The latest officially reported population of Costa Rica was 5,152,950 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Costa Rica's population is 5,186,356 people compared to 9,090,531 in Sierra Leone.
Population statistics:
- Sierra Leone's population is 1.75 times bigger than Costa Rica's.
- Costa Rica is ranked the 126th most populous country in the world, while Sierra Leone is the 100th.
- The countries together account for 0.17% of the world: 0.06% for Costa Rica vs 0.11% for Sierra Leone.
- For the last 10 years, Costa Rica has had an average growth rate of +0.71% per year vs +2.29% in Sierra Leone.
- Since 2006, the population of Costa Rica has increased from 4.32M people to 5.19M (20% growth), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).
Costa Rica vs Sierra Leone: population by year and forecast
| Year | Population | |
|---|---|---|
Costa Rica
|
Sierra Leone
|
|
| 2100 | 3,803,678 | 16,107,087 |
| 2099 | 3,841,913 | 16,121,940 |
| 2098 | 3,880,484 | 16,135,035 |
| 2097 | 3,919,475 | 16,149,905 |
| 2096 | 3,958,826 | 16,160,672 |
| 2095 | 3,998,552 | 16,169,304 |
| 2094 | 4,038,516 | 16,168,902 |
| 2093 | 4,078,807 | 16,173,609 |
| 2092 | 4,119,351 | 16,170,778 |
| 2091 | 4,160,111 | 16,163,901 |
| 2090 | 4,200,989 | 16,154,165 |
| 2089 | 4,241,888 | 16,142,526 |
| 2088 | 4,282,758 | 16,128,775 |
| 2087 | 4,323,650 | 16,112,585 |
| 2086 | 4,364,399 | 16,085,549 |
| 2085 | 4,404,935 | 16,064,212 |
| 2084 | 4,445,179 | 16,040,563 |
| 2083 | 4,485,048 | 16,006,923 |
| 2082 | 4,524,570 | 15,970,872 |
| 2081 | 4,563,658 | 15,930,880 |
| 2080 | 4,602,126 | 15,892,665 |
| 2079 | 4,640,060 | 15,850,728 |
| 2078 | 4,677,313 | 15,801,450 |
| 2077 | 4,713,901 | 15,750,408 |
| 2076 | 4,749,678 | 15,695,310 |
| 2075 | 4,784,723 | 15,635,345 |
| 2074 | 4,819,050 | 15,580,279 |
| 2073 | 4,852,492 | 15,512,655 |
| 2072 | 4,885,078 | 15,442,481 |
| 2071 | 4,916,792 | 15,370,747 |
| 2070 | 4,947,655 | 15,293,426 |
| 2069 | 4,977,764 | 15,212,664 |
| 2068 | 5,006,939 | 15,124,069 |
| 2067 | 5,035,207 | 15,028,190 |
| 2066 | 5,062,849 | 14,931,295 |
| 2065 | 5,089,797 | 14,833,794 |
| 2064 | 5,115,866 | 14,736,872 |
| 2063 | 5,141,239 | 14,638,180 |
| 2062 | 5,165,574 | 14,525,736 |
| 2061 | 5,189,146 | 14,420,068 |
| 2060 | 5,211,857 | 14,307,451 |
| 2059 | 5,233,370 | 14,194,972 |
| 2058 | 5,253,830 | 14,077,124 |
| 2057 | 5,273,143 | 13,957,197 |
| 2056 | 5,291,310 | 13,832,494 |
| 2055 | 5,308,124 | 13,702,508 |
| 2054 | 5,323,598 | 13,576,231 |
| 2053 | 5,337,707 | 13,440,929 |
| 2052 | 5,350,263 | 13,299,910 |
| 2051 | 5,361,152 | 13,152,910 |
| 2050 | 5,370,484 | 13,006,688 |
| 2049 | 5,378,189 | 12,863,637 |
| 2048 | 5,384,366 | 12,712,671 |
| 2047 | 5,388,962 | 12,566,944 |
| 2046 | 5,391,996 | 12,411,042 |
| 2045 | 5,393,493 | 12,254,651 |
| 2044 | 5,393,407 | 12,088,895 |
| 2043 | 5,391,873 | 11,928,393 |
| 2042 | 5,388,912 | 11,767,372 |
| 2041 | 5,384,386 | 11,599,942 |
