Last official estimated population of Seminole County was 25,450 (year 2014)[1]. This was 0.008% of total US population and 0.7% of total Oklahoma state population. Area of Seminole County is 640.5 mi² (=1658.8 km²), in this year population density was 39.74 p/mi². If population growth rate would be same as in period 2010-2014 (-0.03%/yr), Seminole County population in 2026 would be 25,354 [0].
Historical population of Seminole County for period 1880-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1880-1890] NAN %/yr
[1890-1900] +INF %/yr
[1900-1910] +3.12 %/yr
[1910-1920] +1.78 %/yr
[1920-1930] +12.83 %/yr
[1930-1940] -2.6 %/yr
[1940-1950] -4 %/yr
[1950-1960] -3.64 %/yr
[1960-1970] -1.09 %/yr
[1970-1980] +0.89 %/yr
[1980-1990] -0.78 %/yr
[1990-2000] -0.18 %/yr
[2000-2005] -0.07 %/yr
[2005-2010] +0.48 %/yr
[2010-2014] -0.03 %/yr
Looking for settlements in Seminole County? Visit this page: Settlements in Seminole County, OK
Population of Seminole County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 842 | 815 | 1,657 |
| 5 to 9 | 895 | 795 | 1,690 |
| 10 to 14 | 969 | 983 | 1,952 |
| 15 to 19 | 990 | 870 | 1,860 |
| 20 to 24 | 804 | 788 | 1,592 |
| 25 to 29 | 665 | 650 | 1,315 |
| 30 to 34 | 733 | 770 | 1,503 |
| 35 to 39 | 652 | 742 | 1,394 |
| 40 to 44 | 754 | 734 | 1,488 |
| 45 to 49 | 758 | 790 | 1,548 |
| 50 to 54 | 885 | 938 | 1,823 |
| 55 to 59 | 850 | 855 | 1,705 |
| 60 to 64 | 748 | 813 | 1,561 |
| 65 to 69 | 638 | 691 | 1,329 |
| 70 to 74 | 492 | 633 | 1,125 |
| 75 to 79 | 401 | 419 | 820 |
| 80 to 84 | 214 | 318 | 532 |
| 85+ | 194 | 333 | 527 |
Seminole County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| NH | 11915 | 12372 | 24,287 |
| WAC | 9347 | 9748 | 19,095 |
| NHWAC | 8948 | 9339 | 18,287 |
| WA | 8474 | 8889 | 17,363 |
| NHWA | 8143 | 8540 | 16,683 |
| IAC | 3186 | 3259 | 6,445 |
| NHIAC | 2978 | 3072 | 6,050 |
| IA | 2391 | 2461 | 4,852 |
| NHIA | 2240 | 2324 | 4,564 |
| TOM | 955 | 959 | 1,914 |
| NHTOM | 883 | 897 | 1,780 |
| BAC | 844 | 821 | 1,665 |
| NHBAC | 817 | 797 | 1,614 |
| BA | 615 | 564 | 1,179 |
| NHBA | 603 | 551 | 1,154 |
| H | 569 | 565 | 1,134 |
| HWAC | 399 | 409 | 808 |
| HWA | 331 | 349 | 680 |
| HIAC | 208 | 187 | 395 |
| HIA | 151 | 137 | 288 |
| AAC | 90 | 98 | 188 |
| NHAAC | 80 | 91 | 171 |
| HTOM | 72 | 62 | 134 |
| AA | 39 | 50 | 89 |
| NHAA | 38 | 47 | 85 |
| HBAC | 27 | 24 | 51 |
| NAC | 21 | 23 | 44 |
| NHNAC | 18 | 21 | 39 |
| HBA | 12 | 13 | 25 |
| NA | 10 | 14 | 24 |
| NHNA | 8 | 13 | 21 |
| HAAC | 10 | 7 | 17 |
| HNAC | 3 | 2 | 5 |
| HAA | 1 | 3 | 4 |
| HNA | 2 | 1 | 3 |
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[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Seminole and Creek Nations Oklahoma Notes
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