Last official estimated population of Brown County was 9,982 (year 2014)[1]. This was 0.003% of total US population and 0.3% of total Kansas state population. Area of Brown County is 572.1 mi² (=1481.7 km²), in this year population density was 17.45 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Brown County population in 2025 would be 9,977 [0].
Historical population of Brown 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] +10.1 %/yr
[1870-1880] +6.51 %/yr
[1880-1890] +4.96 %/yr
[1890-1900] +0.73 %/yr
[1900-1910] -0.48 %/yr
[1910-1920] -0.17 %/yr
[1920-1930] -0.19 %/yr
[1930-1940] -1.65 %/yr
[1940-1950] -1.7 %/yr
[1950-1960] -1.02 %/yr
[1960-1970] -1.23 %/yr
[1970-1980] +0.23 %/yr
[1980-1990] -0.71 %/yr
[1990-2000] -0.37 %/yr
[2000-2005] -1.22 %/yr
[2005-2010] -0.21 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Brown County? Visit this page: Settlements in Brown County, KS
Population of Brown County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 353 | 331 | 684 |
| 5 to 9 | 358 | 354 | 712 |
| 10 to 14 | 346 | 353 | 699 |
| 15 to 19 | 314 | 293 | 607 |
| 20 to 24 | 285 | 245 | 530 |
| 25 to 29 | 239 | 247 | 486 |
| 30 to 34 | 284 | 280 | 564 |
| 35 to 39 | 267 | 237 | 504 |
| 40 to 44 | 220 | 264 | 484 |
| 45 to 49 | 289 | 259 | 548 |
| 50 to 54 | 332 | 365 | 697 |
| 55 to 59 | 353 | 412 | 765 |
| 60 to 64 | 336 | 335 | 671 |
| 65 to 69 | 270 | 294 | 564 |
| 70 to 74 | 214 | 220 | 434 |
| 75 to 79 | 123 | 176 | 299 |
| 80 to 84 | 110 | 153 | 263 |
| 85+ | 96 | 208 | 304 |
Brown 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 | 4607 | 4838 | 9,445 |
| WAC | 4247 | 4458 | 8,705 |
| NHWAC | 4138 | 4321 | 8,459 |
| WA | 4096 | 4329 | 8,425 |
| NHWA | 4006 | 4210 | 8,216 |
| IAC | 529 | 543 | 1,072 |
| NHIAC | 457 | 490 | 947 |
| IA | 438 | 473 | 911 |
| NHIA | 378 | 428 | 806 |
| H | 182 | 188 | 370 |
| TOM | 154 | 133 | 287 |
| BAC | 143 | 122 | 265 |
| NHTOM | 135 | 114 | 249 |
| HWAC | 109 | 137 | 246 |
| NHBAC | 124 | 107 | 231 |
| HWA | 90 | 119 | 209 |
| BA | 89 | 64 | 153 |
| NHBA | 76 | 59 | 135 |
| HIAC | 72 | 53 | 125 |
| HIA | 60 | 45 | 105 |
| AAC | 21 | 37 | 58 |
| NHAAC | 20 | 35 | 55 |
| HTOM | 19 | 19 | 38 |
| AA | 8 | 27 | 35 |
| NHAA | 8 | 27 | 35 |
| HBAC | 19 | 15 | 34 |
| HBA | 13 | 5 | 18 |
| NAC | 8 | 4 | 12 |
| NHNAC | 8 | 4 | 12 |
| NHNA | 4 | 0 | 4 |
| NA | 4 | 0 | 4 |
| HAAC | 1 | 2 | 3 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Jefferson County population
41.8 mi, 
165°
• Andrew County
42.1 mi, 
74°
• Atchison County
24.4 mi, 
146°
• Jackson County
31.1 mi, 
202°
• Nemaha County
23.2 mi, 
264°
• Richardson County
22 mi, 
339°
• Doniphan County
22.6 mi, 
96°
• Nemaha County
41.4 mi, 338°
• Holt County
26.3 mi, 
44°
• Pawnee County
41.7 mi, 
301°
[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
See notes 2 and 1 Kansas Notes
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