Last official estimated population of Johnson County was 5,216 (year 2014)[1]. This was 0.002% of total US population and 0.3% of total Nebraska state population. Area of Johnson County is 376.7 mi² (=975.7 km²), in this year population density was 13.85 p/mi². If population growth rate would be same as in period 2010-2014 (-0%/yr), Johnson County population in 2026 would be 5,213 [0].
Historical population of Johnson 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] +20.57 %/yr
[1870-1880] +8.28 %/yr
[1880-1890] +3.13 %/yr
[1890-1900] +0.81 %/yr
[1900-1910] -0.94 %/yr
[1910-1920] -1.3 %/yr
[1920-1930] +0.24 %/yr
[1930-1940] -0.55 %/yr
[1940-1950] -1.76 %/yr
[1950-1960] -1.43 %/yr
[1960-1970] -0.89 %/yr
[1970-1980] -0.83 %/yr
[1980-1990] -1.22 %/yr
[1990-2000] -0.4 %/yr
[2000-2005] +3.21 %/yr
[2005-2010] -0.15 %/yr
[2010-2014] -0 %/yr
Looking for settlements in Johnson County? Visit this page: Settlements in Johnson County, NE
Population of Johnson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 126 | 122 | 248 |
| 5 to 9 | 141 | 148 | 289 |
| 10 to 14 | 169 | 133 | 302 |
| 15 to 19 | 140 | 136 | 276 |
| 20 to 24 | 220 | 90 | 310 |
| 25 to 29 | 232 | 79 | 311 |
| 30 to 34 | 301 | 100 | 401 |
| 35 to 39 | 265 | 118 | 383 |
| 40 to 44 | 206 | 98 | 304 |
| 45 to 49 | 226 | 113 | 339 |
| 50 to 54 | 259 | 174 | 433 |
| 55 to 59 | 227 | 175 | 402 |
| 60 to 64 | 175 | 135 | 310 |
| 65 to 69 | 135 | 113 | 248 |
| 70 to 74 | 81 | 96 | 177 |
| 75 to 79 | 87 | 84 | 171 |
| 80 to 84 | 41 | 75 | 116 |
| 85+ | 53 | 112 | 165 |
Johnson 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 | 2669 | 2037 | 4,706 |
| WA | 2649 | 2022 | 4,671 |
| NH | 2737 | 1905 | 4,642 |
| NHWAC | 2330 | 1853 | 4,183 |
| NHWA | 2317 | 1845 | 4,162 |
| H | 347 | 196 | 543 |
| HWAC | 339 | 184 | 523 |
| HWA | 332 | 177 | 509 |
| BAC | 326 | 12 | 338 |
| NHBAC | 320 | 10 | 330 |
| BA | 314 | 7 | 321 |
| NHBA | 311 | 6 | 317 |
| AAC | 40 | 48 | 88 |
| IAC | 69 | 16 | 85 |
| AA | 37 | 48 | 85 |
| NHAAC | 39 | 44 | 83 |
| NHAA | 37 | 44 | 81 |
| IA | 61 | 9 | 70 |
| NHIAC | 61 | 4 | 65 |
| NHIA | 56 | 2 | 58 |
| TOM | 23 | 15 | 38 |
| NHTOM | 16 | 8 | 24 |
| HIAC | 8 | 12 | 20 |
| HTOM | 7 | 7 | 14 |
| HIA | 5 | 7 | 12 |
| HBAC | 6 | 2 | 8 |
| NAC | 3 | 3 | 6 |
| NHNAC | 3 | 2 | 5 |
| HAAC | 1 | 4 | 5 |
| HBA | 3 | 1 | 4 |
| HAA | 0 | 4 | 4 |
| HNAC | 0 | 1 | 1 |
| NHNA | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Lancaster County population
34.8 mi, 
320°
• Cass County
36.2 mi, 
10°
• Gage County
24 mi, 
246°
• Otoe County
18.2 mi, 
22°
• Nemaha County
43.9 mi, 
161°
• Richardson County
34.4 mi, 
123°
• Fremont County
42.4 mi, 
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• Nemaha County
21.7 mi, 
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• Atchison County
43.6 mi, 86°
• Pawnee County
17.8 mi, 
176°
[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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