| 2040 | 5,378,629 | 11,428,331 |
| 2039 | 5,371,473 | 11,259,845 |
| 2038 | 5,362,904 | 11,097,180 |
| 2037 | 5,353,217 | 10,928,754 |
| 2036 | 5,342,317 | 10,757,928 |
| 2035 | 5,330,286 | 10,582,918 |
| 2034 | 5,317,189 | 10,411,088 |
| 2033 | 5,302,930 | 10,238,503 |
| 2032 | 5,287,714 | 10,059,929 |
| 2031 | 5,271,514 | 9,881,109 |
| 2030 | 5,254,366 | 9,705,485 |
| 2029 | 5,236,206 | 9,529,493 |
| 2028 | 5,217,031 | 9,358,412 |
| 2027 | 5,196,723 | 9,177,288 |
| 2026 | 5,175,408 | 8,998,902 |
| 2025 | 5,152,950 | 8,819,794 |
| 2024 | 5,129,910 | 8,642,022 |
| 2023 | 5,105,525 | 8,460,512 |
| 2022 | 5,081,765 | 8,276,807 |
| 2021 | 5,059,988 | 8,094,602 |
| 2020 | 5,034,320 | 7,912,558 |
| 2019 | 4,999,553 | 7,731,991 |
| 2018 | 4,957,818 | 7,554,563 |
| 2017 | 4,913,177 | 7,379,299 |
| 2016 | 4,866,998 | 7,205,328 |
| 2015 | 4,818,038 | 7,037,655 |
| 2014 | 4,767,119 | 6,876,385 |
| 2013 | 4,716,147 | 6,714,051 |
| 2012 | 4,663,934 | 6,551,080 |
| 2011 | 4,609,833 | 6,387,251 |
| 2010 | 4,555,962 | 6,222,714 |
| 2009 | 4,499,791 | 6,055,646 |
| 2008 | 4,440,056 | 5,894,722 |
| 2007 | 4,380,248 | 5,749,352 |
| 2006 | 4,321,340 | 5,624,466 |
| 2005 | 4,261,240 | 5,501,712 |
| 2004 | 4,200,078 | 5,355,717 |
| 2003 | 4,138,784 | 5,177,687 |
| 2002 | 4,075,705 | 4,971,435 |
| 2001 | 4,008,947 | 4,692,716 |
| 2000 | 3,937,739 | 4,423,611 |
| 1999 | 3,862,101 | 4,318,043 |
| 1998 | 3,782,838 | 4,295,785 |
| 1997 | 3,701,711 | 4,253,716 |
| 1996 | 3,619,013 | 4,199,210 |
| 1995 | 3,535,176 | 4,179,179 |
| 1994 | 3,451,122 | 4,173,105 |
| 1993 | 3,367,434 | 4,157,130 |
| 1992 | 3,284,258 | 4,166,366 |
| 1991 | 3,202,176 | 4,246,267 |
| 1990 | 3,121,706 | 4,196,828 |
| 1989 | 3,043,827 | 4,034,037 |
| 1988 | 2,968,103 | 3,934,517 |
| 1987 | 2,892,699 | 3,829,718 |
| 1986 | 2,817,216 | 3,728,380 |
| 1985 | 2,741,894 | 3,638,438 |
| 1984 | 2,667,595 | 3,558,758 |
| 1983 | 2,595,153 | 3,481,646 |
| 1982 | 2,524,806 | 3,408,183 |
| 1981 | 2,456,637 | 3,338,940 |
| 1980 | 2,390,633 | 3,272,089 |
| 1979 | 2,326,490 | 3,207,499 |
| 1978 | 2,264,510 | 3,145,517 |
| 1977 | 2,205,025 | 3,085,354 |
| 1976 | 2,147,774 | 3,028,820 |
| 1975 | 2,092,719 | 2,974,657 |
| 1974 | 2,039,643 | 2,920,459 |
| 1973 | 1,988,343 | 2,866,955 |
| 1972 | 1,938,248 | 2,814,388 |
| 1971 | 1,888,539 | 2,763,222 |
| 1970 | 1,838,949 | 2,712,286 |
| 1969 | 1,789,276 | 2,661,365 |
| 1968 | 1,739,731 | 2,611,532 |
| 1967 | 1,689,523 | 2,562,384 |
| 1966 | 1,638,116 | 2,514,638 |
| 1965 | 1,586,208 | 2,468,666 |
| 1964 | 1,533,960 | 2,424,390 |
| 1963 | 1,481,604 | 2,382,258 |
| 1962 | 1,429,445 | 2,342,242 |
| 1961 | 1,377,920 | 2,304,227 |
| 1960 | 1,327,496 | 2,268,356 |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/costa-rica/sierra-leone | CC BY 
From 2006 to 2016, the population of Costa Rica increased by 545,658 people (a 12.6% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).
