Last official estimated population of Rooks County was 5,173 (year 2014)[1]. This was 0.002% of total US population and 0.2% of total Kansas state population. Area of Rooks County is 895.2 mi² (=2318.4 km²), in this year population density was 5.78 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), Rooks County population in 2025 would be 5,151 [0].
Historical population of Rooks 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] -0.12 %/yr
[1890-1900] -0.07 %/yr
[1900-1910] +3.55 %/yr
[1910-1920] -1.23 %/yr
[1920-1930] -0.44 %/yr
[1930-1940] -1.14 %/yr
[1940-1950] +0.62 %/yr
[1950-1960] +0.74 %/yr
[1960-1970] -2.41 %/yr
[1970-1980] -0.85 %/yr
[1980-1990] -1.47 %/yr
[1990-2000] -0.6 %/yr
[2000-2005] -1.2 %/yr
[2005-2010] -0.65 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in Rooks County? Visit this page: Settlements in Rooks County, KS
Population of Rooks County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 156 | 169 | 325 |
| 5 to 9 | 164 | 168 | 332 |
| 10 to 14 | 152 | 180 | 332 |
| 15 to 19 | 163 | 145 | 308 |
| 20 to 24 | 143 | 125 | 268 |
| 25 to 29 | 120 | 143 | 263 |
| 30 to 34 | 159 | 145 | 304 |
| 35 to 39 | 133 | 130 | 263 |
| 40 to 44 | 157 | 116 | 273 |
| 45 to 49 | 140 | 141 | 281 |
| 50 to 54 | 186 | 182 | 368 |
| 55 to 59 | 218 | 219 | 437 |
| 60 to 64 | 173 | 168 | 341 |
| 65 to 69 | 148 | 149 | 297 |
| 70 to 74 | 86 | 120 | 206 |
| 75 to 79 | 102 | 113 | 215 |
| 80 to 84 | 67 | 90 | 157 |
| 85+ | 63 | 122 | 185 |
Rooks 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 | 2498 | 2584 | 5,082 |
| NH | 2455 | 2569 | 5,024 |
| WA | 2464 | 2552 | 5,016 |
| NHWAC | 2429 | 2533 | 4,962 |
| NHWA | 2400 | 2504 | 4,904 |
| H | 75 | 56 | 131 |
| HWAC | 69 | 51 | 120 |
| HWA | 64 | 48 | 112 |
| TOM | 35 | 32 | 67 |
| BAC | 31 | 32 | 63 |
| NHTOM | 30 | 29 | 59 |
| NHBAC | 29 | 30 | 59 |
| IAC | 21 | 21 | 42 |
| AAC | 13 | 21 | 34 |
| NHAAC | 12 | 21 | 33 |
| BA | 13 | 17 | 30 |
| NHIAC | 14 | 15 | 29 |
| NHBA | 13 | 16 | 29 |
| AA | 7 | 14 | 21 |
| NHAA | 7 | 14 | 21 |
| IA | 9 | 9 | 18 |
| HIAC | 7 | 6 | 13 |
| HIA | 6 | 4 | 10 |
| HTOM | 5 | 3 | 8 |
| NHIA | 3 | 5 | 8 |
| NAC | 4 | 1 | 5 |
| NHNAC | 3 | 1 | 4 |
| HBAC | 2 | 2 | 4 |
| NA | 2 | 1 | 3 |
| NHNA | 2 | 1 | 3 |
| HNAC | 1 | 0 | 1 |
| HAAC | 1 | 0 | 1 |
| HBA | 0 | 1 | 1 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Ellis County population
29.8 mi,
179°
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42 mi,
135°
• Norton County
43 mi,
314°
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30.3 mi,
358°
• Smith County
41.7 mi,
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• Osborne County
29.7 mi,
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• Harlan County
57.7 mi,
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• Rush County
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• Trego County
41.2 mi,
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• Graham County
29.7 mi,
271°
[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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