Last official estimated population of Jefferson County was 51,610 (year 2014)[1]. This was 0.016% of total US population and 0.8% of total Tennessee state population. Area of Jefferson County is 314.3 mi² (=814 km²), in this year population density was 164.20 p/mi². If population growth rate would be same as in period 2010-2014 (+0.1%/yr), Jefferson County population in 2024 would be 52,121 [0].
Historical population of Jefferson County for period 1800-2014 [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
[1800-1810] -2.08 %/yr
[1810-1820] +2.05 %/yr
[1820-1830] +2.8 %/yr
[1830-1840] +0.23 %/yr
[1840-1850] +0.9 %/yr
[1850-1860] +1.97 %/yr
[1860-1870] +1.96 %/yr
[1870-1880] -2.04 %/yr
[1880-1890] +0.39 %/yr
[1890-1900] +1.21 %/yr
[1900-1910] -0.46 %/yr
[1910-1920] -0.04 %/yr
[1920-1930] +0.13 %/yr
[1930-1940] +0.39 %/yr
[1940-1950] +0.55 %/yr
[1950-1960] +0.89 %/yr
[1960-1970] +1.5 %/yr
[1970-1980] +2.29 %/yr
[1980-1990] +0.54 %/yr
[1990-2000] +2.99 %/yr
[2000-2005] +1.52 %/yr
[2005-2010] +1.47 %/yr
[2010-2014] +0.1 %/yr
Looking for settlements in Jefferson County? Visit this page: Settlements in Jefferson County, TN
Population of Jefferson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1321 | 1408 | 2,729 |
| 5 to 9 | 1595 | 1415 | 3,010 |
| 10 to 14 | 1590 | 1568 | 3,158 |
| 15 to 19 | 1841 | 1717 | 3,558 |
| 20 to 24 | 1757 | 1702 | 3,459 |
| 25 to 29 | 1363 | 1459 | 2,822 |
| 30 to 34 | 1417 | 1402 | 2,819 |
| 35 to 39 | 1423 | 1423 | 2,846 |
| 40 to 44 | 1672 | 1714 | 3,386 |
| 45 to 49 | 1837 | 1858 | 3,695 |
| 50 to 54 | 1960 | 2012 | 3,972 |
| 55 to 59 | 1854 | 1870 | 3,724 |
| 60 to 64 | 1620 | 1836 | 3,456 |
| 65 to 69 | 1587 | 1809 | 3,396 |
| 70 to 74 | 1353 | 1436 | 2,789 |
| 75 to 79 | 861 | 941 | 1,802 |
| 80 to 84 | 503 | 623 | 1,126 |
| 85+ | 292 | 638 | 930 |
Jefferson 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 |
| WAC | 24861 | 26020 | 50,881 |
| NH | 24786 | 26034 | 50,820 |
| WA | 24529 | 25680 | 50,209 |
| NHWAC | 23906 | 25289 | 49,195 |
| NHWA | 23596 | 24966 | 48,562 |
| H | 1060 | 797 | 1,857 |
| HWAC | 955 | 731 | 1,686 |
| HWA | 933 | 714 | 1,647 |
| BAC | 883 | 714 | 1,597 |
| NHBAC | 830 | 671 | 1,501 |
| BA | 741 | 546 | 1,287 |
| NHBA | 697 | 509 | 1,206 |
| TOM | 348 | 360 | 708 |
| NHTOM | 325 | 342 | 667 |
| IAC | 287 | 250 | 537 |
| NHIAC | 223 | 219 | 442 |
| AAC | 144 | 194 | 338 |
| NHAAC | 134 | 190 | 324 |
| AA | 102 | 147 | 249 |
| NHAA | 95 | 145 | 240 |
| IA | 112 | 89 | 201 |
| NHIA | 60 | 68 | 128 |
| HBAC | 53 | 43 | 96 |
| HIAC | 64 | 31 | 95 |
| HBA | 44 | 37 | 81 |
| HIA | 52 | 21 | 73 |
| NAC | 30 | 25 | 55 |
| NHNAC | 28 | 19 | 47 |
| HTOM | 23 | 18 | 41 |
| NA | 14 | 9 | 23 |
| NHNA | 13 | 4 | 17 |
| HAAC | 10 | 4 | 14 |
| HAA | 7 | 2 | 9 |
| HNAC | 2 | 6 | 8 |
| HNA | 1 | 5 | 6 |
• Knox County population
28 mi, 
262°
• Sevier County
17.5 mi, 
193°
• Greene County
34.3 mi, 
74°
• Hamblen County
15.3 mi, 
39°
• Cocke County
20.2 mi, 
116°
• Claiborne County
33.6 mi, 
338°
• Grainger County
16.3 mi, 
346°
• Union County
27.4 mi, 
306°
• Swain County
33.2 mi, 
182°
• Hancock County
34.8 mi, 
19°
[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 22 Tennessee Notes
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