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Top 100 Largest 20th Centuries Countries/Empires by Population

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ruasonid
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Last updated: June 18, 2025
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First submittedApril 16, 2023
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Population
Answer
Year
Region
1,269,751,500
PR China
2000
East Asia
1,059,634,000
India
2000
South Asia
605,289,211
United Kingdom
1946
Western Europe
495,582,240
Republic of China
1948
East Asia
463,677,000
Empire of Japan
1943
East Asia
429,838,476
Qing China
1911
East Asia
338,662,858
Nazi Germany
1942
Central Europe
286,730,819
Soviet Union
1989
Eastern Europe
285,218,906
United States
2000
Northern America
214,072,000
Indonesia
2000
Southeast Asia
176,400,000
Russian Empire
1913
Eastern Europe
173,839,000
Brazil
2000
South America
154,369,924
Pakistan
2000
South Asia
150,000,000
France
1938
Western Europe
148,538,000
Russian Federation
1992
Eastern Europe
146,112,000
Russian SFSR
1922
Eastern Europe
129,193,000
Bangladesh
2000
South Asia
126,925,843
Japan
2000
East Asia
123,663,852
German Empire
1918
Central Europe
121,235,000
Nigeria
2000
West Africa
102,317,000
Mexico
1999
Central America
112,573,140
Free France
1944
West Africa
90,009,000
Netherlands
1948
Western Europe
82,100,000
FR Germany
1999
Central Europe
80,354,667
Zhili clique
1926
East Asia
Population
Answer
Year
Region
78,758,000
Vietnam
2000
Southeast Asia
76,506,928
Philippines
2000
Southeast Asia
72,706,901
Kingdom of Italy
1941
Southern Europe
67,803,927
Turkey
2000
West Asia
67,032,000
Ethiopia
2000
East Africa
65,716,000
Weimar Republic
1932
Central Europe
65,544,000
Iran
2000
West Asia
63,860,000
Egypt
2000
North Africa
63,254,000
West Germany
1990
Central Europe
61,878,746
Thailand
2000
Southeast Asia
57,569,697
Austria-Hungary
1917
Central Europe
56,940,000
Italian Republic
2000
Southern Europe
52,150,000
Ukraine
1992
Eastern Europe
48,616,317
DR Congo
2000
Central Africa
48,163,573
North Vietnam
1976
Southeast Asia
47,258,111
South Korea
2000
East Asia
46,706,229
Derg
1987
East Africa
46,498,539
Zaire
1996
Central Africa
46,364,681
South Africa
1999
Southern Africa
45,538,332
Myanmar
2000
Southeast Asia
42,107,667
Guizhou clique
1935
East Asia
42,107,667
Sichuan clique
1935
East Asia
40,264,000
Spain
2000
Southern Europe
40,177,333
Guominjun
1926
East Asia
40,177,333
Hunan warlords
1926
East Asia
Population
Answer
Year
Region
40,177,333
Shanxi clique
1926
East Asia
40,035,417
Anhui clique
1925
East Asia
40,035,417
Guangxi clique
1925
East Asia
39,894,000
Fengtian clique
1924
East Asia
39,489,419
Burma
1989
Southeast Asia
39,220,000
Peru
2000
South America
38,666,000
Poland
1998
Eastern Europe
37,970,155
PR Poland
1989
Eastern Europe
37,945,000
United Arab Republic
1970
North Africa
37,205,000
Pahlavi Iran
1979
West Asia
36,931,000
Argentina
2000
South America
35,762,954
Francoist Spain
1975
Southern Europe
35,100,000
First Polish Republic
1939
Eastern Europe
34,464,000
Tanzania
2000
East Africa
32,902,220
Ethiopian Empire
1974
East Africa
32,413,000
Sudan
2000
East Africa
30,685,730
Canada
2000
Northern America
30,416,000
Algeria
2000
North Africa
30,398,000
Kenya
2000
East Africa
29,582,607
Belgium
1958
Western Europe
28,466,000
Morocco
2000
North Africa
27,274,815
Portugal
1975
Southern Europe
25,900,000
Makhnovshchina
1921
Eastern Europe
24,650,000
Uzbekistan
2000
Central Asia
24,559,500
Nepal
2000
South Asia
Population
Answer
Year
Region
24,427,729
Venezuela
2000
South America
24,020,697
Uganda
2000
East Africa
24,000,000
Ottoman Empire
1912
West Asia
23,657,623
SFR Yugoslavia
1990
Southern Europe
23,497,585
Iraq
2000
West Asia
23,494,900
Malaysia
2000
Southeast Asia
23,367,000
North Korea
2000
East Asia
23,206,720
Romania
1990
Eastern Europe
23,151,564
SR Romania
1989
Eastern Europe
22,276,672
Taiwan
2000
East Asia
20,712,952
Congo-Léopoldville
1971
Central Africa
20,058,378
Kingdom of Romania
1940
Eastern Europe
20,045,000
Saudi Arabia
2000
West Asia
19,666,000
Ghana
2000
West Africa
19,543,000
Afghanistan
2000
South Asia
19,325,000
Dominion of Canada
1964
Northern America
18,776,371
Sri Lanka
2000
South Asia
18,395,882
PR Hungary
1919
Central Europe
18,388,172
East Germany
1950
Central Europe
17,769,000
Mozambique
2000
Southern Africa
17,723,000
Yemen
2000
West Asia
17,082,000
Korean Empire
1900
East Asia
16,593,139
Union of South Africa
1960
Southern Africa
16,455,000
Ivory Coast
2000
West Africa
16,439,000
Kazakhstan
1992
Central Asia
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