Last official estimated population of Doniphan County was 7,956 (year 2014)[1]. This was 0.002% of total US population and 0.3% of total Kansas state population. Area of Doniphan County is 398.3 mi² (=1031.5 km²), in this year population density was 19.98 p/mi². If population growth rate would be same as in period 2010-2014 (+0.03%/yr), Doniphan County population in 2026 would be 7,989 [0].
Historical population of Doniphan County for period 1860-2014 [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

[1860-1870] +5.62 %/yr
[1870-1880] +0.2 %/yr
[1880-1890] -0.52 %/yr
[1890-1900] +1.09 %/yr
[1900-1910] -0.44 %/yr
[1910-1920] -0.7 %/yr
[1920-1930] +0.46 %/yr
[1930-1940] -0.83 %/yr
[1940-1950] -2.07 %/yr
[1950-1960] -0.92 %/yr
[1960-1970] -0.5 %/yr
[1970-1980] +0.18 %/yr
[1980-1990] -1.3 %/yr
[1990-2000] +0.14 %/yr
[2000-2005] -0.94 %/yr
[2005-2010] +0.19 %/yr
[2010-2014] +0.03 %/yr
Looking for settlements in Doniphan County? Visit this page: Settlements in Doniphan County, KS
Population of Doniphan County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 234 | 214 | 448 |
| 5 to 9 | 210 | 261 | 471 |
| 10 to 14 | 267 | 228 | 495 |
| 15 to 19 | 376 | 322 | 698 |
| 20 to 24 | 330 | 241 | 571 |
| 25 to 29 | 205 | 218 | 423 |
| 30 to 34 | 238 | 224 | 462 |
| 35 to 39 | 222 | 203 | 425 |
| 40 to 44 | 223 | 221 | 444 |
| 45 to 49 | 206 | 240 | 446 |
| 50 to 54 | 257 | 249 | 506 |
| 55 to 59 | 320 | 280 | 600 |
| 60 to 64 | 265 | 245 | 510 |
| 65 to 69 | 222 | 210 | 432 |
| 70 to 74 | 146 | 163 | 309 |
| 75 to 79 | 116 | 118 | 234 |
| 80 to 84 | 63 | 110 | 173 |
| 85+ | 81 | 146 | 227 |
Doniphan 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 | 3870 | 3784 | 7,654 |
| WAC | 3725 | 3715 | 7,440 |
| WA | 3642 | 3628 | 7,270 |
| NHWAC | 3626 | 3612 | 7,238 |
| NHWA | 3547 | 3532 | 7,079 |
| BAC | 220 | 130 | 350 |
| NHBAC | 215 | 125 | 340 |
| BA | 185 | 79 | 264 |
| NHBA | 182 | 78 | 260 |
| H | 111 | 109 | 220 |
| HWAC | 99 | 103 | 202 |
| IAC | 99 | 93 | 192 |
| HWA | 95 | 96 | 191 |
| TOM | 84 | 92 | 176 |
| NHIAC | 88 | 84 | 172 |
| NHTOM | 80 | 84 | 164 |
| IA | 59 | 58 | 117 |
| NHIA | 50 | 54 | 104 |
| AAC | 20 | 49 | 69 |
| NHAAC | 20 | 49 | 69 |
| AA | 11 | 36 | 47 |
| NHAA | 11 | 36 | 47 |
| HIAC | 11 | 9 | 20 |
| HIA | 9 | 4 | 13 |
| HTOM | 4 | 8 | 12 |
| HBAC | 5 | 5 | 10 |
| HBA | 3 | 1 | 4 |
| NAC | 3 | 0 | 3 |
| NHNAC | 3 | 0 | 3 |
| HNAC | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Platte County population
35 mi,
144°
• Buchanan County
20.1 mi,
116°
• Clinton County
41.8 mi,
107°
• Jefferson County
39.8 mi,
197°
• Andrew County
22.9 mi,
52°
• Atchison County
19.8 mi,
206°
• DeKalb County
39.9 mi,
79°
• Brown County
22.6 mi,
276°
• Richardson County
38.1 mi,
307°
• Holt County
21.6 mi,
349°
[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
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