For the next 10 years, from 2016 to 2026, Costa Rica gained 319,358 people (a 6.56% growth), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).
Costa Rica was ranked 119th most populous country in 2006 and is 126th in 2026. Sierra Leone was ranked 105th in 2006 and ranked 100th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Costa Rica's population will grow by 3.55% to 5,370,484 people with a rank change from 126th to 127th. The population of Sierra Leone will increase by 43.1% to 13,006,688 people and rank change from 100th to 91st.
Costa Rica is projected to reach its peak in 2045 at 5.39M people compared to the peak of 16.2M people in 2093 for Sierra Leone.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Costa Rica
|
Sierra Leone
|
|
| 2100 | -1% | -0.09% |
| 2099 | -0.99% | -0.08% |
| 2098 | -0.99% | -0.09% |
| 2097 | -0.99% | -0.07% |
| 2096 | -0.99% | -0.05% |
| 2095 | -0.99% | 0.002% |
| 2094 | -0.99% | -0.03% |
| 2093 | -0.98% | 0.02% |
| 2092 | -0.98% | 0.04% |
| 2091 | -0.97% | 0.06% |
| 2090 | -0.96% | 0.07% |
| 2089 | -0.95% | 0.09% |
| 2088 | -0.95% | 0.1% |
| 2087 | -0.93% | 0.17% |
| 2086 | -0.92% | 0.13% |
| 2085 | -0.91% | 0.15% |
| 2084 | -0.89% | 0.21% |
| 2083 | -0.87% | 0.23% |
| 2082 | -0.86% | 0.25% |
| 2081 | -0.84% | 0.24% |
| 2080 | -0.82% | 0.26% |
| 2079 | -0.8% | 0.31% |
| 2078 | -0.78% | 0.32% |
| 2077 | -0.75% | 0.35% |
| 2076 | -0.73% | 0.38% |
| 2075 | -0.71% | 0.35% |
| 2074 | -0.69% | 0.44% |
| 2073 | -0.67% | 0.45% |
| 2072 | -0.65% | 0.47% |
| 2071 | -0.62% | 0.51% |
| 2070 | -0.6% | 0.53% |
| 2069 | -0.58% | 0.59% |
| 2068 | -0.56% | 0.64% |
| 2067 | -0.55% | 0.65% |
| 2066 | -0.53% | 0.66% |
| 2065 | -0.51% | 0.66% |
| 2064 | -0.49% | 0.67% |
| 2063 | -0.47% | 0.77% |
| 2062 | -0.45% | 0.73% |
| 2061 | -0.44% | 0.79% |
| 2060 | -0.41% | 0.79% |
| 2059 | -0.39% | 0.84% |
| 2058 | -0.37% | 0.86% |
| 2057 | -0.34% | 0.9% |
| 2056 | -0.32% | 0.95% |
| 2055 | -0.29% | 0.93% |
| 2054 | -0.26% | 1.01% |
| 2053 | -0.23% | 1.06% |
| 2052 | -0.2% | 1.12% |
| 2051 | -0.17% | 1.12% |
| 2050 | -0.14% | 1.11% |
| 2049 | -0.11% | 1.19% |
| 2048 | -0.09% | 1.16% |
| 2047 | -0.06% | 1.26% |
| 2046 | -0.03% | 1.28% |
