Last official estimated population of Lafayette County was 33,409 (year 2014)[1]. This was 0.01% of total US population and 0.5% of total Missouri state population. Area of Lafayette County is 638.9 mi² (=1654.9 km²), in this year population density was 52.29 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Lafayette County population in 2026 would be 33,493 [0].
Historical population of Lafayette 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] +8.87 %/yr
[1840-1850] +7.22 %/yr
[1850-1860] +3.91 %/yr
[1860-1870] +1.19 %/yr
[1870-1880] +1.29 %/yr
[1880-1890] +1.62 %/yr
[1890-1900] +0.48 %/yr
[1900-1910] -0.49 %/yr
[1910-1920] -0.05 %/yr
[1920-1930] -0.25 %/yr
[1930-1940] -0.49 %/yr
[1940-1950] -0.97 %/yr
[1950-1960] +0 %/yr
[1960-1970] +0.52 %/yr
[1970-1980] +1.17 %/yr
[1980-1990] +0.39 %/yr
[1990-2000] +0.57 %/yr
[2000-2005] +0.21 %/yr
[2005-2010] +0.06 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Lafayette County? Visit this page: Settlements in Lafayette County, MO
Population of Lafayette County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 996 | 893 | 1,889 |
| 5 to 9 | 1041 | 1062 | 2,103 |
| 10 to 14 | 1103 | 1034 | 2,137 |
| 15 to 19 | 1230 | 1021 | 2,251 |
| 20 to 24 | 1020 | 919 | 1,939 |
| 25 to 29 | 877 | 857 | 1,734 |
| 30 to 34 | 874 | 934 | 1,808 |
| 35 to 39 | 867 | 863 | 1,730 |
| 40 to 44 | 1015 | 1047 | 2,062 |
| 45 to 49 | 1041 | 1096 | 2,137 |
| 50 to 54 | 1269 | 1290 | 2,559 |
| 55 to 59 | 1246 | 1200 | 2,446 |
| 60 to 64 | 1001 | 1041 | 2,042 |
| 65 to 69 | 800 | 893 | 1,693 |
| 70 to 74 | 715 | 749 | 1,464 |
| 75 to 79 | 482 | 537 | 1,019 |
| 80 to 84 | 341 | 456 | 797 |
| 85+ | 303 | 575 | 878 |
Lafayette 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 | 15752 | 16095 | 31,847 |
| WAC | 15578 | 15935 | 31,513 |
| WA | 15251 | 15600 | 30,851 |
| NHWAC | 15156 | 15597 | 30,753 |
| NHWA | 14851 | 15289 | 30,140 |
| BAC | 600 | 496 | 1,096 |
| NHBAC | 571 | 476 | 1,047 |
| H | 469 | 372 | 841 |
| BA | 458 | 337 | 795 |
| NHBA | 436 | 324 | 760 |
| HWAC | 422 | 338 | 760 |
| HWA | 400 | 311 | 711 |
| TOM | 332 | 342 | 674 |
| NHTOM | 308 | 315 | 623 |
| IAC | 229 | 229 | 458 |
| NHIAC | 202 | 199 | 401 |
| AAC | 119 | 130 | 249 |
| NHAAC | 106 | 120 | 226 |
| IA | 84 | 75 | 159 |
| AA | 66 | 89 | 155 |
| NHAA | 63 | 83 | 146 |
| NHIA | 66 | 62 | 128 |
| NAC | 40 | 37 | 77 |
| NHNAC | 36 | 34 | 70 |
| HIAC | 27 | 30 | 57 |
| NA | 30 | 24 | 54 |
| HTOM | 24 | 27 | 51 |
| NHNA | 28 | 22 | 50 |
| HBAC | 29 | 20 | 49 |
| HBA | 22 | 13 | 35 |
| HIA | 18 | 13 | 31 |
| HAAC | 13 | 10 | 23 |
| HAA | 3 | 6 | 9 |
| HNAC | 4 | 3 | 7 |
| HNA | 2 | 2 | 4 |
• Jackson County population
29.3 mi, 
261°
• Clay County
37.3 mi, 
297°
• Cass County
41.6 mi, 
225°
• Johnson County
22.6 mi, 
181°
• Pettis County
36.5 mi, 
130°
• Ray County
19.5 mi, 
328°
• Saline County
32.4 mi, 
81°
• Henry County
47.1 mi, 179°
• Caldwell County
41.9 mi, 
346°
• Carroll County
29.6 mi, 
33°
[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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