Last official estimated population of Nowata County was 10,513 (year 2014)[1]. This was 0.003% of total US population and 0.3% of total Oklahoma state population. Area of Nowata County is 580.8 mi² (=1504.2 km²), in this year population density was 18.10 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Nowata County population in 2026 would be 10,444 [0].
Historical population of Nowata 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] +3.13 %/yr
[1910-1920] +1.12 %/yr
[1920-1930] -1.54 %/yr
[1930-1940] +1.49 %/yr
[1940-1950] -2.12 %/yr
[1950-1960] -1.59 %/yr
[1960-1970] -1.04 %/yr
[1970-1980] +1.63 %/yr
[1980-1990] -1.38 %/yr
[1990-2000] +0.56 %/yr
[2000-2005] +0.19 %/yr
[2005-2010] -0.24 %/yr
[2010-2014] -0.05 %/yr
Looking for settlements in Nowata County? Visit this page: Settlements in Nowata County, OK
Population of Nowata County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 300 | 317 | 617 |
| 5 to 9 | 330 | 353 | 683 |
| 10 to 14 | 369 | 336 | 705 |
| 15 to 19 | 350 | 331 | 681 |
| 20 to 24 | 308 | 314 | 622 |
| 25 to 29 | 295 | 264 | 559 |
| 30 to 34 | 302 | 301 | 603 |
| 35 to 39 | 291 | 275 | 566 |
| 40 to 44 | 304 | 274 | 578 |
| 45 to 49 | 317 | 348 | 665 |
| 50 to 54 | 403 | 396 | 799 |
| 55 to 59 | 396 | 402 | 798 |
| 60 to 64 | 318 | 341 | 659 |
| 65 to 69 | 287 | 330 | 617 |
| 70 to 74 | 243 | 268 | 511 |
| 75 to 79 | 178 | 201 | 379 |
| 80 to 84 | 96 | 159 | 255 |
| 85+ | 94 | 133 | 227 |
Nowata 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 | 5045 | 5193 | 10,238 |
| WAC | 4049 | 4183 | 8,232 |
| NHWAC | 3948 | 4066 | 8,014 |
| WA | 3600 | 3685 | 7,285 |
| NHWA | 3508 | 3579 | 7,087 |
| IAC | 1383 | 1475 | 2,858 |
| NHIAC | 1346 | 1440 | 2,786 |
| IA | 980 | 1026 | 2,006 |
| NHIA | 951 | 997 | 1,948 |
| TOM | 464 | 512 | 976 |
| NHTOM | 454 | 500 | 954 |
| BAC | 185 | 174 | 359 |
| NHBAC | 178 | 167 | 345 |
| H | 136 | 150 | 286 |
| BA | 128 | 115 | 243 |
| NHBA | 123 | 112 | 235 |
| HWAC | 101 | 117 | 218 |
| HWA | 92 | 106 | 198 |
| HIAC | 37 | 35 | 72 |
| HIA | 29 | 29 | 58 |
| AAC | 26 | 27 | 53 |
| NHAAC | 25 | 25 | 50 |
| HTOM | 10 | 12 | 22 |
| NAC | 8 | 9 | 17 |
| NHNAC | 8 | 8 | 16 |
| HBAC | 7 | 7 | 14 |
| AA | 6 | 5 | 11 |
| NHAA | 6 | 5 | 11 |
| HBA | 5 | 3 | 8 |
| NHNA | 3 | 0 | 3 |
| NA | 3 | 0 | 3 |
| HAAC | 1 | 2 | 3 |
| HNAC | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
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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
*Cherokee Nation Oklahoma Notes
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