Last official estimated population of Coffey County was 8,591 (year 2014)[1]. This was 0.003% of total US population and 0.3% of total Kansas state population. Area of Coffey County is 654.1 mi² (=1694.1 km²), in this year population density was 13.13 p/mi². If population growth rate would be same as in period 2010-2014 (-0.03%/yr), Coffey County population in 2026 would be 8,561 [0].
Historical population of Coffey 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] +8.11 %/yr
[1870-1880] +6.31 %/yr
[1880-1890] +3.32 %/yr
[1890-1900] +0.49 %/yr
[1900-1910] -0.9 %/yr
[1910-1920] -0.64 %/yr
[1920-1930] -0.43 %/yr
[1930-1940] -1.06 %/yr
[1940-1950] -1.64 %/yr
[1950-1960] -2.12 %/yr
[1960-1970] -1.27 %/yr
[1970-1980] +2.39 %/yr
[1980-1990] -1.08 %/yr
[1990-2000] +0.54 %/yr
[2000-2005] -0.57 %/yr
[2005-2010] -0.05 %/yr
[2010-2014] -0.03 %/yr
Looking for settlements in Coffey County? Visit this page: Settlements in Coffey County, KS
Population of Coffey County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 225 | 172 | 397 |
| 5 to 9 | 266 | 255 | 521 |
| 10 to 14 | 287 | 288 | 575 |
| 15 to 19 | 308 | 283 | 591 |
| 20 to 24 | 226 | 195 | 421 |
| 25 to 29 | 215 | 205 | 420 |
| 30 to 34 | 227 | 238 | 465 |
| 35 to 39 | 210 | 214 | 424 |
| 40 to 44 | 232 | 251 | 483 |
| 45 to 49 | 265 | 269 | 534 |
| 50 to 54 | 329 | 347 | 676 |
| 55 to 59 | 354 | 337 | 691 |
| 60 to 64 | 303 | 301 | 604 |
| 65 to 69 | 252 | 250 | 502 |
| 70 to 74 | 200 | 217 | 417 |
| 75 to 79 | 134 | 154 | 288 |
| 80 to 84 | 83 | 120 | 203 |
| 85+ | 72 | 149 | 221 |
Coffey 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 | 4101 | 4140 | 8,241 |
| NH | 4064 | 4133 | 8,197 |
| WA | 4049 | 4072 | 8,121 |
| NHWAC | 3983 | 4031 | 8,014 |
| NHWA | 3937 | 3970 | 7,907 |
| H | 124 | 112 | 236 |
| HWAC | 118 | 109 | 227 |
| HWA | 112 | 102 | 214 |
| IAC | 61 | 73 | 134 |
| TOM | 55 | 71 | 126 |
| NHIAC | 53 | 67 | 120 |
| NHTOM | 48 | 64 | 112 |
| BAC | 47 | 63 | 110 |
| NHBAC | 43 | 60 | 103 |
| AAC | 31 | 41 | 72 |
| NHAAC | 30 | 40 | 70 |
| BA | 32 | 36 | 68 |
| IA | 32 | 36 | 68 |
| NHBA | 32 | 35 | 67 |
| NHIA | 28 | 35 | 63 |
| AA | 20 | 30 | 50 |
| NHAA | 19 | 29 | 48 |
| HIAC | 8 | 6 | 14 |
| HTOM | 7 | 7 | 14 |
| HBAC | 4 | 3 | 7 |
| NAC | 3 | 3 | 6 |
| NHNAC | 3 | 3 | 6 |
| HIA | 4 | 1 | 5 |
| HAAC | 1 | 1 | 2 |
| HAA | 1 | 1 | 2 |
| HBA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Lyon County population
27.9 mi,
302°
• Franklin County
33 mi,
47°
• Osage County
28.5 mi,
2°
• Allen County
33.7 mi,
136°
• Linn County
48 mi,
91°
• Wilson County
46.8 mi,
181°
• Anderson County
23.8 mi,
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• Greenwood County
37.2 mi,
228°
• Woodson County
24.1 mi,
183°
• Chase County
47.1 mi,
275°
[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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