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Population in South Sudan compared to Sri Lanka: Trends, Charts, Rankings

Updated on by Georank

The latest officially reported population of South Sudan was 12,188,788 in 2025 vs 21,756,000 people in Sri Lanka in 2025. In 2026, based on the adjusted UN estimation, the current South Sudan's population is 12,565,048 people compared to 21,926,160 in Sri Lanka.

Population statistics:

  • Sri Lanka's population is 1.75 times bigger than South Sudan's.
  • South Sudan is ranked the 80th most populous country in the world, while Sri Lanka is the 63rd.
  • The countries together account for 0.42% of the world: 0.15% for South Sudan vs 0.26% for Sri Lanka.
  • For the last 10 years, South Sudan has had an average growth rate of +0.78% per year vs +0.42% in Sri Lanka.
  • Since 2006, the population of South Sudan has increased from 7.98M people to 12.6M (57.5% growth), while Sri Lanka has grown from 20.4M to 21.9M (7.73% growth).

South Sudan vs Sri Lanka: population by year and forecast

South Sudan
Factual

Projection
Sri Lanka
Factual

Projection
1x
Year Population
South Sudan Sri Lanka
2100 24,078,379 20,009,380
2099 24,072,957 20,121,095
2098 24,054,947 20,234,513
2097 24,056,753 20,345,619
2096 24,045,972 20,456,607
2095 24,037,837 20,566,246
2094 24,039,267 20,674,019
2093 24,030,512 20,780,946
2092 24,010,555 20,886,274
2091 23,991,816 20,990,047
2090 23,970,012 21,095,968
2089 23,929,017 21,198,788
2088 23,883,712 21,299,229
2087 23,848,809 21,398,269
2086 23,794,890 21,496,892
2085 23,750,772 21,594,661
2084 23,678,728 21,687,323
2083 23,609,290 21,778,597
2082 23,532,790 21,866,395
2081 23,458,146 21,954,337
2080 23,383,482 22,038,953
2079 23,286,011 22,122,744
2078 23,188,860 22,200,069
2077 23,078,416 22,274,355
2076 22,979,198 22,345,857
2075 22,860,496 22,414,609
2074 22,718,148 22,485,066
2073 22,575,682 22,550,427
2072 22,431,004 22,610,645
2071 22,280,140 22,669,042
2070 22,143,813 22,725,948
2069 21,995,874 22,779,050
2068 21,822,076 22,831,596
2067 21,654,546 22,885,941
2066 21,489,275 22,935,123
2065 21,309,913 22,985,942
2064 21,134,522 23,030,844
2063 20,957,705 23,071,114
2062 20,777,701 23,107,970
2061 20,601,672 23,139,924
2060 20,423,629 23,171,649
2059 20,227,862 23,199,387
2058 20,041,880 23,224,997
2057 19,846,671 23,247,211
2056 19,652,407 23,267,292
2055 19,457,411 23,278,653
2054 19,250,667 23,287,520
2053 19,053,773 23,297,347
2052 18,833,795 23,301,287
2051 18,626,605 23,302,108
2050 18,427,690 23,299,282
2049 18,224,430 23,293,630
2048 18,014,650 23,283,465
2047 17,799,982 23,267,251
2046 17,572,953 23,244,081
2045 17,348,901 23,212,221
2044 17,115,914 23,181,041
2043 16,882,303 23,144,217
2042 16,639,465 23,103,489
2041 16,390,966 23,056,478
2040 16,137,104 23,005,928
2039 15,884,330 22,948,866
2038 15,622,514 22,888,821
2037 15,358,539 22,822,943
2036 15,085,936 22,756,462
2035 14,810,066 22,685,766
2034 14,538,365 22,611,514
2033 14,273,128 22,532,374
2032 14,002,178 22,449,310
2031 13,725,779 22,364,063
2030 13,460,850 22,273,377
2029 13,201,804 22,181,300
2028 12,942,501 22,082,826
2027 12,688,278 21,979,196
2026 12,434,895 21,870,145
2025 12,188,788 21,756,000
2024 11,943,408 21,916,000
2023 11,483,374 22,037,000
2022 11,021,177 22,181,000
2021 10,865,780 22,156,000
2020 10,698,467 21,919,000
2019 10,423,384 21,803,000
2018 10,122,977 21,670,000
2017 10,259,154 21,453,000
2016 10,830,102 21,209,000
2015 11,107,561 20,970,000
2014 11,235,073 20,778,000
2013 11,166,275 20,585,000
2012 10,756,240 21,169,458
2011 10,288,109 21,009,048
2010 9,745,953 20,879,089
2009 9,243,556 20,756,435
2008 8,817,647 20,629,378
2007 8,388,788 20,492,545
2006 7,976,526 20,352,411
2005 7,590,143 20,216,524
2004 7,233,041 20,087,605
2003 6,903,127 19,951,521
2002 6,596,806 19,805,752
2001 6,308,391 19,600,362
2000 6,032,267 19,293,054
1999 5,771,628 18,944,731
1998 5,620,068 18,596,003
1997 5,509,136 18,248,200
1996 5,356,925 17,905,018
1995 5,225,836 17,564,068
1994 5,071,184 17,275,773
1993 4,956,002 17,025,918
1992 4,909,749 16,739,284
1991 4,836,677 16,475,354
1990 4,737,633 16,352,458
1989 4,713,229 16,248,557
1988 4,848,029 16,078,621
1987 4,962,395 15,916,576
1986 4,921,240 15,731,256
1985 4,834,296 15,544,154
1984 4,750,627 15,441,860
1983 4,661,574 15,388,794
1982 4,557,686 15,286,567
1981 4,447,272 15,099,414
1980 4,339,030 14,847,974
1979 4,232,605 14,579,614
1978 4,127,657 14,310,128
1977 4,024,032 14,049,371
1976 3,921,910 13,796,770
1975 3,821,494 13,548,984
1974 3,723,259 13,305,693
1973 3,627,383 13,060,916
1972 3,542,497 12,809,205
1971 3,468,646 12,551,910
1970 3,409,614 12,287,110
1969 3,365,533 12,013,858
1968 3,321,528 11,736,088
1967 3,277,648 11,457,328
1966 3,236,423 11,183,928
1965 3,189,835 10,916,965
1964 3,129,918 10,653,397
1963 3,072,669 10,395,040
1962 3,024,308 10,143,754
1961 2,976,724 9,899,372
1960 2,931,559 9,661,389

