Last official estimated population of Roger Mills County was 3,636 (year 2014)[1]. This was 0.001% of total US population and 0.1% of total Oklahoma state population. Area of Roger Mills County is 1,146.4 mi² (=2969.2 km²), in this year population density was 3.17 p/mi². If population growth rate would be same as in period 2010-2014 (-0.08%/yr), Roger Mills County population in 2026 would be 3,603 [0].
Historical population of Roger Mills 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] +7.9 %/yr
[1900-1910] -0.29 %/yr
[1910-1920] -1.88 %/yr
[1920-1930] +2.9 %/yr
[1930-1940] -2.73 %/yr
[1940-1950] -3.66 %/yr
[1950-1960] -3.67 %/yr
[1960-1970] -1.33 %/yr
[1970-1980] +0.75 %/yr
[1980-1990] -1.45 %/yr
[1990-2000] -1.87 %/yr
[2000-2005] -0.28 %/yr
[2005-2010] +1.5 %/yr
[2010-2014] -0.08 %/yr
Looking for settlements in Roger Mills County? Visit this page: Settlements in Roger Mills County, OK
Population of Roger Mills County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 146 | 101 | 247 |
| 5 to 9 | 144 | 156 | 300 |
| 10 to 14 | 141 | 144 | 285 |
| 15 to 19 | 99 | 102 | 201 |
| 20 to 24 | 91 | 83 | 174 |
| 25 to 29 | 102 | 90 | 192 |
| 30 to 34 | 130 | 135 | 265 |
| 35 to 39 | 111 | 99 | 210 |
| 40 to 44 | 112 | 94 | 206 |
| 45 to 49 | 116 | 102 | 218 |
| 50 to 54 | 121 | 126 | 247 |
| 55 to 59 | 147 | 126 | 273 |
| 60 to 64 | 132 | 124 | 256 |
| 65 to 69 | 103 | 111 | 214 |
| 70 to 74 | 70 | 85 | 155 |
| 75 to 79 | 56 | 90 | 146 |
| 80 to 84 | 40 | 48 | 88 |
| 85+ | 39 | 45 | 84 |
Roger Mills 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 | 1757 | 1743 | 3,500 |
| WAC | 1753 | 1708 | 3,461 |
| WA | 1715 | 1668 | 3,383 |
| NHWAC | 1640 | 1609 | 3,249 |
| NHWA | 1603 | 1572 | 3,175 |
| IAC | 144 | 160 | 304 |
| H | 143 | 118 | 261 |
| NHIAC | 117 | 140 | 257 |
| IA | 119 | 130 | 249 |
| HWAC | 113 | 99 | 212 |
| HWA | 112 | 96 | 208 |
| NHIA | 92 | 113 | 205 |
| TOM | 45 | 43 | 88 |
| NHTOM | 44 | 40 | 84 |
| BAC | 33 | 19 | 52 |
| NHBAC | 33 | 18 | 51 |
| HIAC | 27 | 20 | 47 |
| HIA | 27 | 17 | 44 |
| AAC | 14 | 16 | 30 |
| NHAAC | 11 | 15 | 26 |
| BA | 12 | 9 | 21 |
| NHBA | 12 | 8 | 20 |
| AA | 7 | 10 | 17 |
| NHAA | 5 | 9 | 14 |
| NAC | 3 | 2 | 5 |
| HAAC | 3 | 1 | 4 |
| NHNAC | 2 | 2 | 4 |
| HTOM | 1 | 3 | 4 |
| NA | 2 | 1 | 3 |
| HAA | 2 | 1 | 3 |
| NHNA | 1 | 1 | 2 |
| HNAC | 1 | 0 | 1 |
| HNA | 1 | 0 | 1 |
| HBA | 0 | 1 | 1 |
| HBAC | 0 | 1 | 1 |
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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
*Cheyenne and Arapaho Reservation Oklahoma Notes
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