Last official estimated population of Knox County was 8,668 (year 2014)[1]. This was 0.003% of total US population and 0.5% of total Nebraska state population. Area of Knox County is 1,139.7 mi² (=2951.9 km²), in this year population density was 7.61 p/mi². If population growth rate would be same as in period 2010-2014 (-0.09%/yr), Knox County population in 2024 would be 8,586 [0].
Historical population of Knox 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] +5.56 %/yr
[1870-1880] +30.24 %/yr
[1880-1890] +8.88 %/yr
[1890-1900] +5.27 %/yr
[1900-1910] +2.5 %/yr
[1910-1920] +0.29 %/yr
[1920-1930] +0.11 %/yr
[1930-1940] -1.47 %/yr
[1940-1950] -1.05 %/yr
[1950-1960] -1.08 %/yr
[1960-1970] -1.25 %/yr
[1970-1980] -0.23 %/yr
[1980-1990] -1.79 %/yr
[1990-2000] -0.2 %/yr
[2000-2005] -1.03 %/yr
[2005-2010] -0.44 %/yr
[2010-2014] -0.09 %/yr
Looking for settlements in Knox County? Visit this page: Settlements in Knox County, NE
Population of Knox County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 250 | 271 | 521 |
| 5 to 9 | 288 | 283 | 571 |
| 10 to 14 | 287 | 300 | 587 |
| 15 to 19 | 300 | 273 | 573 |
| 20 to 24 | 179 | 175 | 354 |
| 25 to 29 | 161 | 153 | 314 |
| 30 to 34 | 221 | 173 | 394 |
| 35 to 39 | 189 | 189 | 378 |
| 40 to 44 | 215 | 198 | 413 |
| 45 to 49 | 236 | 236 | 472 |
| 50 to 54 | 310 | 295 | 605 |
| 55 to 59 | 351 | 323 | 674 |
| 60 to 64 | 290 | 317 | 607 |
| 65 to 69 | 275 | 270 | 545 |
| 70 to 74 | 200 | 207 | 407 |
| 75 to 79 | 165 | 232 | 397 |
| 80 to 84 | 128 | 181 | 309 |
| 85+ | 102 | 259 | 361 |
Knox 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 | 4025 | 4240 | 8,265 |
| WAC | 3720 | 3869 | 7,589 |
| NHWAC | 3643 | 3818 | 7,461 |
| WA | 3660 | 3794 | 7,454 |
| NHWA | 3588 | 3745 | 7,333 |
| IAC | 447 | 473 | 920 |
| NHIAC | 400 | 432 | 832 |
| IA | 404 | 427 | 831 |
| NHIA | 361 | 386 | 747 |
| H | 122 | 95 | 217 |
| TOM | 64 | 75 | 139 |
| NHTOM | 59 | 73 | 132 |
| HWAC | 77 | 51 | 128 |
| HWA | 72 | 49 | 121 |
| HIAC | 47 | 41 | 88 |
| HIA | 43 | 41 | 84 |
| AAC | 16 | 37 | 53 |
| BAC | 25 | 27 | 52 |
| NHAAC | 15 | 37 | 52 |
| NHBAC | 25 | 25 | 50 |
| AA | 5 | 27 | 32 |
| NHAA | 5 | 27 | 32 |
| BA | 12 | 8 | 20 |
| NHBA | 12 | 8 | 20 |
| NAC | 3 | 5 | 8 |
| HTOM | 5 | 2 | 7 |
| NA | 2 | 4 | 6 |
| HNAC | 2 | 3 | 5 |
| HNA | 2 | 3 | 5 |
| NHNAC | 1 | 2 | 3 |
| HBAC | 0 | 2 | 2 |
| HAAC | 1 | 0 | 1 |
| NHNA | 0 | 1 | 1 |
| HBA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Yankton County population
36.2 mi, 
44°
• Clay County
50.1 mi, 
67°
• Holt County
47.1 mi, 
255°
• Wayne County
48.8 mi, 
126°
• Cedar County
32.3 mi, 
93°
• Hutchinson County
49 mi, 
8°
• Pierce County
28.9 mi, 
150°
• Bon Homme County
24.3 mi, 
0°
• Antelope County
32.3 mi, 
195°
• Boyd County
48.2 mi, 
291°
[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
1860-70: L'Eau Qui Court Nebraska Notes
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