Last official estimated population of Pittsburg County was 45,803 (year 2014)[1]. This was 0.014% of total US population and 1.2% of total Oklahoma state population. Area of Pittsburg County is 1,377.8 mi² (=3568.6 km²), in this year population density was 33.24 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Pittsburg County population in 2025 would be 45,710 [0].
Historical population of Pittsburg 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] +2.38 %/yr
[1910-1920] +0.99 %/yr
[1920-1930] -0.35 %/yr
[1930-1940] -0.36 %/yr
[1940-1950] -1.76 %/yr
[1950-1960] -1.76 %/yr
[1960-1970] +0.88 %/yr
[1970-1980] +0.77 %/yr
[1980-1990] +0.1 %/yr
[1990-2000] +0.71 %/yr
[2000-2005] +0.21 %/yr
[2005-2010] +0.63 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Pittsburg County? Visit this page: Settlements in Pittsburg County, OK
Population of Pittsburg County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1435 | 1360 | 2,795 |
| 5 to 9 | 1415 | 1414 | 2,829 |
| 10 to 14 | 1372 | 1309 | 2,681 |
| 15 to 19 | 1273 | 1233 | 2,506 |
| 20 to 24 | 1437 | 1286 | 2,723 |
| 25 to 29 | 1688 | 1250 | 2,938 |
| 30 to 34 | 1593 | 1320 | 2,913 |
| 35 to 39 | 1468 | 1168 | 2,636 |
| 40 to 44 | 1375 | 1183 | 2,558 |
| 45 to 49 | 1489 | 1280 | 2,769 |
| 50 to 54 | 1624 | 1581 | 3,205 |
| 55 to 59 | 1456 | 1581 | 3,037 |
| 60 to 64 | 1483 | 1462 | 2,945 |
| 65 to 69 | 1213 | 1331 | 2,544 |
| 70 to 74 | 946 | 1152 | 2,098 |
| 75 to 79 | 627 | 812 | 1,439 |
| 80 to 84 | 421 | 587 | 1,008 |
| 85+ | 361 | 641 | 1,002 |
Pittsburg 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 | 21505 | 21077 | 42,582 |
| WAC | 18035 | 17992 | 36,027 |
| NHWAC | 17140 | 17318 | 34,458 |
| WA | 16435 | 16295 | 32,730 |
| NHWA | 15628 | 15680 | 31,308 |
| IAC | 4846 | 4776 | 9,622 |
| NHIAC | 4549 | 4560 | 9,109 |
| IA | 3349 | 3174 | 6,523 |
| NHIA | 3129 | 3008 | 6,137 |
| TOM | 1693 | 1794 | 3,487 |
| NHTOM | 1599 | 1732 | 3,331 |
| BAC | 1339 | 792 | 2,131 |
| H | 1171 | 873 | 2,044 |
| NHBAC | 1283 | 756 | 2,039 |
| BA | 1092 | 535 | 1,627 |
| HWAC | 895 | 674 | 1,569 |
| NHBA | 1053 | 511 | 1,564 |
| HWA | 807 | 615 | 1,422 |
| HIAC | 297 | 216 | 513 |
| HIA | 220 | 166 | 386 |
| AAC | 158 | 208 | 366 |
| NHAAC | 144 | 199 | 343 |
| AA | 90 | 136 | 226 |
| NHAA | 81 | 131 | 212 |
| HTOM | 94 | 62 | 156 |
| HBAC | 56 | 36 | 92 |
| NAC | 44 | 33 | 77 |
| NHNAC | 38 | 32 | 70 |
| HBA | 39 | 24 | 63 |
| NA | 17 | 16 | 33 |
| NHNA | 15 | 15 | 30 |
| HAAC | 14 | 9 | 23 |
| HAA | 9 | 5 | 14 |
| HNAC | 6 | 1 | 7 |
| HNA | 2 | 1 | 3 |
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288°
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30.9 mi,
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• Hughes County
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• Haskell County
41.9 mi,
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49.7 mi,
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• Latimer County
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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
*Choctaw Nation Oklahoma Notes
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