Last official estimated population of Jackson County was 674,920 (year 2014)[1]. This was 0.212% of total US population and 11.1% of total Missouri state population. Area of Jackson County is 616.2 mi² (=1596.1 km²), in this year population density was 1,095.21 p/mi². If population growth rate would be same as in period 2010-2014 (+0.03%/yr), Jackson County population in 2025 would be 677,020 [0].
Historical population of Jackson County for period 1830-2014 [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
[1830-1840] +10.43 %/yr
[1840-1850] +6.28 %/yr
[1850-1860] +5.05 %/yr
[1860-1870] +9.16 %/yr
[1870-1880] +4.11 %/yr
[1880-1890] +6.9 %/yr
[1890-1900] +1.98 %/yr
[1900-1910] +3.8 %/yr
[1910-1920] +2.64 %/yr
[1920-1930] +2.49 %/yr
[1930-1940] +0.16 %/yr
[1940-1950] +1.25 %/yr
[1950-1960] +1.42 %/yr
[1960-1970] +0.5 %/yr
[1970-1980] -0.39 %/yr
[1980-1990] +0.06 %/yr
[1990-2000] +0.34 %/yr
[2000-2005] +0.11 %/yr
[2005-2010] +0.47 %/yr
[2010-2014] +0.03 %/yr
Looking for settlements in Jackson County? Visit this page: Settlements in Jackson County, MO
Population of Jackson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 23750 | 22946 | 46,696 |
| 5 to 9 | 23591 | 22822 | 46,413 |
| 10 to 14 | 22882 | 21916 | 44,798 |
| 15 to 19 | 20715 | 20157 | 40,872 |
| 20 to 24 | 22079 | 23228 | 45,307 |
| 25 to 29 | 26019 | 27038 | 53,057 |
| 30 to 34 | 24660 | 25610 | 50,270 |
| 35 to 39 | 20894 | 21699 | 42,593 |
| 40 to 44 | 20924 | 21772 | 42,696 |
| 45 to 49 | 20910 | 21423 | 42,333 |
| 50 to 54 | 23930 | 25451 | 49,381 |
| 55 to 59 | 22590 | 24313 | 46,903 |
| 60 to 64 | 18412 | 20931 | 39,343 |
| 65 to 69 | 13882 | 16458 | 30,340 |
| 70 to 74 | 9489 | 12031 | 21,520 |
| 75 to 79 | 6549 | 8883 | 15,432 |
| 80 to 84 | 4768 | 7319 | 12,087 |
| 85+ | 4325 | 8825 | 13,150 |
Jackson 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 | 299810 | 323376 | 623,186 |
| WAC | 244466 | 253969 | 498,435 |
| WA | 236137 | 245064 | 481,201 |
| NHWAC | 217101 | 227702 | 444,803 |
| NHWA | 209781 | 219790 | 429,571 |
| BAC | 81480 | 94147 | 175,627 |
| NHBAC | 78935 | 91498 | 170,433 |
| BA | 75766 | 87888 | 163,654 |
| NHBA | 73926 | 85908 | 159,834 |
| H | 30559 | 29446 | 60,005 |
| HWAC | 27365 | 26267 | 53,632 |
| HWA | 26356 | 25274 | 51,630 |
| TOM | 9438 | 10216 | 19,654 |
| NHTOM | 8256 | 9040 | 17,296 |
| AAC | 7863 | 8574 | 16,437 |
| NHAAC | 7454 | 8195 | 15,649 |
| AA | 5937 | 6574 | 12,511 |
| NHAA | 5729 | 6401 | 12,130 |
| IAC | 5401 | 5853 | 11,254 |
| NHIAC | 4000 | 4542 | 8,542 |
| HBAC | 2545 | 2649 | 5,194 |
| IA | 2056 | 2085 | 4,141 |
| HBA | 1840 | 1980 | 3,820 |
| NAC | 1621 | 1627 | 3,248 |
| NHNAC | 1361 | 1374 | 2,735 |
| HIAC | 1401 | 1311 | 2,712 |
| NHIA | 1246 | 1387 | 2,633 |
| HTOM | 1182 | 1176 | 2,358 |
| NA | 1035 | 995 | 2,030 |
| NHNA | 872 | 850 | 1,722 |
| HIA | 810 | 698 | 1,508 |
| HAAC | 409 | 379 | 788 |
| HNAC | 260 | 253 | 513 |
| HAA | 208 | 173 | 381 |
| HNA | 163 | 145 | 308 |
• Johnson County population
27.1 mi, 
251°
• Clay County
21.8 mi, 
348°
• Wyandotte County
23.8 mi, 
288°
• Cass County
24.8 mi, 
181°
• Platte County
34.2 mi, 
319°
• Leavenworth County
39.4 mi, 288°
• Johnson County
33.9 mi, 
122°
• Lafayette County
29.3 mi, 
81°
• Miami County
40.2 mi, 
221°
• Ray County
28 mi, 
41°
[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
*Cooper Missouri Notes
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