Last official estimated population of Simpson County was 17,337 (year 2014)[1]. This was 0.005% of total US population and 0.4% of total Kentucky state population. Area of Simpson County is 236.5 mi² (=612.4 km²), in this year population density was 73.32 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Simpson County population in 2024 would be 17,362 [0].
Historical population of Simpson County for period 1820-2014 [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
[1820-1830] +1.83 %/yr
[1830-1840] +1.18 %/yr
[1840-1850] +1.69 %/yr
[1850-1860] +0.52 %/yr
[1860-1870] +1.63 %/yr
[1870-1880] +1.06 %/yr
[1880-1890] +0.22 %/yr
[1890-1900] +0.67 %/yr
[1900-1910] -0.14 %/yr
[1910-1920] -0.27 %/yr
[1920-1930] +0.17 %/yr
[1930-1940] +0.36 %/yr
[1940-1950] -0.06 %/yr
[1950-1960] -0.11 %/yr
[1960-1970] +1.23 %/yr
[1970-1980] +1.18 %/yr
[1980-1990] +0.32 %/yr
[1990-2000] +0.81 %/yr
[2000-2005] +0.71 %/yr
[2005-2010] +0.38 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Simpson County? Visit this page: Settlements in Simpson County, KY
Population of Simpson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 594 | 537 | 1,131 |
| 5 to 9 | 619 | 580 | 1,199 |
| 10 to 14 | 624 | 603 | 1,227 |
| 15 to 19 | 544 | 568 | 1,112 |
| 20 to 24 | 599 | 523 | 1,122 |
| 25 to 29 | 529 | 526 | 1,055 |
| 30 to 34 | 490 | 536 | 1,026 |
| 35 to 39 | 548 | 546 | 1,094 |
| 40 to 44 | 580 | 565 | 1,145 |
| 45 to 49 | 602 | 593 | 1,195 |
| 50 to 54 | 644 | 688 | 1,332 |
| 55 to 59 | 613 | 663 | 1,276 |
| 60 to 64 | 513 | 575 | 1,088 |
| 65 to 69 | 452 | 506 | 958 |
| 70 to 74 | 332 | 403 | 735 |
| 75 to 79 | 202 | 295 | 497 |
| 80 to 84 | 142 | 195 | 337 |
| 85+ | 95 | 202 | 297 |
Simpson 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 | 8518 | 8958 | 17,476 |
| WAC | 7729 | 8115 | 15,844 |
| NHWAC | 7551 | 7990 | 15,541 |
| WA | 7554 | 7946 | 15,500 |
| NHWA | 7385 | 7822 | 15,207 |
| BAC | 1002 | 963 | 1,965 |
| NHBAC | 980 | 947 | 1,927 |
| BA | 877 | 857 | 1,734 |
| NHBA | 861 | 842 | 1,703 |
| TOM | 184 | 171 | 355 |
| H | 204 | 146 | 350 |
| NHTOM | 175 | 170 | 345 |
| HWAC | 178 | 125 | 303 |
| HWA | 169 | 124 | 293 |
| AAC | 89 | 119 | 208 |
| NHAAC | 80 | 117 | 197 |
| AA | 75 | 100 | 175 |
| NHAA | 67 | 98 | 165 |
| IAC | 82 | 79 | 161 |
| NHIAC | 76 | 75 | 151 |
| IA | 27 | 29 | 56 |
| NHIA | 25 | 25 | 50 |
| HBAC | 22 | 16 | 38 |
| HBA | 16 | 15 | 31 |
| NAC | 9 | 5 | 14 |
| NHNAC | 9 | 5 | 14 |
| HAAC | 9 | 2 | 11 |
| HTOM | 9 | 1 | 10 |
| HAA | 8 | 2 | 10 |
| HIAC | 6 | 4 | 10 |
| NA | 5 | 1 | 6 |
| NHNA | 5 | 1 | 6 |
| HIA | 2 | 4 | 6 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Sumner County population
19.7 mi, 
159°
• Warren County
19.6 mi, 
26°
• Robertson County
21.7 mi, 
227°
• Logan County
18.5 mi, 
296°
• Macon County
35.1 mi, 
113°
• Allen County
21.6 mi, 
88°
• Butler County
32.7 mi, 
350°
• Todd County
34 mi, 
281°
• Edmonson County
39.2 mi, 30°
• Trousdale County
33.7 mi, 
135°
[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
See note 58 Kentucky Notes
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