| 2045 | 0.002% | 1.37% |
| 2044 | 0.03% | 1.35% |
| 2043 | 0.05% | 1.37% |
| 2042 | 0.08% | 1.44% |
| 2041 | 0.11% | 1.5% |
| 2040 | 0.13% | 1.5% |
| 2039 | 0.16% | 1.47% |
| 2038 | 0.18% | 1.54% |
| 2037 | 0.2% | 1.59% |
| 2036 | 0.23% | 1.65% |
| 2035 | 0.25% | 1.65% |
| 2034 | 0.27% | 1.69% |
| 2033 | 0.29% | 1.78% |
| 2032 | 0.31% | 1.81% |
| 2031 | 0.33% | 1.81% |
| 2030 | 0.35% | 1.85% |
| 2029 | 0.37% | 1.83% |
| 2028 | 0.39% | 1.97% |
| 2027 | 0.41% | 1.98% |
| 2026 | 0.44% | 2.03% |
| 2025 | 0.45% | 2.06% |
| 2024 | 0.48% | 2.15% |
| 2023 | 0.47% | 2.22% |
| 2022 | 0.43% | 2.25% |
| 2021 | 0.51% | 2.3% |
| 2020 | 0.7% | 2.34% |
| 2019 | 0.84% | 2.35% |
| 2018 | 0.91% | 2.38% |
| 2017 | 0.95% | 2.41% |
| 2016 | 1.02% | 2.38% |
| 2015 | 1.07% | 2.35% |
| 2014 | 1.08% | 2.42% |
| 2013 | 1.12% | 2.49% |
| 2012 | 1.17% | 2.56% |
| 2011 | 1.18% | 2.64% |
| 2010 | 1.25% | 2.76% |
| 2009 | 1.35% | 2.73% |
| 2008 | 1.37% | 2.53% |
| 2007 | 1.36% | 2.22% |
| 2006 | 1.41% | 2.23% |
| 2005 | 1.46% | 2.73% |
| 2004 | 1.48% | 3.44% |
| 2003 | 1.55% | 4.15% |
| 2002 | 1.67% | 5.94% |
| 2001 | 1.81% | 6.08% |
| 2000 | 1.96% | 2.44% |
| 1999 | 2.1% | 0.52% |
| 1998 | 2.19% | 0.99% |
| 1997 | 2.29% | 1.3% |
| 1996 | 2.37% | 0.48% |
| 1995 | 2.44% | 0.15% |
| 1994 | 2.49% | 0.38% |
| 1993 | 2.53% | -0.22% |
| 1992 | 2.56% | -1.88% |
| 1991 | 2.58% | 1.18% |
| 1990 | 2.56% | 4.04% |
| 1989 | 2.55% | 2.53% |
| 1988 | 2.61% | 2.74% |
| 1987 | 2.68% | 2.72% |
| 1986 | 2.75% | 2.47% |
| 1985 | 2.79% | 2.24% |
| 1984 | 2.79% | 2.21% |
| 1983 | 2.79% | 2.16% |
| 1982 | 2.77% | 2.07% |
| 1981 | 2.76% | 2.04% |
| 1980 | 2.76% | 2.01% |
| 1979 | 2.74% | 1.97% |
| 1978 | 2.7% | 1.95% |
| 1977 | 2.67% | 1.87% |
| 1976 | 2.63% | 1.82% |
| 1975 | 2.6% | 1.86% |
| 1974 | 2.58% | 1.87% |
| 1973 | 2.58% | 1.87% |
| 1972 | 2.63% | 1.85% |
| 1971 | 2.7% | 1.88% |
| 1970 | 2.78% | 1.91% |
| 1969 | 2.85% | 1.91% |
| 1968 | 2.97% | 1.92% |
| 1967 | 3.14% | 1.9% |
| 1966 | 3.27% | 1.86% |
| 1965 | 3.41% | 1.83% |
| 1964 | 3.53% | 1.77% |
| 1963 | 3.65% | 1.71% |
| 1962 | 3.74% | 1.65% |
| 1961 | 3.8% | 1.58% |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1961–2025, retrieved 2026-07-08).
