Last official estimated population of Lancaster County was 76,945 (year 2014)[1]. This was 0.024% of total US population and 1.6% of total South Carolina state population. Area of Lancaster County is 555.1 mi² (=1437.8 km²), in this year population density was 138.61 p/mi². If population growth rate would be same as in period 2010-2014 (+0.1%/yr), Lancaster County population in 2026 would be 77,831 [0].
Historical population of Lancaster 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] -0.47 %/yr
[1800-1810] +0.5 %/yr
[1810-1820] +3.27 %/yr
[1820-1830] +1.74 %/yr
[1830-1840] -0.45 %/yr
[1840-1850] +1.04 %/yr
[1850-1860] +0.71 %/yr
[1860-1870] +0.24 %/yr
[1870-1880] +3.41 %/yr
[1880-1890] +2.08 %/yr
[1890-1900] +1.59 %/yr
[1900-1910] +0.92 %/yr
[1910-1920] +0.72 %/yr
[1920-1930] -0.23 %/yr
[1930-1940] +1.83 %/yr
[1940-1950] +1.01 %/yr
[1950-1960] +0.6 %/yr
[1960-1970] +0.97 %/yr
[1970-1980] +2.1 %/yr
[1980-1990] +0.21 %/yr
[1990-2000] +1.2 %/yr
[2000-2005] +1.42 %/yr
[2005-2010] +3.08 %/yr
[2010-2014] +0.1 %/yr
Looking for settlements in Lancaster County? Visit this page: Settlements in Lancaster County, SC
Population of Lancaster County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2437 | 2312 | 4,749 |
| 5 to 9 | 2741 | 2664 | 5,405 |
| 10 to 14 | 2551 | 2504 | 5,055 |
| 15 to 19 | 2304 | 2205 | 4,509 |
| 20 to 24 | 2413 | 2222 | 4,635 |
| 25 to 29 | 2481 | 2362 | 4,843 |
| 30 to 34 | 2579 | 2662 | 5,241 |
| 35 to 39 | 2699 | 2626 | 5,325 |
| 40 to 44 | 2993 | 2863 | 5,856 |
| 45 to 49 | 2775 | 2633 | 5,408 |
| 50 to 54 | 2739 | 2905 | 5,644 |
| 55 to 59 | 2614 | 2810 | 5,424 |
| 60 to 64 | 2506 | 2956 | 5,462 |
| 65 to 69 | 2556 | 3119 | 5,675 |
| 70 to 74 | 2030 | 2261 | 4,291 |
| 75 to 79 | 1223 | 1495 | 2,718 |
| 80 to 84 | 676 | 872 | 1,548 |
| 85+ | 492 | 880 | 1,372 |
Lancaster 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 | 38596 | 40369 | 78,965 |
| WAC | 30809 | 32229 | 63,038 |
| WA | 30317 | 31710 | 62,027 |
| NHWAC | 28871 | 30460 | 59,331 |
| NHWA | 28429 | 29988 | 58,417 |
| BAC | 9764 | 9884 | 19,648 |
| NHBAC | 9551 | 9691 | 19,242 |
| BA | 9391 | 9515 | 18,906 |
| NHBA | 9210 | 9356 | 18,566 |
| H | 2213 | 1982 | 4,195 |
| HWAC | 1938 | 1769 | 3,707 |
| HWA | 1888 | 1722 | 3,610 |
| TOM | 547 | 575 | 1,122 |
| NHTOM | 490 | 518 | 1,008 |
| AAC | 445 | 481 | 926 |
| NHAAC | 416 | 458 | 874 |
| AA | 368 | 389 | 757 |
| NHAA | 349 | 376 | 725 |
| IAC | 306 | 305 | 611 |
| NHIAC | 233 | 256 | 489 |
| HBAC | 213 | 193 | 406 |
| HBA | 181 | 159 | 340 |
| IA | 158 | 146 | 304 |
| NHIA | 110 | 123 | 233 |
| HIAC | 73 | 49 | 122 |
| HTOM | 57 | 57 | 114 |
| NAC | 51 | 46 | 97 |
| HIA | 48 | 23 | 71 |
| NHNAC | 27 | 36 | 63 |
| HAAC | 29 | 23 | 52 |
| NA | 28 | 16 | 44 |
| HNAC | 24 | 10 | 34 |
| HAA | 19 | 13 | 32 |
| HNA | 20 | 8 | 28 |
| NHNA | 8 | 8 | 16 |
• Mecklenburg County population
39.4 mi, 
349°
• Richland County
46.8 mi, 
193°
• York County
33.5 mi, 
305°
• Union County
23.3 mi, 
24°
• Kershaw County
24.9 mi, 
165°
• Chesterfield County
31.1 mi, 
96°
• Chester County
26 mi, 
270°
• Anson County
39.1 mi, 
59°
• Fairfield County
31.4 mi, 
230°
• Lee County
44.7 mi, 
144°
[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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