Last official estimated population of Washita County was 11,595 (year 2014)[1]. This was 0.004% of total US population and 0.3% of total Oklahoma state population. Area of Washita County is 1,008.8 mi² (=2612.8 km²), in this year population density was 11.49 p/mi². If population growth rate would be same as in period 2010-2014 (-0.07%/yr), Washita County population in 2026 would be 11,494 [0].
Historical population of Washita 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] +INF %/yr
[1890-1900] +3.91 %/yr
[1900-1910] +1.3 %/yr
[1910-1920] -1.18 %/yr
[1920-1930] +2.84 %/yr
[1930-1940] -2.75 %/yr
[1940-1950] -2.3 %/yr
[1950-1960] +0.26 %/yr
[1960-1970] -3.93 %/yr
[1970-1980] +1.29 %/yr
[1980-1990] -1.86 %/yr
[1990-2000] +0.06 %/yr
[2000-2005] -0.49 %/yr
[2005-2010] +0.7 %/yr
[2010-2014] -0.07 %/yr
Looking for settlements in Washita County? Visit this page: Settlements in Washita County, OK
Population of Washita County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 448 | 322 | 770 |
| 5 to 9 | 450 | 387 | 837 |
| 10 to 14 | 419 | 430 | 849 |
| 15 to 19 | 377 | 388 | 765 |
| 20 to 24 | 337 | 284 | 621 |
| 25 to 29 | 340 | 366 | 706 |
| 30 to 34 | 395 | 384 | 779 |
| 35 to 39 | 354 | 325 | 679 |
| 40 to 44 | 307 | 297 | 604 |
| 45 to 49 | 336 | 302 | 638 |
| 50 to 54 | 426 | 423 | 849 |
| 55 to 59 | 450 | 419 | 869 |
| 60 to 64 | 326 | 344 | 670 |
| 65 to 69 | 256 | 283 | 539 |
| 70 to 74 | 197 | 249 | 446 |
| 75 to 79 | 168 | 180 | 348 |
| 80 to 84 | 109 | 153 | 262 |
| 85+ | 97 | 219 | 316 |
Washita 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 |
| WAC | 5456 | 5440 | 10,896 |
| WA | 5272 | 5294 | 10,566 |
| NH | 5217 | 5222 | 10,439 |
| NHWAC | 4991 | 4989 | 9,980 |
| NHWA | 4820 | 4867 | 9,687 |
| H | 575 | 533 | 1,108 |
| HWAC | 465 | 451 | 916 |
| HWA | 452 | 427 | 879 |
| IAC | 362 | 333 | 695 |
| NHIAC | 270 | 257 | 527 |
| IA | 234 | 214 | 448 |
| TOM | 189 | 161 | 350 |
| NHTOM | 174 | 137 | 311 |
| NHIA | 150 | 157 | 307 |
| BAC | 138 | 107 | 245 |
| NHBAC | 116 | 82 | 198 |
| HIAC | 92 | 76 | 168 |
| HIA | 84 | 57 | 141 |
| BA | 82 | 58 | 140 |
| NHBA | 66 | 39 | 105 |
| AAC | 26 | 34 | 60 |
| HBAC | 22 | 25 | 47 |
| NHAAC | 15 | 29 | 44 |
| AA | 14 | 26 | 40 |
| HTOM | 15 | 24 | 39 |
| HBA | 16 | 19 | 35 |
| NHAA | 6 | 21 | 27 |
| HAAC | 11 | 5 | 16 |
| HAA | 8 | 5 | 13 |
| NAC | 2 | 6 | 8 |
| NHNAC | 2 | 5 | 7 |
| NA | 1 | 2 | 3 |
| NHNA | 1 | 1 | 2 |
| HNAC | 0 | 1 | 1 |
| HNA | 0 | 1 | 1 |
• Comanche County population
52.2 mi, 
146°
• Caddo County
35.5 mi, 
103°
• Custer County
24.6 mi, 
359°
• Jackson County
53.6 mi, 
206°
• Beckham County
39.4 mi, 
268°
• Blaine County
51.5 mi, 
37°
• Kiowa County
25.4 mi, 
178°
• Greer County
40.1 mi, 
232°
• Dewey County
47.6 mi, 358°
• Roger Mills County
51.2 mi, 
304°
[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
*Cheyenne and Arapaho Reservation Oklahoma Notes
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