Last official estimated population of Allendale County was 10,353 (year 2014)[1]. This was 0.003% of total US population and 0.2% of total South Carolina state population. Area of Allendale County is 412.4 mi² (=1068.2 km²), in this year population density was 25.10 p/mi². If population growth rate would be same as in period 2010-2014 (-0.16%/yr), Allendale County population in 2024 would be 10,190 [0].
Historical population of Allendale County for period 1920-2014 [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
[1920-1930] -1.9 %/yr
[1930-1940] -0.19 %/yr
[1940-1950] -1.02 %/yr
[1950-1960] -0.35 %/yr
[1960-1970] -1.58 %/yr
[1970-1980] +0.99 %/yr
[1980-1990] +0.92 %/yr
[1990-2000] -0.46 %/yr
[2000-2005] -0.32 %/yr
[2005-2010] -1.12 %/yr
[2010-2014] -0.16 %/yr
Looking for settlements in Allendale County? Visit this page: Settlements in Allendale County, SC
Population of Allendale County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 256 | 241 | 497 |
| 5 to 9 | 266 | 249 | 515 |
| 10 to 14 | 306 | 257 | 563 |
| 15 to 19 | 285 | 225 | 510 |
| 20 to 24 | 430 | 290 | 720 |
| 25 to 29 | 490 | 233 | 723 |
| 30 to 34 | 421 | 238 | 659 |
| 35 to 39 | 322 | 232 | 554 |
| 40 to 44 | 356 | 293 | 649 |
| 45 to 49 | 395 | 295 | 690 |
| 50 to 54 | 347 | 310 | 657 |
| 55 to 59 | 337 | 356 | 693 |
| 60 to 64 | 330 | 357 | 687 |
| 65 to 69 | 278 | 338 | 616 |
| 70 to 74 | 184 | 203 | 387 |
| 75 to 79 | 101 | 130 | 231 |
| 80 to 84 | 68 | 117 | 185 |
| 85+ | 56 | 103 | 159 |
Allendale 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 | 5066 | 4352 | 9,418 |
| BAC | 3727 | 3388 | 7,115 |
| BA | 3708 | 3360 | 7,068 |
| NHBAC | 3701 | 3362 | 7,063 |
| NHBA | 3684 | 3338 | 7,022 |
| WAC | 1473 | 1058 | 2,531 |
| WA | 1445 | 1019 | 2,464 |
| NHWAC | 1346 | 970 | 2,316 |
| NHWA | 1322 | 937 | 2,259 |
| H | 162 | 115 | 277 |
| HWAC | 127 | 88 | 215 |
| HWA | 123 | 82 | 205 |
| TOM | 33 | 44 | 77 |
| AAC | 33 | 38 | 71 |
| NHTOM | 27 | 37 | 64 |
| AA | 26 | 29 | 55 |
| NHAAC | 23 | 32 | 55 |
| HBAC | 26 | 26 | 52 |
| IAC | 26 | 24 | 50 |
| HBA | 24 | 22 | 46 |
| NHIAC | 22 | 22 | 44 |
| NHAA | 19 | 25 | 44 |
| IA | 15 | 13 | 28 |
| NHIA | 13 | 13 | 26 |
| HAAC | 10 | 6 | 16 |
| HTOM | 6 | 7 | 13 |
| HAA | 7 | 4 | 11 |
| HIAC | 4 | 2 | 6 |
| NAC | 2 | 3 | 5 |
| NHNAC | 1 | 3 | 4 |
| NHNA | 1 | 2 | 3 |
| NA | 1 | 2 | 3 |
| HIA | 2 | 0 | 2 |
| HNAC | 1 | 0 | 1 |
| HNA | 0 | 0 | 0 |
• Aiken County population
42.4 mi, 
338°
• Effingham County
42.7 mi, 
178°
• Colleton County
42.3 mi, 
103°
• Jasper County
42.8 mi, 
152°
• Burke County
37.9 mi, 
277°
• Barnwell County
19.8 mi, 
348°
• Hampton County
18.9 mi, 
137°
• Bamberg County
23.7 mi, 
49°
• Screven County
21.9 mi, 
222°
• Jenkins County
37.5 mi, 
250°
[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 3 South Carolina Notes
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