Last official estimated population of DeKalb County was 692,574 (year 2014)[1]. This was 0.217% of total US population and 6.8% of total Georgia state population. Area of DeKalb County is 271.1 mi² (=702.3 km²), in this year population density was 2,554.29 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), DeKalb County population in 2025 would be 694,450 [0].
Historical population of DeKalb 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] +0.42 %/yr
[1840-1850] +3.19 %/yr
[1850-1860] -5.89 %/yr
[1860-1870] +2.52 %/yr
[1870-1880] +3.77 %/yr
[1880-1890] +1.72 %/yr
[1890-1900] +2.08 %/yr
[1900-1910] +2.82 %/yr
[1910-1920] +4.68 %/yr
[1920-1930] +4.78 %/yr
[1930-1940] +2.15 %/yr
[1940-1950] +4.61 %/yr
[1950-1960] +6.53 %/yr
[1960-1970] +4.93 %/yr
[1970-1980] +1.52 %/yr
[1980-1990] +1.24 %/yr
[1990-2000] +2.01 %/yr
[2000-2005] +0.09 %/yr
[2005-2010] +0.68 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in DeKalb County? Visit this page: Settlements in DeKalb County, GA
Population of DeKalb County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 27176 | 25851 | 53,027 |
| 5 to 9 | 24817 | 23866 | 48,683 |
| 10 to 14 | 22458 | 21893 | 44,351 |
| 15 to 19 | 21172 | 20795 | 41,967 |
| 20 to 24 | 24115 | 25320 | 49,435 |
| 25 to 29 | 28636 | 31265 | 59,901 |
| 30 to 34 | 28738 | 31505 | 60,243 |
| 35 to 39 | 26129 | 28190 | 54,319 |
| 40 to 44 | 25852 | 27805 | 53,657 |
| 45 to 49 | 23514 | 25967 | 49,481 |
| 50 to 54 | 23096 | 26216 | 49,312 |
| 55 to 59 | 20080 | 24456 | 44,536 |
| 60 to 64 | 16901 | 21604 | 38,505 |
| 65 to 69 | 12303 | 15927 | 28,230 |
| 70 to 74 | 7715 | 10022 | 17,737 |
| 75 to 79 | 4731 | 6944 | 11,675 |
| 80 to 84 | 3030 | 5252 | 8,282 |
| 85+ | 2729 | 6091 | 8,820 |
DeKalb 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 | 308714 | 349168 | 657,882 |
| BAC | 185549 | 219082 | 404,631 |
| BA | 181492 | 214192 | 395,684 |
| NHBAC | 180480 | 213676 | 394,156 |
| NHBA | 177219 | 209598 | 386,817 |
| WAC | 137013 | 139623 | 276,636 |
| WA | 131587 | 133621 | 265,208 |
| NHWAC | 108914 | 116103 | 225,017 |
| NHWA | 104592 | 111178 | 215,770 |
| H | 34478 | 29801 | 64,279 |
| HWAC | 28099 | 23520 | 51,619 |
| HWA | 26995 | 22443 | 49,438 |
| AAC | 23167 | 23946 | 47,113 |
| NHAAC | 22605 | 23315 | 45,920 |
| AA | 20883 | 21424 | 42,307 |
| NHAA | 20594 | 21084 | 41,678 |
| TOM | 6900 | 7827 | 14,727 |
| NHTOM | 5559 | 6515 | 12,074 |
| HBAC | 5069 | 5406 | 10,475 |
| IAC | 4544 | 4533 | 9,077 |
| HBA | 4273 | 4594 | 8,867 |
| NHIAC | 2442 | 2934 | 5,376 |
| HIAC | 2102 | 1599 | 3,701 |
| IA | 2067 | 1596 | 3,663 |
| HTOM | 1341 | 1312 | 2,653 |
| HIA | 1426 | 950 | 2,376 |
| NHIA | 641 | 646 | 1,287 |
| NAC | 582 | 693 | 1,275 |
| HAAC | 562 | 631 | 1,193 |
| NHNAC | 355 | 447 | 802 |
| HAA | 289 | 340 | 629 |
| NA | 263 | 309 | 572 |
| HNAC | 227 | 246 | 473 |
| HNA | 154 | 162 | 316 |
| NHNA | 109 | 147 | 256 |
• Fulton County population
14 mi, 
275°
• Gwinnett County
17.5 mi, 
41°
• Cobb County
23.1 mi, 
300°
• Clayton County
17.4 mi, 
205°
• Henry County
22.3 mi, 
169°
• Douglas County
31.4 mi, 
260°
• Fayette County
29.1 mi, 211°
• Newton County
26.5 mi, 
126°
• Rockdale County
14.1 mi, 125°
• Walton County
28.4 mi, 
88°
[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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