231k | +5.6% |
| UN 2006 | 2023 | 17 years | 208k | 231k | +10.8% |
| UN 2008 | 2023 | 15 years | 208k | 231k | +10.8% |
| UN 2010 | 2023 | 13 years | 210k | 231k | +9.9% |
| UN 2012 | 2023 | 11 years | 242k | 231k | −4.5% |
| UN 2015 | 2023 | 8 years | 224k | 231k | +3.1% |
| UN 2017 | 2023 | 6 years | 232k | 231k | −0.6% |
| UN 2019 | 2023 | 4 years | 232k | 231k | −0.5% |
| UN 2022 | 2023 | 1 year | 232k | 231k | −0.4% |
Births
births per year
- Actual
- UN 2002
- UN 2004
- UN 2006
- UN 2008
- UN 2010
- UN 2012
- UN 2015
- UN 2017
- UN 2019
- UN 2022
- UN 2024, medium
| Release | Target period | Horizon | Expected | Actual | Actual vs expected |
|---|---|---|---|---|---|
| UN 2002 | 2015–2020 | 16 years | 5.37k | 6.34k | +18.2% |
| UN 2004 | 2015–2020 | 14 years | 5.05k | 6.34k | +25.5% |
| UN 2006 | 2015–2020 | 12 years | 5.09k | 6.34k | +24.7% |
| UN 2008 | 2015–2020 | 10 years | 5.09k | 6.34k | +24.7% |
| UN 2010 | 2015–2020 | 8 years | 5.27k | 6.34k | +20.3% |
| UN 2012 | 2015–2020 | 6 years | 6.57k | 6.34k | −3.4% |
| UN 2015 | 2015–2020 | 2 years | 6.45k | 6.34k | −1.7% |
| UN 2017 | 2015–2020 | 0 years | 6.84k | 6.34k | −7.3% |
| UN 2022 | 2023 | 1 year | 6.45k | 6.51k | +0.9% |
Total fertility rate
children per woman
- Actual
- UN 2002
- UN 2004
- UN 2006
- UN 2008
- UN 2010
- UN 2012
- UN 2015
- UN 2017
- UN 2019
- UN 2022
- UN 2024, medium
| Release | Target period | Horizon | Expected | Actual | Actual vs expected |
|---|---|---|---|---|---|
| UN 2002 | 2015–2020 | 16 years | 2.83 | 4.05 | +43% |
| UN 2004 | 2015–2020 | 14 years | 2.91 | 4.05 | +39.2% |
| UN 2006 | 2015–2020 | 12 years | 3.10 | 4.05 | +30.6% |
| UN 2008 | 2015–2020 | 10 years | 3.10 | 4.05 | +30.6% |
| UN 2010 | 2015–2020 | 8 years | 3.18 | 4.05 | +27.4% |
| UN 2012 | 2015–2020 | 6 years | 3.79 | 4.05 | +6.7% |
| UN 2015 | 2015–2020 | 2 years | 4.36 | 4.05 | −7.1% |
| UN 2017 | 2015–2020 | 0 years | 4.36 | 4.05 | −7.2% |
| UN 2022 | 2023 | 1 year | 3.68 | 3.64 | −1% |
IMF forecasts vs actual
Solid line: actual values from the latest IMF edition (data get revised, so we use the newest). Dashed: April editions, current year and five years ahead. The table covers next-year forecasts from all editions: mean error shows bias, mean absolute error shows accuracy.
Real GDP growth
% per year
- Actual (IMF)
- WEO, April editions
| Indicator | Forecasts | Mean error | Mean absolute error | Actual below forecast |
|---|---|---|---|---|
| Real GDP growth | 34 | −2 pp | 2.2 pp | 94% |
| Inflation | 36 | +3.9 pp | 5 pp | 11% |
| Unemployment rate | 13 | +0.7 pp | 0.9 pp | 23% |
| Government gross debt | 28 | +13.1 pp | 17.6 pp | 21% |
All indicators
Demography
Births
6.51k births per year latest value, 2023
Live births per calendar year. UN WPP 2024 and national statistics (64 countries, 2015-2025).
Total fertility rate
3.64 children per woman latest value, 2023
Average number of children a woman would have at the age-specific fertility rates of the year.
Life expectancy at birth, women
73.7 years latest value, 2023
Years a newborn girl would live at the mortality rates of the year (UN).
Life expectancy at birth, men
66.2 years latest value, 2023
Years a newborn boy would live at the mortality rates of the year (UN).
Median age
19.1 years latest value, 2023
Age that divides the population in two halves (UN).
Mean age of mothers at childbirth
28.5 years latest value, 2023
Mean age of mothers at the birth of their children of any order (UN).
Sex ratio at birth
102.7 boys per 100 girls latest value, 2023
Boys born per 100 girls born (UN).
Net migration
−0.59k persons per year latest value, 2023
Immigrants minus emigrants per year (UN estimate and projection).
Old-age dependency
8.5 persons 65+ per 100 aged 20-64 latest value, 2020
Persons aged 65+ per 100 aged 20-64, every five years (UN).
Digitalisation
Internet users
59.1 % of population latest value, 2024
Share of individuals who used the Internet in the last three months from any device. ITU data.
Mobile cellular subscriptions
62.4 per 100 people latest value, 2024
Active mobile cellular subscriptions per 100 people; can exceed 100 when people have several SIM cards. ITU data.
Fixed broadband subscriptions
3 subscriptions per 100 people latest value, 2024
Fixed subscriptions to high-speed Internet (256 kbit/s or more) per 100 people. ITU data.
Economy
GDP per capita, PPP
5,459 constant 2021 international $ latest value, 2025
Gross domestic product per person at purchasing power parity, constant 2021 international dollars (World Bank, ICP).
Real GDP growth
1.1 % per year latest value, 2024
Annual change of GDP at constant prices. Actual values and forecasts from IMF WEO editions.
Inflation
0.9 % per year, average latest value, 2025
Change of the annual average consumer price index (IMF WEO).
Government gross debt
55.7 % of GDP latest value, 2025
General government gross debt, percent of GDP (IMF WEO).
Unemployment rate
13.5 % of labour force latest value, 2017
Unemployed as a share of the labour force (IMF WEO; national definitions).
GDP per capita, US dollars
3,517 current US dollars latest value, 2024
GDP per person in current US dollars at market exchange rates (IMF WEO).
Society
Urban population
69.2 % of population latest value, 2025
Share of people living in urban areas as defined by national statistical offices (World Bank, from UN World Urbanization Prospects).
Tertiary enrolment, women
13 % gross latest value, 2015
Women enrolled in tertiary education as a share of women in the five-year age group after secondary school; can exceed 100 (UNESCO).
Women with upper secondary education
0.9 % of women 25+ latest value, 1981
Share of women aged 25+ who completed at least upper secondary education (UNESCO).
Life expectancy at birth
69.9 years latest value, 2024
Life expectancy at birth, both sexes (World Bank, from UN and national statistics).
Same region: Africa
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