Prefecture
The population development of Oita Prefecture according to census results.
| Name | Abbr. | Status | Native | Capital | Area A-L (km²) | Population Census (Cf) 1995-10-01 | Population Census (Cf) 2000-10-01 | Population Census (Cf) 2005-10-01 | Population Census (Cf) 2010-10-01 | Population Census (Cf) 2015-10-01 | Population Census (Cf) 2020-10-01 | Population Census (Cp) 2025-10-01 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ōita | 44 | Pref | 大分県 | Ōita | 6,341 | 1,231,306 | 1,221,140 | 1,209,571 | 1,196,529 | 1,166,338 | 1,123,852 | 1,076,875 | 634100 | → |
| Japan | JPN | 日本国 | Tōkyō | 377,980 | 125,570,246 | 126,925,843 | 127,767,994 | 128,057,352 | 127,094,745 | 126,146,099 | 123,049,524 | → |
- Statistics Bureau Japan.
Major Cities
| Name | Population Census (Cp) 2025-10-01 | |
|---|---|---|
| 1 | Ōita | 470,172 |
| 2 | Beppu | 112,267 |
| 3 | Nakatsu | 80,169 |
| 4 | Saiki | 60,692 |
| 5 | Hita | 57,943 |
| 6 | Usa | 49,040 |
Contents: Cities & Towns
The population of all cities and towns of Oita Prefecture with more than 20,000 inhabitants according to census results.
| Name | Status | Native | Population Census (Cf) 1995-10-01 | Population Census (Cf) 2000-10-01 | Population Census (Cf) 2005-10-01 | Population Census (Cf) 2010-10-01 | Population Census (Cf) 2015-10-01 | Population Census (Cf) 2020-10-01 | Population Census (Cp) 2025-10-01 | Area | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Beppu | City | 別府市 | 128,255 | 126,523 | 126,959 | 125,385 | 122,138 | 115,321 | 112,267 | 12534 | → |
| Bungo-ōno (Mie) | City | 豊後大野市 | 45,191 | 43,371 | 41,548 | 39,452 | 36,584 | 33,695 | 30,504 | 60314 | → |
| Bungotakada | City | 豊後高田市 | 27,337 | 26,206 | 25,114 | 23,906 | 22,853 | 22,112 | 21,277 | 20622 | → |
| Hiji | Town | 日出町 | 24,433 | 26,142 | 27,640 | 28,221 | 28,058 | 27,723 | 26,954 | 7326 | → |
| Hita | City | 日田市 | 79,776 | 77,369 | 74,165 | 70,940 | 66,523 | 62,657 | 57,943 | 66603 | → |
| Kitsuki | City | 杵築市 | 33,370 | 33,363 | 33,567 | 32,083 | 30,185 | 27,999 | 25,281 | 28008 | → |
| Kunisaki | City | 国東市 | 36,253 | 35,425 | 34,206 | 32,002 | 28,647 | 26,232 | 23,676 | 31809 | → |
| Nakatsu | City | 中津市 | 86,679 | 85,617 | 84,368 | 84,312 | 83,965 | 82,863 | 80,169 | 49138 | → |
| Ōita | City | 大分市 | 446,581 | 454,424 | 462,317 | 474,094 | 478,146 | 475,614 | 470,172 | 50239 | → |
| Saiki | City | 佐伯市 | 88,116 | 84,449 | 80,297 | 76,951 | 72,211 | 66,851 | 60,692 | 90314 | → |
| Taketa | City | 竹田市 | 30,368 | 28,689 | 26,534 | 24,423 | 22,332 | 20,332 | 17,696 | 47753 | → |
| Tsukumi | City | 津久見市 | 24,848 | 23,164 | 21,456 | 19,917 | 17,969 | 16,100 | 14,057 | 7948 | → |
| Usa | City | 宇佐市 | 63,819 | 62,349 | 60,809 | 59,008 | 56,258 | 52,771 | 49,040 | 43899 | → |
| Usuki | City | 臼杵市 | 46,830 | 45,486 | 43,352 | 41,469 | 38,748 | 36,158 | 32,729 | 29126 | → |
| Yufu (Shōnai - Hasama) | City | 由布市 | 34,773 | 35,248 | 35,386 | 34,702 | 34,262 | 32,772 | 32,612 | 31932 | → |
- Statistics Bureau Japan.
Population Structure
Further information about the population structure.
| Gender (C 2025) | |
|---|---|
| Males | 513,847 |
| Females | 563,028 |
| Age Groups (C 2020) | |
|---|---|
| 0-17 years | 165,940 |
| 18-64 years | 565,859 |
| 65+ years | 369,192 |
| Age Distribution (C 2020) | |
|---|---|
| 90+ years | 29,708 |
| 80-89 years | 96,561 |
| 70-79 years | 158,206 |
| 60-69 years | 158,192 |
| 50-59 years | 131,525 |
| 40-49 years | 145,256 |
| 30-39 years | 110,789 |
| 20-29 years | 86,776 |
| 10-19 years | 97,890 |
| 0-9 years | 86,088 |
| Citizenship (C 2020) | |
|---|---|
| Japan | 1,098,735 |
| Foreign Citizenship | 10,168 |