Last official estimated population of Spencer County was 17,114 (year 2014)[1]. This was 0.005% of total US population and 0.4% of total Kentucky state population. Area of Spencer County is 191.7 mi² (=496.4 km²), in this year population density was 89.29 p/mi². If population growth rate would be same as in period 2010-2014 (+0.08%/yr), Spencer County population in 2025 would be 17,261 [0].
Historical population of Spencer 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] -0.34 %/yr
[1840-1850] +0.39 %/yr
[1850-1860] -1 %/yr
[1860-1870] -0.38 %/yr
[1870-1880] +1.69 %/yr
[1880-1890] -0.41 %/yr
[1890-1900] +0.92 %/yr
[1900-1910] +0.22 %/yr
[1910-1920] +0.28 %/yr
[1920-1930] -1.63 %/yr
[1930-1940] +0.23 %/yr
[1940-1950] -0.93 %/yr
[1950-1960] -0.8 %/yr
[1960-1970] -0.34 %/yr
[1970-1980] +0.78 %/yr
[1980-1990] +1.38 %/yr
[1990-2000] +5.57 %/yr
[2000-2005] +5 %/yr
[2005-2010] +2.71 %/yr
[2010-2014] +0.08 %/yr
Looking for settlements in Spencer County? Visit this page: Settlements in Spencer County, KY
Population of Spencer County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 454 | 470 | 924 |
| 5 to 9 | 648 | 566 | 1,214 |
| 10 to 14 | 657 | 644 | 1,301 |
| 15 to 19 | 615 | 533 | 1,148 |
| 20 to 24 | 492 | 437 | 929 |
| 25 to 29 | 395 | 405 | 800 |
| 30 to 34 | 504 | 567 | 1,071 |
| 35 to 39 | 591 | 579 | 1,170 |
| 40 to 44 | 706 | 728 | 1,434 |
| 45 to 49 | 722 | 723 | 1,445 |
| 50 to 54 | 794 | 782 | 1,576 |
| 55 to 59 | 709 | 672 | 1,381 |
| 60 to 64 | 536 | 547 | 1,083 |
| 65 to 69 | 447 | 456 | 903 |
| 70 to 74 | 303 | 283 | 586 |
| 75 to 79 | 165 | 154 | 319 |
| 80 to 84 | 104 | 114 | 218 |
| 85+ | 70 | 96 | 166 |
Spencer 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 | 8748 | 8600 | 17,348 |
| WAC | 8681 | 8523 | 17,204 |
| WA | 8570 | 8426 | 16,996 |
| NHWAC | 8528 | 8378 | 16,906 |
| NHWA | 8425 | 8287 | 16,712 |
| BAC | 235 | 186 | 421 |
| NHBAC | 228 | 179 | 407 |
| H | 164 | 156 | 320 |
| BA | 170 | 140 | 310 |
| NHBA | 168 | 135 | 303 |
| HWAC | 153 | 145 | 298 |
| HWA | 145 | 139 | 284 |
| TOM | 115 | 98 | 213 |
| NHTOM | 107 | 92 | 199 |
| IAC | 69 | 75 | 144 |
| NHIAC | 56 | 67 | 123 |
| AAC | 36 | 71 | 107 |
| NHAAC | 36 | 69 | 105 |
| AA | 19 | 56 | 75 |
| NHAA | 19 | 54 | 73 |
| IA | 30 | 32 | 62 |
| NHIA | 21 | 28 | 49 |
| HIAC | 13 | 8 | 21 |
| NAC | 13 | 6 | 19 |
| NHNAC | 12 | 6 | 18 |
| HTOM | 8 | 6 | 14 |
| HBAC | 7 | 7 | 14 |
| HIA | 9 | 4 | 13 |
| NA | 8 | 4 | 12 |
| NHNA | 8 | 4 | 12 |
| HBA | 2 | 5 | 7 |
| HAAC | 0 | 2 | 2 |
| HAA | 0 | 2 | 2 |
| HNAC | 1 | 0 | 1 |
| HNA | 0 | 0 | 0 |
• Jefferson County population
21.7 mi, 
301°
• Bullitt County
21.4 mi, 
259°
• Oldham County
27 mi, 
343°
• Franklin County
28.3 mi, 
59°
• Nelson County
17.3 mi, 
207°
• Shelby County
15.6 mi, 
17°
• Woodford County
30.9 mi, 
87°
• Anderson County
18 mi, 94°
• Mercer County
28 mi, 
121°
• Washington County
20.2 mi, 
157°
[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 59 Kentucky Notes
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