Last official estimated population of Smith County was 19,125 (year 2014)[1]. This was 0.006% of total US population and 0.3% of total Tennessee state population. Area of Smith County is 325.4 mi² (=842.7 km²), in this year population density was 58.78 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Smith County population in 2026 would be 19,003 [0].
Historical population of Smith 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] +10.5 %/yr
[1810-1820] +4.2 %/yr
[1820-1830] +1.25 %/yr
[1830-1840] +0.62 %/yr
[1840-1850] -1.39 %/yr
[1850-1860] -1.18 %/yr
[1860-1870] -0.22 %/yr
[1870-1880] +1.08 %/yr
[1880-1890] +0.33 %/yr
[1890-1900] +0.33 %/yr
[1900-1910] -0.25 %/yr
[1910-1920] -0.79 %/yr
[1920-1930] -1.01 %/yr
[1930-1940] +0.43 %/yr
[1940-1950] -1.35 %/yr
[1950-1960] -1.55 %/yr
[1960-1970] +0.37 %/yr
[1970-1980] +1.79 %/yr
[1980-1990] -0.54 %/yr
[1990-2000] +2.27 %/yr
[2000-2005] +0.9 %/yr
[2005-2010] +0.69 %/yr
[2010-2014] -0.05 %/yr
Looking for settlements in Smith County? Visit this page: Settlements in Smith County, TN
Population of Smith County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 586 | 495 | 1,081 |
| 5 to 9 | 603 | 616 | 1,219 |
| 10 to 14 | 704 | 634 | 1,338 |
| 15 to 19 | 620 | 595 | 1,215 |
| 20 to 24 | 579 | 548 | 1,127 |
| 25 to 29 | 536 | 537 | 1,073 |
| 30 to 34 | 561 | 579 | 1,140 |
| 35 to 39 | 508 | 560 | 1,068 |
| 40 to 44 | 588 | 618 | 1,206 |
| 45 to 49 | 692 | 696 | 1,388 |
| 50 to 54 | 806 | 788 | 1,594 |
| 55 to 59 | 700 | 702 | 1,402 |
| 60 to 64 | 611 | 613 | 1,224 |
| 65 to 69 | 538 | 567 | 1,105 |
| 70 to 74 | 364 | 414 | 778 |
| 75 to 79 | 222 | 254 | 476 |
| 80 to 84 | 120 | 190 | 310 |
| 85+ | 72 | 193 | 265 |
Smith 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 | 9131 | 9389 | 18,520 |
| WAC | 9143 | 9295 | 18,438 |
| WA | 9008 | 9177 | 18,185 |
| NHWAC | 8886 | 9101 | 17,987 |
| NHWA | 8760 | 8996 | 17,756 |
| BAC | 264 | 262 | 526 |
| NHBAC | 253 | 255 | 508 |
| H | 279 | 210 | 489 |
| HWAC | 257 | 194 | 451 |
| HWA | 248 | 181 | 429 |
| BA | 195 | 208 | 403 |
| NHBA | 190 | 205 | 395 |
| TOM | 142 | 124 | 266 |
| NHTOM | 131 | 111 | 242 |
| IAC | 102 | 124 | 226 |
| NHIAC | 90 | 106 | 196 |
| IA | 38 | 57 | 95 |
| AAC | 40 | 49 | 89 |
| NHIA | 30 | 47 | 77 |
| NHAAC | 31 | 44 | 75 |
| AA | 23 | 33 | 56 |
| NHAA | 16 | 30 | 46 |
| HIAC | 12 | 18 | 30 |
| HTOM | 11 | 13 | 24 |
| HBAC | 11 | 7 | 18 |
| HIA | 8 | 10 | 18 |
| HAAC | 9 | 5 | 14 |
| HAA | 7 | 3 | 10 |
| HBA | 5 | 3 | 8 |
| NAC | 7 | 0 | 7 |
| NHNAC | 5 | 0 | 5 |
| NA | 4 | 0 | 4 |
| NHNA | 4 | 0 | 4 |
| HNAC | 2 | 0 | 2 |
| HNA | 0 | 0 | 0 |
• Sumner County population
32.5 mi,
297°
• Wilson County
20.8 mi,
249°
• Putnam County
26.1 mi,
107°
• Macon County
19.8 mi,
350°
• DeKalb County
19.5 mi,
162°
• Cannon County
31.6 mi,
192°
• Jackson County
16.4 mi,
65°
• Monroe County
34.1 mi,
21°
• Trousdale County
15.3 mi,
308°
• Clay County
29.8 mi,
47°
[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
*Sumner Tennessee Notes
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