Last official estimated population of Marion County was 8,747 (year 2014)[1]. This was 0.003% of total US population and 0.1% of total Georgia state population. Area of Marion County is 367.5 mi² (=951.8 km²), in this year population density was 23.80 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Marion County population in 2025 would be 8,761 [0].
Historical population of Marion 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] +12.85 %/yr
[1840-1850] +7.89 %/yr
[1850-1860] -3.25 %/yr
[1860-1870] +0.8 %/yr
[1870-1880] +0.72 %/yr
[1880-1890] -1.06 %/yr
[1890-1900] +2.69 %/yr
[1900-1910] -0.97 %/yr
[1910-1920] -1.83 %/yr
[1920-1930] -0.87 %/yr
[1930-1940] -0.02 %/yr
[1940-1950] -0.64 %/yr
[1950-1960] -1.73 %/yr
[1960-1970] -0.71 %/yr
[1970-1980] +0.38 %/yr
[1980-1990] +0.54 %/yr
[1990-2000] +2.47 %/yr
[2000-2005] +1.85 %/yr
[2005-2010] +2.26 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Marion County? Visit this page: Settlements in Marion County, GA
Population of Marion County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 258 | 278 | 536 |
| 5 to 9 | 251 | 296 | 547 |
| 10 to 14 | 264 | 263 | 527 |
| 15 to 19 | 289 | 233 | 522 |
| 20 to 24 | 283 | 256 | 539 |
| 25 to 29 | 232 | 249 | 481 |
| 30 to 34 | 232 | 225 | 457 |
| 35 to 39 | 277 | 216 | 493 |
| 40 to 44 | 247 | 286 | 533 |
| 45 to 49 | 281 | 310 | 591 |
| 50 to 54 | 389 | 370 | 759 |
| 55 to 59 | 363 | 351 | 714 |
| 60 to 64 | 313 | 288 | 601 |
| 65 to 69 | 284 | 265 | 549 |
| 70 to 74 | 184 | 234 | 418 |
| 75 to 79 | 118 | 167 | 285 |
| 80 to 84 | 71 | 65 | 136 |
| 85+ | 52 | 57 | 109 |
Marion 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 | 3935 | 4190 | 8,125 |
| WAC | 2871 | 2884 | 5,755 |
| WA | 2799 | 2829 | 5,628 |
| NHWAC | 2614 | 2711 | 5,325 |
| NHWA | 2550 | 2663 | 5,213 |
| BAC | 1331 | 1449 | 2,780 |
| BA | 1289 | 1419 | 2,708 |
| NHBAC | 1285 | 1418 | 2,703 |
| NHBA | 1246 | 1393 | 2,639 |
| H | 453 | 219 | 672 |
| HWAC | 257 | 173 | 430 |
| HWA | 249 | 166 | 415 |
| NAC | 145 | 23 | 168 |
| NA | 141 | 17 | 158 |
| HNAC | 138 | 8 | 146 |
| HNA | 137 | 8 | 145 |
| TOM | 79 | 62 | 141 |
| IAC | 71 | 66 | 137 |
| NHTOM | 71 | 55 | 126 |
| AAC | 55 | 54 | 109 |
| NHIAC | 54 | 52 | 106 |
| NHAAC | 50 | 53 | 103 |
| AA | 40 | 45 | 85 |
| NHAA | 37 | 45 | 82 |
| HBAC | 46 | 31 | 77 |
| IA | 40 | 37 | 77 |
| HBA | 43 | 26 | 69 |
| NHIA | 27 | 25 | 52 |
| HIAC | 17 | 14 | 31 |
| HIA | 13 | 12 | 25 |
| NHNAC | 7 | 15 | 22 |
| HTOM | 8 | 7 | 15 |
| NHNA | 4 | 9 | 13 |
| HAAC | 5 | 1 | 6 |
| HAA | 3 | 0 | 3 |
• Muscogee County population
22.7 mi,
297°
• Sumter County
29 mi,
139°
• Harris County
34 mi,
319°
• Macon County
27.9 mi,
89°
• Chattahoochee County
15.1 mi,
266°
• Taylor County
21.1 mi,
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• Talbot County
23.8 mi,
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• Stewart County
26.6 mi,
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• Schley County
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• Webster County
21.7 mi,
183°
[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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