Oyem Facts
| Area | 25.9 km² |
| Population | 86,329 |
| Male Population | 43,416 (50.3%) |
| Female Population | 42,913 (49.7%) |
| Population change (1975 to 2020) | +369.9% |
| Population change (2000 to 2020) | +84.7% |
| Median Age | 20.3 years (Male: 20.1, Female: 20.5) |
| GDP per capita (PPP) | $21,831 (2022) |
| Local Time | |
| Timezone | West Africa Time |
| Lat & Lng | 1.59950, 11.57933 |
Map of Oyem
Interactive Map
Oyem Population
Years 1975 to 2030
| Data | 1975 | 1990 | 2000 | 2015 | 2020 | 2025* | 2030* |
|---|---|---|---|---|---|---|---|
| Population | 18,371 | 33,454 | 46,737 | 69,558 | 86,329 | 94,929 | 100,810 |
| Population Density | 710 / km² | 1,292.9 / km² | 1,806.3 / km² | 2,688.2 / km² | 3,336.4 / km² | 3,668.8 / km² | 3,896 / km² |
* Projected
Sources: JRC (European Commission's Joint Research Centre) work on the GHS built-up gridOyem Population change from 2000 to 2020
Increase of 84.7% from year 2000 to 2020
| Location | Change since 1975 | Change since 1990 | Change since 2000 |
|---|---|---|---|
| Oyem | +369.9% | +158.1% | +84.7% |
| Woleu-Ntem Province | — | — | — |
| Gabon | — | — | — |
Sources: JRC (European Commission's Joint Research Centre) work on the GHS built-up grid
Oyem Median Age
Median Age: 20.3 years
| Location | Median Age | Median Age (Female) | Median Age (Male) |
|---|---|---|---|
| Oyem | 20.3 yrs | 20.5 yrs | 20.1 yrs |
| Woleu-Ntem Province | 20.3 yrs | 20.4 yrs | 20.1 yrs |
| Gabon | 20.3 yrs | 20.5 yrs | 20.1 yrs |
Sources: CIESIN (Center for International Earth Science Information Network)
Oyem Population Density
Population Density: 3,336 / km²
| Location | Population | Area | Density |
|---|---|---|---|
| Oyem | 86,329 | 25.9 km² | 3,336 / km² |
| Woleu-Ntem Province | 175,183 | 37,949 km² | 4.6 / km² |
| Gabon | 1.7 million | 262,868.7 km² | 6.4 / km² |
Sources: JRC (European Commission's Joint Research Centre) work on the GHS built-up grid
Oyem Historical and Projected Population
Estimated Population from 1810 to 2100
Sources:
- JRC (European Commission's Joint Research Centre) work on the GHS built-up grid
- CIESIN (Center for International Earth Science Information Network)
- [Link] Klein Goldewijk, K., Beusen, A., Doelman, J., and Stehfest, E.: Anthropogenic land use estimates for the Holocene – HYDE 3.2, Earth Syst. Sci. Data, 9, 927–953, https://doi.org/10.5194/essd-9-927-2017, 2017.
Human Development Index (HDI)
Statistic composite index of life expectancy, education, and per capita income.
Source: [Link] Kummu, M., Taka, M. &Guillaume, J. Gridded global datasets for Gross Domestic Product and Human Development Index over 1990–2015. Sci Data 5, 180004 (2018) doi:10.1038/sdata.2018.4
Oyem Gross Domestic Product (GDP)
GDP per capita, PPP (constant 2017 international $)
| Data | 1990 | 1995 | 2000 | 2005 | 2010 | 2015 | 2020 | 2022 |
|---|---|---|---|---|---|---|---|---|
| GDP per capita | $19,789 | $22,114 | $21,418 | $16,520 | $17,562 | $22,081 | $18,748 | $21,831 |
| Total GDP | $306.9M | $393.5M | $446.6M | $401.2M | $507M | $762M | $665.8M | $807.5M |
Source: [Link] Kummu, M., Kosonen, M. & Masoumzadeh Sayyar, S. Downscaled gridded global dataset for gross domestic product (GDP) per capita PPP over 1990–2022. Sci Data 12, 178 (2025) doi:10.1038/s41597-025-04487-x
Oyem CO2 Emissions
Carbon Dioxide (CO2) Emissions Per Capita in Tonnes Per Year
| Location | CO2 Emissions | CO2 Emissions Per Capita | CO2 Emissions Intensity |
|---|---|---|---|
| Oyem | 173,070 tn | 2 tn | 6,688.7 tons/km² |
| Woleu-Ntem Province | 343,515 tn | 1.96 tn | 9.1 tons/km² |
| Gabon | 3,287,773 tn | 1.95 tn | 12.5 tons/km² |
Sources: [Link] Moran, D., Kanemoto K; Jiborn, M., Wood, R., Többen, J., and Seto, K.C. (2018) Carbon footprints of 13,000 cities. Environmental Research Letters DOI: 10.1088/1748-9326/aac72a
Oyem CO2 Emissions
| 2013 CO2 emissions (tonnes/year) | 173,070 tn |
| 2013 CO2 emissions (tonnes/year) per capita | 2 tn |
| 2013 CO2 emissions intensity (tonnes/km²/year) | 6,688.7 tons/km² |
Natural Hazards Risk
Relative risk out of 10
| Hazard | Risk Level |
|---|---|
| Earthquake | Low (2) |
* Risk, particularly concerning flood or landslide, may not be for the entire area.
Sources:
- Dilley, M., R.S. Chen, U. Deichmann, A.L. Lerner-Lam, M. Arnold, J. Agwe, P. Buys, O. Kjekstad, B. Lyon, and G. Yetman. 2005. Natural Disaster Hotspots: A Global Risk Analysis. Washington, D.C.: World Bank. https://doi.org/10.1596/0-8213-5930-4.
- Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University. 2005. Global Earthquake Hazard Distribution - Peak Ground Acceleration. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/H4BZ63ZS.
Oyem
Oyem is the capital of Woleu-Ntem province in northern Gabon, lying on the N2 road and the River Ntem.
Oyem Wikipedia Page
About Our Data
The data on this page is estimated using a number of publicly available tools and resources. It is provided without warranty, and could contain inaccuracies. Use at your own risk.