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/south-sudan/sri-lanka | CC BY

From 2006 to 2016, the population of South Sudan increased by 2,853,576 people (a 35.8% growth), while Sri Lanka gained 856,589 people (a 4.21% growth).

For the next 10 years, from 2016 to 2026, South Sudan gained 1,734,946 people (a 16% growth), while Sri Lanka's population increased by 717,160 people (a 3.38% growth).

South Sudan was ranked 92nd most populous country in 2006 and is 80th in 2026. Sri Lanka was ranked 55th in 2006 and ranked 63rd now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) South Sudan's population will grow by 46.7% to 18,427,690 people with a rank change from 80th to 78th. The population of Sri Lanka will increase by 6.26% to 23,299,282 people and rank change from 63rd to 71st.

South Sudan is projected to reach its peak in 2100 at 24.1M people compared to the peak of 23.3M people in 2051 for Sri Lanka.

Population growth rate by year

South Sudan
Factual

Projection
Sri Lanka
Factual

Projection
1x
Year Growth rate
South Sudan Sri Lanka
2100 0.02% -0.56%
2099 0.07% -0.56%
2098 -0.008% -0.55%
2097 0.04% -0.54%
2096 0.03% -0.53%
2095 -0.006% -0.52%
2094 0.04% -0.51%
2093 0.08% -0.5%
2092 0.08% -0.49%
2091 0.09% -0.5%
2090 0.17% -0.49%
2089 0.19% -0.47%
2088 0.15% -0.46%
2087 0.23% -0.46%
2086 0.19% -0.45%
2085 0.3% -0.43%
2084 0.29% -0.42%
2083 0.33% -0.4%
2082 0.32% -0.4%
2081 0.32% -0.38%
2080 0.42% -0.38%
2079 0.42% -0.35%
2078 0.48% -0.33%
2077 0.43% -0.32%
2076 0.52% -0.31%
2075 0.63% -0.31%
2074 0.63% -0.29%
2073 0.64% -0.27%
2072 0.68% -0.26%
2071 0.62% -0.25%
2070 0.67% -0.23%
2069 0.8% -0.23%
2068 0.77% -0.24%
2067 0.77% -0.21%
2066 0.84% -0.22%
2065 0.83% -0.19%
2064 0.84% -0.17%
2063 0.87% -0.16%
2062 0.85% -0.14%
2061 0.87% -0.14%
2060 0.97% -0.12%
2059 0.93% -0.11%
2058 0.98% -0.1%
2057 0.99% -0.09%
2056 1% -0.05%
2055 1.07% -0.04%
2054 1.03% -0.04%
2053 1.17% -0.02%
2052 1.11% -0.004%
2051 1.08% 0.01%
2050 1.12% 0.02%
2049 1.16% 0.04%
2048 1.21% 0.07%
2047 1.29% 0.1%
2046 1.29% 0.14%
2045 1.36% 0.13%
2044 1.38% 0.16%
2043 1.46% 0.18%
2042 1.52% 0.2%
2041 1.57% 0.22%
2040 1.59% 0.25%
2039 1.68% 0.26%
2038 1.72% 0.29%
2037 1.81% 0.29%
