Last official estimated population of Richland County was 385,800 (year 2014)[1]. This was 0.121% of total US population and 7.9% of total South Carolina state population. Area of Richland County is 771.8 mi² (=1998.9 km²), in this year population density was 499.90 p/mi². If population growth rate would be same as in period 2010-2014 (+0.08%/yr), Richland County population in 2023 would be 388,732 [0].
Historical population of Richland County for period 1790-2014 [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
[1790-1800] +4.49 %/yr
[1800-1810] +4 %/yr
[1810-1820] +3.16 %/yr
[1820-1830] +1.83 %/yr
[1830-1840] +1.05 %/yr
[1840-1850] +2.13 %/yr
[1850-1860] -1 %/yr
[1860-1870] +2.32 %/yr
[1870-1880] +2.18 %/yr
[1880-1890] +2.57 %/yr
[1890-1900] +2.16 %/yr
[1900-1910] +1.92 %/yr
[1910-1920] +3.54 %/yr
[1920-1930] +1.16 %/yr
[1930-1940] +1.81 %/yr
[1940-1950] +3.12 %/yr
[1950-1960] +3.45 %/yr
[1960-1970] +1.57 %/yr
[1970-1980] +1.44 %/yr
[1980-1990] +0.6 %/yr
[1990-2000] +1.14 %/yr
[2000-2005] +1.7 %/yr
[2005-2010] +1.96 %/yr
[2010-2014] +0.08 %/yr
Looking for settlements in Richland County? Visit this page: Settlements in Richland County, SC
Population of Richland County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 12108 | 11734 | 23,842 |
| 5 to 9 | 12651 | 12359 | 25,010 |
| 10 to 14 | 12317 | 12203 | 24,520 |
| 15 to 19 | 16857 | 15632 | 32,489 |
| 20 to 24 | 24238 | 21983 | 46,221 |
| 25 to 29 | 15500 | 15258 | 30,758 |
| 30 to 34 | 13934 | 14628 | 28,562 |
| 35 to 39 | 11985 | 12921 | 24,906 |
| 40 to 44 | 12026 | 12951 | 24,977 |
| 45 to 49 | 11316 | 12867 | 24,183 |
| 50 to 54 | 11883 | 13691 | 25,574 |
| 55 to 59 | 11244 | 12946 | 24,190 |
| 60 to 64 | 9432 | 11397 | 20,829 |
| 65 to 69 | 7727 | 8970 | 16,697 |
| 70 to 74 | 4850 | 6109 | 10,959 |
| 75 to 79 | 2985 | 4243 | 7,228 |
| 80 to 84 | 2008 | 3252 | 5,260 |
| 85+ | 1668 | 3693 | 5,361 |
Richland 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 | 183882 | 197387 | 381,269 |
| WAC | 99609 | 99018 | 198,627 |
| BAC | 90536 | 103292 | 193,828 |
| WA | 96404 | 95535 | 191,939 |
| NHBAC | 88337 | 101048 | 189,385 |
| BA | 88010 | 100406 | 188,416 |
| NHBA | 86108 | 98516 | 184,624 |
| NHWAC | 91199 | 91952 | 183,151 |
| NHWA | 88394 | 88892 | 177,286 |
| H | 10847 | 9450 | 20,297 |
| HWAC | 8410 | 7066 | 15,476 |
| HWA | 8010 | 6643 | 14,653 |
| AAC | 6577 | 6863 | 13,440 |
| NHAAC | 6336 | 6607 | 12,943 |
| AA | 5288 | 5436 | 10,724 |
| NHAA | 5195 | 5342 | 10,537 |
| TOM | 3951 | 4413 | 8,364 |
| NHTOM | 3464 | 3875 | 7,339 |
| HBAC | 2199 | 2244 | 4,443 |
| IAC | 1885 | 2136 | 4,021 |
| HBA | 1902 | 1890 | 3,792 |
| NHIAC | 1435 | 1708 | 3,143 |
| IA | 776 | 739 | 1,515 |
| NAC | 551 | 562 | 1,113 |
| NHIA | 503 | 528 | 1,031 |
| HTOM | 487 | 538 | 1,025 |
| HIAC | 450 | 428 | 878 |
| NHNAC | 406 | 445 | 851 |
| NA | 300 | 308 | 608 |
| HAAC | 241 | 256 | 497 |
| HIA | 273 | 211 | 484 |
| NHNA | 218 | 234 | 452 |
| HNAC | 145 | 117 | 262 |
| HAA | 93 | 94 | 187 |
| HNA | 82 | 74 | 156 |
• Lexington County population
23.5 mi, 
246°
• Sumter County
30.6 mi, 
104°
• Orangeburg County
41.3 mi, 
172°
• Lancaster County
46.8 mi, 
13°
• Kershaw County
27.7 mi, 
39°
• Newberry County
44 mi, 
294°
• Clarendon County
46.4 mi, 
122°
• Fairfield County
28.5 mi, 
332°
• Lee County
38.1 mi, 
76°
• Calhoun County
25.4 mi, 
164°
[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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