| Historical Demographics | |||
|---|---|---|---|
Altar of Domitius Ahenobarbus | |||
| Articles | |||
| Historical demography | |||
| World population estimates | |||
| List of Countries by Population | |||
| 1800 | 1900 | 1939 | |
This is a list of countries by population in 1900, with colonial possessions being counted towards the ruling country's total (such as Poland counting towards Russia and Cuba counting as part of the United States).
Estimate numbers are from the beginning of the year and exact population figures are for countries that held a census on various dates in the year 1900.
| Rank | Country/Territory | Population estimate | Percentage of World Population | |
|---|---|---|---|---|
| — | World | 1,700,100,000[1] | 100% | |
| 1 | ~400,800,000 | 23.51% | ||
| 2 | 400,000,000 | 23.5% | ||
| 3 | 136,305,900 | 8.0% | ||
| 4 |  United States | 78,816,167 | 4.6% | |
| 5 | French Empire | 78,790,700 | 4.6% | |
| 6 | German Empire | 67,609,178[2] | 4.0% | |
| 7 | 48,300,000 | 2.8% | ||
| 8 | 47,980,100 | 2.8% | ||
| 9 | 46,605,000[3] | 2.7% | ||
| 10 | 33,095,000 | 1.9% | ||
| 11 | 31,706,300 | 1.9% | ||
| 12 | Sokoto Caliphate | 10-20,000,000[4] [5] | 0.6-1.1% | |
| 13 |  Spanish Empire | 18,834,000 | 1.1% | |
| 14 |  Brazil | 17,984,000 | 1.1% | |
| 16 | 17,082,000[6] | 1.0% | ||
| 17 | Belgian colonial empire | 15,426,500 | 0.9% | |
| 18 |  Mexico | 13,607,000 | 0.8% | |
| 19 |  Portuguese Empire | 12,434,000 | 0.7% | |
| 20 |  Ethiopian Empire | 12,180,600[7] | 0.7% | |
| 21 | Qajar Iran | 9,860,000 | 0.6% | |
| 22 | Philippines | 7,409,000 | 0.4% | |
| 23 | Union between Sweden and Norway | 7,354,400 | 0.4% | |
| 24 |  Morocco | 7,000,000[8] | 0.4% | |
| 25 |  Siam | 6,320,000 | 0.4% | |
| 26 | 6,000,000 | 0.4% | ||
| 27 |  Afghanistan | 4,550,000 | 0.3% | |
| 28 |  Argentina | 4,542,000 | 0.3% | |
| 29 | Jabal Shammar | ~4,218,000 | ~0.2% | |
| 30 |  Colombia | 4,157,000 | 0.2% | |
| 31 |  Bulgaria | 3,744,300 | 0.2% | |
| 32 | 3,599,000 | 0.2% | ||
| 33 |  Switzerland | 3,315,400 | 0.2% | |
| 34 |  Chile | 3,110,100 | 0.18% | |
| 35 |  Peru | 3,000,000 | 0.18% | |
| 36 | 2,579,800 | 0.15% | ||
| 37 | Danish Empire | 2,569,000 | 0.15% | |
| 39 | 2,445,000 | 0.14% | ||
| 40 | 1,766,000 | 0.1% | ||
| 41 | 1,400,000 | |||
| 42 |  Ecuador | 1,271,900 | ||
| 43 |  Uruguay | 943,000 | ||
| 44 |  Guatemala | 885,000 | ||
| 45 |  El Salvador | 801,000 | ||
| 46 |  Liberia | 641,000 | ||
| 47 |  Paraguay | 635,600 | ||
| 48 |  Dominican Republic | 600,000 | ||
| 49 |  Honduras | 543,700 | ||
| 50 | Muscat and Oman | 500,000 | ||
| 51 |  Nicaragua | 429,300 | ||
| 52 | Orange Free State | 400,000 | ||
| 53 |  Costa Rica | 341,600 | ||
| 54 | 320,000 | |||
| 55 |  Bhutan | 280,000 | ||
| 56 |  Luxembourg | 252,000 | ||
| 57 |  Monaco | 19,000 | ||
| 58 |  San Marino | 11,000 | ||
| 59 |  Liechtenstein | 10,000 | ||
| 60 |  Andorra | 6,000 |