Last official estimated population of Johnson County was 545,666 (year 2014)[1]. This was 0.171% of total US population and 18.7% of total Kansas state population. Area of Johnson County is 479.9 mi² (=1242.9 km²), in this year population density was 1,137.05 p/mi². If population growth rate would be same as in period 2010-2014 (+0.07%/yr), Johnson County population in 2026 would be 550,151 [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] +12.11 %/yr
[1870-1880] +2.1 %/yr
[1880-1890] +0.31 %/yr
[1890-1900] +0.41 %/yr
[1900-1910] +0.1 %/yr
[1910-1920] +0.01 %/yr
[1920-1930] +4.03 %/yr
[1930-1940] +2.06 %/yr
[1940-1950] +6.54 %/yr
[1950-1960] +8.64 %/yr
[1960-1970] +4.23 %/yr
[1970-1980] +2.19 %/yr
[1980-1990] +2.77 %/yr
[1990-2000] +2.43 %/yr
[2000-2005] +2.24 %/yr
[2005-2010] +1.53 %/yr
[2010-2014] +0.07 %/yr
Looking for settlements in Johnson County? Visit this page: Settlements in Johnson County, KS
Population of Johnson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 19668 | 18812 | 38,480 |
| 5 to 9 | 21054 | 19912 | 40,966 |
| 10 to 14 | 21341 | 20405 | 41,746 |
| 15 to 19 | 19115 | 17976 | 37,091 |
| 20 to 24 | 16241 | 15816 | 32,057 |
| 25 to 29 | 18517 | 18891 | 37,408 |
| 30 to 34 | 21481 | 21705 | 43,186 |
| 35 to 39 | 19915 | 20122 | 40,037 |
| 40 to 44 | 19737 | 19985 | 39,722 |
| 45 to 49 | 19056 | 19660 | 38,716 |
| 50 to 54 | 19948 | 21265 | 41,213 |
| 55 to 59 | 18115 | 20013 | 38,128 |
| 60 to 64 | 15442 | 17399 | 32,841 |
| 65 to 69 | 12061 | 13297 | 25,358 |
| 70 to 74 | 7413 | 8879 | 16,292 |
| 75 to 79 | 4960 | 6412 | 11,372 |
| 80 to 84 | 3556 | 5119 | 8,675 |
| 85+ | 3707 | 7277 | 10,984 |
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 |
| NH | 259764 | 271916 | 531,680 |
| WAC | 252292 | 263201 | 515,493 |
| WA | 245965 | 256556 | 502,521 |
| NHWAC | 231924 | 243364 | 475,288 |
| NHWA | 226211 | 237393 | 463,604 |
| H | 21563 | 21029 | 42,592 |
| HWAC | 20368 | 19837 | 40,205 |
| HWA | 19754 | 19163 | 38,917 |
| BAC | 17225 | 17401 | 34,626 |
| NHBAC | 16352 | 16437 | 32,789 |
| AAC | 15391 | 16199 | 31,590 |
| NHAAC | 15088 | 15899 | 30,987 |
| BA | 14261 | 14233 | 28,494 |
| NHBA | 13671 | 13600 | 27,271 |
| AA | 12991 | 13759 | 26,750 |
| NHAA | 12875 | 13656 | 26,531 |
| TOM | 6720 | 7031 | 13,751 |
| NHTOM | 6051 | 6304 | 12,355 |
| IAC | 3262 | 3378 | 6,640 |
| NHIAC | 2557 | 2682 | 5,239 |
| IA | 1254 | 1266 | 2,520 |
| HBAC | 873 | 964 | 1,837 |
| NHIA | 862 | 885 | 1,747 |
| HIAC | 705 | 696 | 1,401 |
| HTOM | 669 | 727 | 1,396 |
| HBA | 590 | 633 | 1,223 |
| HIA | 392 | 381 | 773 |
| NAC | 394 | 378 | 772 |
| NHNAC | 313 | 319 | 632 |
| HAAC | 303 | 300 | 603 |
| NA | 136 | 100 | 236 |
| HAA | 116 | 103 | 219 |
| NHNA | 94 | 78 | 172 |
| HNAC | 81 | 59 | 140 |
| HNA | 42 | 22 | 64 |
• Jackson County population
27.1 mi, 
71°
• Clay County
36.8 mi, 
35°
• Wyandotte County
16.3 mi, 
11°
• Douglas County
25.2 mi, 
271°
• Cass County
30.1 mi, 
122°
• Platte County
34.3 mi, 5°
• Leavenworth County
24.1 mi, 
331°
• Miami County
21.9 mi, 
181°
• Franklin County
33.4 mi, 
227°
• Jefferson County
38.5 mi, 
309°
[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
Page generated in 0.008 seconds© 2016 population.us | Terms of use | Contact
Population.us