GeoRank.org/population/costa-rica/sierra-leone | CC BY
In 2025, the population of Costa Rica grew by 0.45%, while Sierra Leone's population grew by 2.06%.
Live population counters
|
Costa Rica
|
Sierra Leone
|
|
|---|---|---|
| Current population |
5186356
|
9090531
|
| Population rank | 126/197 | 100/197 |
| Percent of world population | 0.06% | 0.11% |
| One net population change |
22.9 minutes
|
2.96 minutes
|
| One birth every |
10.3 minutes
|
2.02 minutes
|
| One death every |
18.4 minutes
|
7.41 minutes
|
| Daily growth/decline | +63 | +487 |
| Annual growth/decline | +23,040 | +177,772 |
| Annual growth/decline rate | +0.45% | +2.06% |
| Population growth rate rank | 134/197 | 47/197 |
| One migration net change every |
8.78 hours
|
46.6 minutes
|
| Annual migration change | +1,000 | -11,309 |
| Net migration rank | 63/196 | 136/196 |
| Foreign-born residents | 628,404 | 49,997 |
| Foreign-born residents rank | 75/195 | 151/195 |
| Foreign-born share of population | 12.2% | 0.6% |
| Foreign-born share rank | 55/195 | 174/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Costa Rica
|
Sierra Leone
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | 1,000 | - | -11,309 |
| 2024 | 22,699 | 967 | 189,234 | -11,000 |
| 2023 | 24,109 | 995 | 188,788 | -4,000 |
| 2022 | 21,409 | 1,006 | 186,625 | -4,000 |
| 2021 | 20,119 | 1,018 | 183,326 | -1,544 |
| 2020 | 29,164 | 1,029 | 181,015 | 1,292 |
| 2019 | 37,682 | 1,653 | 181,068 | -2,238 |
| 2018 | 42,469 | 1,673 | 178,772 | -2,741 |
| 2017 | 43,471 | 1,671 | 173,259 | 1,234 |
| 2016 | 45,565 | 1,649 | 168,784 | 4,657 |
| 2015 | 49,077 | 1,617 | 162,275 | -356 |
| 2014 | 49,559 | 1,589 | 160,137 | 485 |
| 2013 | 49,227 | 1,579 | 161,265 | 2,773 |
| 2012 | 52,036 | 1,587 | 160,915 | 988 |
| 2011 | 52,884 | 1,695 | 158,858 | 6,895 |
| 2010 | 50,803 | 2,357 | 155,338 | 7,983 |
| 2009 | 55,757 | 3,432 | 152,669 | 18,145 |
| 2008 | 56,491 | 3,794 | 149,855 | 1,182 |
| 2007 | 55,244 | 4,080 | 145,740 | -6,042 |
| 2006 | 54,177 | 4,321 | 144,127 | -34,052 |
| 2005 | 57,139 | 4,567 | 137,234 | -1,805 |
| 2004 | 55,769 | 4,856 | 132,661 | 23,897 |
| 2003 | 56,743 | 5,216 | 130,312 | 69,185 |
| 2002 | 58,388 | 5,812 | 126,429 | 86,578 |
| 2001 | 62,199 | 7,119 | 116,647 | 227,791 |
| 2000 | 64,268 | 8,826 | 110,754 | 83,013 |
| 1999 | 64,922 | 13,253 | 102,295 | -84,926 |
| 1998 | 64,788 | 15,556 | 103,906 | -76,766 |
| 1997 | 64,954 | 16,954 | 105,433 | -48,437 |
| 1996 | 66,094 | 17,393 | 104,140 | -52,110 |
| 1995 | 67,585 | 16,609 | 100,885 | -112,857 |
| 1994 | 68,336 | 15,587 | 101,486 | -77,371 |
| 1993 | 69,016 | 14,431 | 103,317 | -95,476 |
| 1992 | 69,830 | 13,069 | 103,251 | -129,565 |
| 1991 | 70,506 | 10,757 | 105,477 | -238,965 |
| 1990 | 71,727 | 7,949 | 100,778 | 131,587 |
| 1989 | 72,327 | 3,758 | 98,298 | -5,079 |
| 1988 | 72,944 | 2,414 | 96,344 | 9,470 |
| 1987 | 73,188 | 2,267 | 94,235 | 9,558 |
| 1986 | 73,211 | 2,302 | 90,902 | 7,992 |
