Last official estimated population of Lewis County was 12,152 (year 2014)[1]. This was 0.004% of total US population and 0.2% of total Tennessee state population. Area of Lewis County is 282.5 mi² (=731.6 km²), in this year population density was 43.02 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Lewis County population in 2025 would be 12,127 [0].
Historical population of Lewis County for period 1850-2014 [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
[1850-1860] -6.6 %/yr
[1860-1870] -1.2 %/yr
[1870-1880] +0.94 %/yr
[1880-1890] +1.6 %/yr
[1890-1900] +5.72 %/yr
[1900-1910] +3.08 %/yr
[1910-1920] -0.55 %/yr
[1920-1930] -0.82 %/yr
[1930-1940] +1.07 %/yr
[1940-1950] +0.38 %/yr
[1950-1960] +0.31 %/yr
[1960-1970] +0.76 %/yr
[1970-1980] +3.68 %/yr
[1980-1990] -0.48 %/yr
[1990-2000] +2.11 %/yr
[2000-2005] +0.46 %/yr
[2005-2010] +0.86 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Lewis County? Visit this page: Settlements in Lewis County, TN
Population of Lewis County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 339 | 357 | 696 |
| 5 to 9 | 361 | 336 | 697 |
| 10 to 14 | 404 | 353 | 757 |
| 15 to 19 | 389 | 353 | 742 |
| 20 to 24 | 339 | 315 | 654 |
| 25 to 29 | 291 | 326 | 617 |
| 30 to 34 | 303 | 316 | 619 |
| 35 to 39 | 354 | 344 | 698 |
| 40 to 44 | 385 | 390 | 775 |
| 45 to 49 | 331 | 359 | 690 |
| 50 to 54 | 462 | 430 | 892 |
| 55 to 59 | 456 | 504 | 960 |
| 60 to 64 | 424 | 455 | 879 |
| 65 to 69 | 372 | 386 | 758 |
| 70 to 74 | 265 | 313 | 578 |
| 75 to 79 | 168 | 202 | 370 |
| 80 to 84 | 119 | 178 | 297 |
| 85+ | 65 | 162 | 227 |
Lewis 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 | 5692 | 5948 | 11,640 |
| WAC | 5628 | 5886 | 11,514 |
| WA | 5547 | 5813 | 11,360 |
| NHWAC | 5499 | 5759 | 11,258 |
| NHWA | 5418 | 5688 | 11,106 |
| BAC | 185 | 153 | 338 |
| NHBAC | 184 | 151 | 335 |
| H | 135 | 131 | 266 |
| BA | 143 | 115 | 258 |
| NHBA | 142 | 115 | 257 |
| HWAC | 129 | 127 | 256 |
| HWA | 129 | 125 | 254 |
| TOM | 88 | 75 | 163 |
| NHTOM | 88 | 73 | 161 |
| IAC | 67 | 56 | 123 |
| NHIAC | 63 | 55 | 118 |
| AAC | 34 | 56 | 90 |
| NHAAC | 33 | 53 | 86 |
| AA | 22 | 52 | 74 |
| NHAA | 21 | 49 | 70 |
| IA | 26 | 21 | 47 |
| NHIA | 22 | 20 | 42 |
| NHNAC | 5 | 4 | 9 |
| NAC | 5 | 4 | 9 |
| HIAC | 4 | 1 | 5 |
| HIA | 4 | 1 | 5 |
| NA | 1 | 3 | 4 |
| NHNA | 1 | 3 | 4 |
| HAAC | 1 | 3 | 4 |
| HAA | 1 | 3 | 4 |
| HBAC | 1 | 2 | 3 |
| HTOM | 0 | 2 | 2 |
| HBA | 1 | 0 | 1 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Williamson County population
42.3 mi, 
52°
• Maury County
24.4 mi, 
74°
• Lawrence County
21.7 mi, 
164°
• Marshall County
41.3 mi, 
95°
• Giles County
34.2 mi, 
130°
• Hickman County
19.4 mi, 
4°
• Humphreys County
39.4 mi, 
335°
• Wayne County
26.6 mi, 
223°
• Decatur County
34.9 mi, 
279°
• Perry County
23.1 mi, 
294°
[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 26 Tennessee Notes
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