Last official estimated population of Sumter County was 13,748 (year 2014)[1]. This was 0.004% of total US population and 0.3% of total Alabama state population. Area of Sumter County is 913.3 mi² (=2365.5 km²), in this year population density was 15.05 p/mi². If population growth rate would be same as in period 2010-2014 (-0.03%/yr), Sumter County population in 2026 would be 13,703 [0].
Historical population of Sumter County for period 1840-2014 [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

[1840-1850] -2.92 %/yr
[1850-1860] +0.77 %/yr
[1860-1870] +0.03 %/yr
[1870-1880] +1.77 %/yr
[1880-1890] +0.29 %/yr
[1890-1900] +1.01 %/yr
[1900-1910] -1.3 %/yr
[1910-1920] -1.15 %/yr
[1920-1930] +0.52 %/yr
[1930-1940] +0.14 %/yr
[1940-1950] -1.45 %/yr
[1950-1960] -1.63 %/yr
[1960-1970] -1.65 %/yr
[1970-1980] -0.04 %/yr
[1980-1990] -0.44 %/yr
[1990-2000] -0.9 %/yr
[2000-2005] -0.87 %/yr
[2005-2010] -0.54 %/yr
[2010-2014] -0.03 %/yr
Looking for settlements in Sumter County? Visit this page: Settlements in Sumter County, AL
Population of Sumter County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 307 | 319 | 626 |
| 5 to 9 | 351 | 372 | 723 |
| 10 to 14 | 377 | 394 | 771 |
| 15 to 19 | 544 | 571 | 1,115 |
| 20 to 24 | 760 | 998 | 1,758 |
| 25 to 29 | 349 | 315 | 664 |
| 30 to 34 | 275 | 316 | 591 |
| 35 to 39 | 231 | 328 | 559 |
| 40 to 44 | 319 | 390 | 709 |
| 45 to 49 | 306 | 392 | 698 |
| 50 to 54 | 408 | 524 | 932 |
| 55 to 59 | 449 | 542 | 991 |
| 60 to 64 | 426 | 456 | 882 |
| 65 to 69 | 298 | 352 | 650 |
| 70 to 74 | 208 | 281 | 489 |
| 75 to 79 | 167 | 225 | 392 |
| 80 to 84 | 68 | 193 | 261 |
| 85+ | 86 | 269 | 355 |
Sumter 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 | 5855 | 7171 | 13,026 |
| BAC | 4320 | 5392 | 9,712 |
| BA | 4304 | 5373 | 9,677 |
| NHBAC | 4300 | 5366 | 9,666 |
| NHBA | 4284 | 5347 | 9,631 |
| WAC | 1596 | 1810 | 3,406 |
| WA | 1570 | 1781 | 3,351 |
| NHWAC | 1544 | 1772 | 3,316 |
| NHWA | 1519 | 1744 | 3,263 |
| H | 74 | 66 | 140 |
| HWAC | 52 | 38 | 90 |
| HWA | 51 | 37 | 88 |
| TOM | 30 | 36 | 66 |
| NHTOM | 29 | 34 | 63 |
| AAC | 20 | 37 | 57 |
| NHAAC | 20 | 36 | 56 |
| IAC | 22 | 31 | 53 |
| NHIAC | 21 | 30 | 51 |
| NHAA | 18 | 33 | 51 |
| AA | 18 | 33 | 51 |
| HBAC | 20 | 26 | 46 |
| HBA | 20 | 26 | 46 |
| NHIA | 5 | 12 | 17 |
| IA | 5 | 12 | 17 |
| NAC | 3 | 5 | 8 |
| HNAC | 2 | 2 | 4 |
| NA | 2 | 2 | 4 |
| NHNAC | 1 | 3 | 4 |
| HNA | 2 | 1 | 3 |
| HTOM | 1 | 2 | 3 |
| HIAC | 1 | 1 | 2 |
| NHNA | 0 | 1 | 1 |
| HAAC | 0 | 1 | 1 |
| HIA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Lauderdale County population
30 mi,
243°
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34 mi,
135°
• Pickens County
48.7 mi,
7°
• Clarke County
47.6 mi,
216°
• Hale County
35.2 mi,
72°
• Choctaw County
42 mi,
183°
• Noxubee County
41.1 mi,
328°
• Perry County
52.8 mi,
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• Kemper County
26.9 mi,
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• Greene County
21.9 mi,
38°
[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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