2036 1.86% 0.31%
2035 1.87% 0.33%
2034 1.86% 0.35%
2033 1.94% 0.37%
2032 2.01% 0.38%
2031 1.97% 0.41%
2030 1.96% 0.42%
2029 2% 0.45%
2028 2% 0.47%
2027 2.04% 0.5%
2026 2.02% 0.52%
2025 2.05% -0.73%
2024 4.01% -0.55%
2023 4.19% -0.65%
2022 1.43% 0.11%
2021 1.56% 1.08%
2020 2.64% 0.53%
2019 2.97% 0.61%
2018 -1.33% 1.01%
2017 -5.27% 1.15%
2016 -2.5% 1.14%
2015 -1.13% 0.92%
2014 0.62% 0.94%
2013 3.81% -2.76%
2012 4.55% 0.76%
2011 5.56% 0.62%
2010 5.44% 0.59%
2009 4.83% 0.62%
2008 5.11% 0.67%
2007 5.17% 0.69%
2006 5.09% 0.67%
2005 4.94% 0.64%
2004 4.78% 0.68%
2003 4.64% 0.74%
2002 4.57% 1.05%
2001 4.58% 1.59%
2000 4.52% 1.84%
1999 2.7% 1.88%
1998 2.01% 1.91%
1997 2.84% 1.92%
1996 2.51% 1.94%
1995 3.05% 1.67%
1994 2.32% 1.47%
1993 0.94% 1.71%
1992 1.51% 1.6%
1991 2.09% 0.75%
1990 0.52% 0.64%
1989 -2.78% 1.06%
1988 -2.3% 1.02%
1987 0.84% 1.18%
1986 1.8% 1.2%
1985 1.76% 0.66%
1984 1.91% 0.34%
1983 2.28% 0.67%
1982 2.48% 1.24%
1981 2.49% 1.69%
1980 2.51% 1.84%
1979 2.54% 1.88%
1978 2.58% 1.86%
1977 2.6% 1.83%
1976 2.63% 1.83%
1975 2.64% 1.83%
1974 2.64% 1.87%
1973 2.4% 1.97%
1972 2.13% 2.05%
1971 1.73% 2.16%
1970 1.31% 2.27%
1969 1.32% 2.37%
1968 1.34% 2.43%
1967 1.27% 2.44%
1966 1.46% 2.45%
1965 1.91% 2.47%
1964 1.86% 2.49%
1963 1.6% 2.48%
1962 1.6% 2.47%
1961 1.54% 2.46%

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/south-sudan/sri-lanka | CC BY

In 2025, the population of South Sudan grew by 2.05%, while Sri Lanka's population declined by 0.73%.

Live population counters

South Sudan Sri Lanka
Current population
12565048
21926160
Population rank 80/197 63/197
Percent of world population 0.15% 0.26%
One net population change
2.15 minutes
3.29 minutes
One birth every
1.51 minutes
2.37 minutes
One death every
4.48 minutes
3.07 minutes
Daily growth/decline +672 -438
Annual growth/decline +245,380 -160,000
Annual growth/decline rate +2.05% -0.73%
Population growth rate rank 48/197 190/197
One migration net change every
1.43 hours
17.2 minutes
Annual migration change +6,145 -30,724
Net migration rank 50/196 165/196
Foreign-born residents 914,001 40,698
Foreign-born residents rank 62/195 156/195
Foreign-born share of population 7.7% 0.2%
Foreign-born share rank 77/195 190/195