| 1985 | 72,776 | 2,357 | 88,869 | -7,873 |
| 1984 | 71,062 | 2,402 | 87,072 | -8,708 |
| 1983 | 68,972 | 2,449 | 84,628 | -8,783 |
| 1982 | 66,826 | 2,453 | 82,457 | -11,379 |
| 1981 | 64,632 | 2,431 | 80,111 | -12,699 |
| 1980 | 62,561 | 2,387 | 77,932 | -11,641 |
| 1979 | 60,984 | 2,349 | 75,992 | -13,095 |
| 1978 | 58,327 | 2,296 | 74,130 | -13,073 |
| 1977 | 56,122 | 2,228 | 71,663 | -12,399 |
| 1976 | 54,019 | 2,129 | 69,506 | -15,686 |
| 1975 | 51,979 | 1,992 | 67,560 | -13,058 |
| 1974 | 50,349 | 1,839 | 65,357 | -11,473 |
| 1973 | 48,943 | 1,468 | 62,443 | -9,322 |
| 1972 | 48,417 | 1,366 | 60,279 | -8,267 |
| 1971 | 48,341 | 1,296 | 58,484 | -8,162 |
| 1970 | 48,398 | 1,137 | 56,513 | -4,957 |
| 1969 | 48,790 | 1,017 | 54,768 | -4,485 |
| 1968 | 48,361 | 939 | 53,126 | -3,743 |
| 1967 | 50,193 | 926 | 51,734 | -2,819 |
| 1966 | 50,755 | 930 | 49,486 | -2,911 |
| 1965 | 51,196 | 932 | 47,223 | -1,851 |
| 1964 | 51,435 | 934 | 45,487 | -2,308 |
| 1963 | 51,403 | 938 | 43,569 | -2,480 |
| 1962 | 51,046 | 934 | 41,603 | -2,658 |
| 1961 | 50,149 | 924 | 40,022 | -2,947 |
| 1960 | 48,857 | 910 | 38,192 | -3,528 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/costa-rica/sierra-leone | CC BY
Over the last 10 years, 96.2% of the population change in Costa Rica is from natural causes (a gain of 335,764 people) and 3.8% is from migration (a gain of 13,278 people). In Sierra Leone 99% is from natural causes (a gain of 1,793,146 people) and 1.03% is from migration (a loss of 18,696 people).
As of 2024, 628,404 residents or 12.2% of the population were not native-born in Costa Rica, compared to 49,997 people or 0.6% in Sierra Leone.
Biggest cities by population
|
Costa Rica
|
|
|---|---|
| City | Population |
| San Jose | 335K |
| Limon | 71.5K |
| Liberia | 65.9K |
| Alajuela | 44.4K |
| Puntarenas | 41.5K |
| Cartago | 22.8K |
| Heredia | 16.7K |
| Tamarindo | 7.13K |
| Santa Teresa | 3K |
|
Sierra Leone
|
|
|---|---|
| City | Population |
| Freetown | 951K |
| Bo | 234K |
| Kenema | 188K |
Compare countries by 7 more topics
Population differences between Costa Rica and Sierra Leone
|
Costa Rica
|
Sierra Leone
|
|
|---|---|---|
| Life expectancy | 81.4 years | 62.3 years |
| Average age | 37.5 years | 24.6 years |
| Median age | 36.2 years | 20.7 years |
| Male:Female ratio | 49.4:50.6 | 49.9:50.1 |
| Fertility rate | 1.32 births per woman | 3.7 births per woman |
| Population density | 262.5 ppl/mi² | 323 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08); United Nations | World Population Prospects (1960–2026, retrieved 2026-07-08); U.S. Census Bureau (1960–2025, retrieved 2026-07-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08).
GeoRank.org/population/costa-rica/sierra-leone | CC BY
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Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
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