Last official estimated population of Obion County was 31,814 (year 2014)[1]. This was 0.01% of total US population and 0.5% of total Tennessee state population. Area of Obion County is 555.5 mi² (=1438.8 km²), in this year population density was 57.27 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Obion County population in 2025 would be 31,833 [0].
Historical population of Obion 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] +8.65 %/yr
[1840-1850] +4.72 %/yr
[1850-1860] +5.32 %/yr
[1860-1870] +1.97 %/yr
[1870-1880] +3.93 %/yr
[1880-1890] +1.76 %/yr
[1890-1900] +0.37 %/yr
[1900-1910] +0.57 %/yr
[1910-1920] -0.53 %/yr
[1920-1930] +0.24 %/yr
[1930-1940] +0.63 %/yr
[1940-1950] -0.64 %/yr
[1950-1960] -0.75 %/yr
[1960-1970] +1.05 %/yr
[1970-1980] +0.91 %/yr
[1980-1990] -0.33 %/yr
[1990-2000] +0.23 %/yr
[2000-2005] -0.18 %/yr
[2005-2010] -0.23 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Obion County? Visit this page: Settlements in Obion County, TN
Population of Obion County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 940 | 846 | 1,786 |
| 5 to 9 | 908 | 876 | 1,784 |
| 10 to 14 | 1001 | 1030 | 2,031 |
| 15 to 19 | 963 | 956 | 1,919 |
| 20 to 24 | 919 | 864 | 1,783 |
| 25 to 29 | 817 | 847 | 1,664 |
| 30 to 34 | 871 | 894 | 1,765 |
| 35 to 39 | 881 | 918 | 1,799 |
| 40 to 44 | 1016 | 1016 | 2,032 |
| 45 to 49 | 982 | 1011 | 1,993 |
| 50 to 54 | 1070 | 1097 | 2,167 |
| 55 to 59 | 1093 | 1206 | 2,299 |
| 60 to 64 | 984 | 1095 | 2,079 |
| 65 to 69 | 925 | 1004 | 1,929 |
| 70 to 74 | 667 | 829 | 1,496 |
| 75 to 79 | 476 | 575 | 1,051 |
| 80 to 84 | 270 | 450 | 720 |
| 85+ | 190 | 454 | 644 |
Obion 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 | 14357 | 15418 | 29,775 |
| WAC | 13234 | 14119 | 27,353 |
| WA | 13018 | 13920 | 26,938 |
| NHWAC | 12676 | 13614 | 26,290 |
| NHWA | 12471 | 13427 | 25,898 |
| BAC | 1777 | 1848 | 3,625 |
| NHBAC | 1739 | 1819 | 3,558 |
| BA | 1621 | 1723 | 3,344 |
| NHBA | 1596 | 1700 | 3,296 |
| H | 616 | 550 | 1,166 |
| HWAC | 558 | 505 | 1,063 |
| HWA | 547 | 493 | 1,040 |
| TOM | 228 | 206 | 434 |
| NHTOM | 212 | 193 | 405 |
| IAC | 108 | 102 | 210 |
| NHIAC | 89 | 90 | 179 |
| AAC | 64 | 97 | 161 |
| NHAAC | 57 | 83 | 140 |
| AA | 49 | 80 | 129 |
| NHAA | 44 | 68 | 112 |
| IA | 42 | 31 | 73 |
| HBAC | 38 | 29 | 67 |
| NHIA | 29 | 25 | 54 |
| HBA | 25 | 23 | 48 |
| NAC | 23 | 12 | 35 |
| HIAC | 19 | 12 | 31 |
| HTOM | 16 | 13 | 29 |
| NA | 15 | 8 | 23 |
| HAAC | 7 | 14 | 21 |
| NHNAC | 11 | 9 | 20 |
| HIA | 13 | 6 | 19 |
| HAA | 5 | 12 | 17 |
| HNAC | 12 | 3 | 15 |
| HNA | 10 | 3 | 13 |
| NHNA | 5 | 5 | 10 |
• Gibson County population
28 mi, 
154°
• Dyer County
25.2 mi, 
213°
• Weakley County
24.2 mi, 
99°
• New Madrid County
32.5 mi, 
300°
• Pemiscot County
36.9 mi, 
253°
• Mississippi County
33.3 mi, 
345°
• Lake County
18.8 mi, 
264°
• Fulton County
13.6 mi, 351°
• Carlisle County
35.8 mi, 
15°
• Hickman County
24.1 mi, 24°
[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
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