Last official estimated population of Knox County was 433,005 (year 2014)[1]. This was 0.136% of total US population and 6.6% of total Tennessee state population. Area of Knox County is 525.9 mi² (=1362 km²), in this year population density was 823.41 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Knox County population in 2024 would be 434,959 [0].
Historical population of Knox 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 %/yr
[1810-1820] +2.51 %/yr
[1820-1830] +1.07 %/yr
[1830-1840] +0.66 %/yr
[1840-1850] +1.96 %/yr
[1850-1860] +1.95 %/yr
[1860-1870] +2.43 %/yr
[1870-1880] +3.04 %/yr
[1880-1890] +4.29 %/yr
[1890-1900] +2.24 %/yr
[1900-1910] +2.4 %/yr
[1910-1920] +1.83 %/yr
[1920-1930] +3.28 %/yr
[1930-1940] +1.36 %/yr
[1940-1950] +2.25 %/yr
[1950-1960] +1.17 %/yr
[1960-1970] +0.98 %/yr
[1970-1980] +1.47 %/yr
[1980-1990] +0.49 %/yr
[1990-2000] +1.3 %/yr
[2000-2005] +1.14 %/yr
[2005-2010] +1.35 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Knox County? Visit this page: Settlements in Knox County, TN
Population of Knox County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 13276 | 12899 | 26,175 |
| 5 to 9 | 13797 | 13029 | 26,826 |
| 10 to 14 | 13771 | 13173 | 26,944 |
| 15 to 19 | 15426 | 14717 | 30,143 |
| 20 to 24 | 20876 | 20412 | 41,288 |
| 25 to 29 | 14372 | 15013 | 29,385 |
| 30 to 34 | 14925 | 15484 | 30,409 |
| 35 to 39 | 13656 | 13974 | 27,630 |
| 40 to 44 | 14341 | 14709 | 29,050 |
| 45 to 49 | 14073 | 14722 | 28,795 |
| 50 to 54 | 15233 | 16004 | 31,237 |
| 55 to 59 | 14249 | 15371 | 29,620 |
| 60 to 64 | 12224 | 13955 | 26,179 |
| 65 to 69 | 10283 | 11732 | 22,015 |
| 70 to 74 | 6997 | 8638 | 15,635 |
| 75 to 79 | 4853 | 6284 | 11,137 |
| 80 to 84 | 3017 | 4940 | 7,957 |
| 85+ | 2611 | 5608 | 8,219 |
Knox 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 | 208923 | 222339 | 431,262 |
| WAC | 192394 | 203245 | 395,639 |
| WA | 188180 | 198922 | 387,102 |
| NHWAC | 184440 | 195872 | 380,312 |
| NHWA | 180600 | 191881 | 372,481 |
| BAC | 21649 | 23782 | 45,431 |
| NHBAC | 20963 | 23142 | 44,105 |
| BA | 19298 | 21274 | 40,572 |
| NHBA | 18793 | 20816 | 39,609 |
| H | 9057 | 8325 | 17,382 |
| HWAC | 7954 | 7373 | 15,327 |
| HWA | 7580 | 7041 | 14,621 |
| AAC | 5969 | 5951 | 11,920 |
| NHAAC | 5779 | 5779 | 11,558 |
| AA | 4879 | 4886 | 9,765 |
| NHAA | 4764 | 4794 | 9,558 |
| TOM | 4464 | 4584 | 9,048 |
| NHTOM | 4056 | 4210 | 8,266 |
| IAC | 2292 | 2175 | 4,467 |
| NHIAC | 1795 | 1751 | 3,546 |
| IA | 873 | 758 | 1,631 |
| HBAC | 686 | 640 | 1,326 |
| NHIA | 574 | 503 | 1,077 |
| HBA | 505 | 458 | 963 |
| HIAC | 497 | 424 | 921 |
| NAC | 445 | 406 | 851 |
| HTOM | 408 | 374 | 782 |
| HIA | 299 | 255 | 554 |
| NHNAC | 271 | 273 | 544 |
| NA | 286 | 240 | 526 |
| HAAC | 190 | 172 | 362 |
| HNAC | 174 | 133 | 307 |
| NHNA | 136 | 135 | 271 |
| HNA | 150 | 105 | 255 |
| HAA | 115 | 92 | 207 |
• Blount County population
21.1 mi, 
177°
• Sevier County
27.1 mi, 
119°
• Anderson County
16.8 mi, 
300°
• Roane County
34.3 mi, 
252°
• Jefferson County
28 mi, 
82°
• Loudon County
27.6 mi, 
230°
• Campbell County
30.8 mi, 
336°
• Claiborne County
38.4 mi, 
23°
• Grainger County
31 mi, 
50°
• Union County
20.9 mi, 15°
[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 23 Tennessee Notes
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