Natural population change vs migration

South Sudan
Natural

Migration
Sri Lanka
Natural

Migration
1x
Year Population change
South Sudan Sri Lanka
Natural Migration Natural Migration
2025 - 6,145 - -30,724
2024 231,714 15,374 50,407 -27,245
2023 217,966 455,000 66,111 -28,011
2022 211,166 40,259 95,378 -27,435
2021 213,567 -154,359 121,858 -29,586
2020 212,332 62,935 170,968 -29,875
2019 209,708 65,198 172,243 -28,426
2018 168,497 157,408 183,610 -28,607
2017 72,193 -670,477 187,993 -22,324
2016 110,553 -654,225 194,232 -18,388
2015 148,542 -159,822 201,815 -29,797
2014 227,611 -471,523 211,541 -33,672
2013 315,983 65,337 221,021 -37,754
2012 312,974 125,771 229,138 -41,955
2011 303,181 194,325 224,461 -90,839
2010 287,409 299,402 224,325 -98,060
2009 278,859 139,129 200,175 -81,130
2008 268,268 165,557 232,225 -97,144
2007 256,546 167,350 248,287 -109,695
2006 246,706 153,926 248,706 -107,045
2005 239,272 132,869 248,683 -118,594
2004 231,877 110,182 212,527 -84,795
2003 225,822 91,951 252,008 -107,573
2002 212,014 82,847 252,840 -105,718
2001 204,108 77,856 244,377 19,273
2000 196,055 74,227 227,060 123,894
1999 180,721 70,271 206,876 138,799
1998 -12,157 64,285 201,059 150,724
1997 121,454 48,280 208,193 135,636
1996 116,728 17,953 215,290 127,236
1995 110,417 17,077 221,957 117,416
1994 165,407 16,407 228,904 8,323
1993 32,779 15,772 226,257 36,232
1992 28,874 15,077 222,230 88,542
1991 87,873 14,327 218,117 -1,047
1990 82,900 12,988 224,454 -195,736
1989 83,735 -130,821 212,401 -33,305
1988 -125,447 -97,065 219,184 -58,415
1987 5,756 -11,976 226,414 -63,105
1986 99,502 -10,973 233,782 -26,460
1985 95,342 -9,986 247,836 -80,950
1984 90,970 -8,984 263,175 -225,450
1983 104,107 -7,986 277,768 -209,362
1982 118,641 -6,983 300,030 -163,987
1981 115,163 -5,994 328,096 -89,824
1980 112,307 -4,997 328,155 -63,541
1979 109,540 -3,997 329,791 -57,683
1978 107,352 -2,998 317,055 -50,189
1977 104,886 -1,997 300,038 -45,383
1976 102,346 -995 291,816 -41,258
1975 99,882 -395 282,496 -37,475
1974 97,181 -192 275,521 -33,979
1973 94,765 0 278,577 -30,582
1972 74,803 193 282,494 -27,071
1971 72,308 394 281,200 -22,021
1970 44,776 587 286,719 -16,299
1969 42,015 786 286,218 -10,152
1968 44,213 995 286,642 -7,163
1967 41,357 1,194 284,738 -6,696
1966 38,523 1,386 275,549 -6,794
1965 51,682 1,591 272,422 -7,249
1964 64,786 1,785 269,584 -7,614
1963 46,333 1,591 262,880 -8,118
1962 47,406 1,386 256,719 -8,909
1961 45,186 1,194 251,087 -10,144
1960 42,945 995 247,631 -12,610

Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).

GeoRank.org/population/south-sudan/sri-lanka | CC BY

Over the last 10 years, 68.1% of the population change in South Sudan is from natural causes (a gain of 1,796,238 people) and 31.9% is from migration (a loss of 842,709 people). In Sri Lanka 84.3% is from natural causes (a gain of 1,444,615 people) and 15.7% is from migration (a loss of 269,694 people).

As of 2024, 914,001 residents or 7.7% of the population were not native-born in South Sudan, compared to 40,698 people or 0.2% in Sri Lanka.

Biggest cities by population

South Sudan
City Population
Juba 500K
Wau 321K
Bor 315K
Malakal 147K
Yambio 130K
Sri Lanka
City Population
Colombo 648K
Gampaha 191K
Beruwala 165K
Negombo 142K
Kandy 120K
Sri Jayawardenepura Kotte 116K
Trincomalee 99.1K
Galle 93.1K
Matara 68.2K
Anuradhapura 63.2K

Compare countries by 7 more topics

Population map with other countries

1x

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/south-sudan/sri-lanka | CC BY

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-07-08)
  2. United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
  4. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
  5. Wikidata (2026, retrieved 2026-07-08)

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