Last official estimated population of Mercer County was 62,313 (year 2014)[1]. This was 0.02% of total US population and 3.4% of total West Virginia state population. Area of Mercer County is 420.7 mi² (=1089.6 km²), in this year population density was 148.12 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Mercer County population in 2025 would be 62,448 [0].
Historical population of Mercer County for period 1840-2014 [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

[1840-1850] +6.58 %/yr
[1850-1860] +4.91 %/yr
[1860-1870] +0.35 %/yr
[1870-1880] +0.56 %/yr
[1880-1890] +7.92 %/yr
[1890-1900] +3.7 %/yr
[1900-1910] +5.24 %/yr
[1910-1920] +2.59 %/yr
[1920-1930] +2.15 %/yr
[1930-1940] +1.08 %/yr
[1940-1950] +0.94 %/yr
[1950-1960] -0.95 %/yr
[1960-1970] -0.76 %/yr
[1970-1980] +1.58 %/yr
[1980-1990] -1.28 %/yr
[1990-2000] -0.31 %/yr
[2000-2005] -0.54 %/yr
[2005-2010] +0.31 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Mercer County? Visit this page: Settlements in Mercer County, WV
Population of Mercer County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2031 | 1913 | 3,944 |
| 5 to 9 | 1758 | 1644 | 3,402 |
| 10 to 14 | 1692 | 1715 | 3,407 |
| 15 to 19 | 1901 | 1773 | 3,674 |
| 20 to 24 | 1979 | 2033 | 4,012 |
| 25 to 29 | 1812 | 1781 | 3,593 |
| 30 to 34 | 1584 | 1805 | 3,389 |
| 35 to 39 | 1746 | 1845 | 3,591 |
| 40 to 44 | 1867 | 1938 | 3,805 |
| 45 to 49 | 1877 | 1861 | 3,738 |
| 50 to 54 | 1906 | 2094 | 4,000 |
| 55 to 59 | 2125 | 2491 | 4,616 |
| 60 to 64 | 2158 | 2528 | 4,686 |
| 65 to 69 | 1886 | 2089 | 3,975 |
| 70 to 74 | 1316 | 1462 | 2,778 |
| 75 to 79 | 920 | 1215 | 2,135 |
| 80 to 84 | 583 | 929 | 1,512 |
| 85+ | 453 | 1075 | 1,528 |
Mercer 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 | 29264 | 31888 | 61,152 |
| WAC | 27440 | 29902 | 57,342 |
| NHWAC | 27153 | 29654 | 56,807 |
| WA | 26955 | 29386 | 56,341 |
| NHWA | 26707 | 29161 | 55,868 |
| BAC | 2206 | 2340 | 4,546 |
| NHBAC | 2153 | 2285 | 4,438 |
| BA | 1893 | 2009 | 3,902 |
| NHBA | 1857 | 1963 | 3,820 |
| TOM | 506 | 532 | 1,038 |
| NHTOM | 465 | 507 | 972 |
| H | 330 | 303 | 633 |
| HWAC | 287 | 248 | 535 |
| IAC | 233 | 250 | 483 |
| HWA | 248 | 225 | 473 |
| AAC | 229 | 237 | 466 |
| NHIAC | 212 | 233 | 445 |
| NHAAC | 215 | 229 | 444 |
| AA | 169 | 190 | 359 |
| NHAA | 168 | 186 | 354 |
| IA | 68 | 74 | 142 |
| NHIA | 64 | 71 | 135 |
| HBAC | 53 | 55 | 108 |
| HBA | 36 | 46 | 82 |
| HTOM | 41 | 25 | 66 |
| HIAC | 21 | 17 | 38 |
| NAC | 18 | 13 | 31 |
| NHNAC | 16 | 10 | 26 |
| HAAC | 14 | 8 | 22 |
| HIA | 4 | 3 | 7 |
| HNAC | 2 | 3 | 5 |
| HAA | 1 | 4 | 5 |
| NA | 3 | 0 | 3 |
| NHNA | 3 | 0 | 3 |
| HNA | 0 | 0 | 0 |
• Raleigh County population
26.3 mi,
340°
• Tazewell County
31.6 mi,
232°
• Pulaski County
31.9 mi,
137°
• Wythe County
34.8 mi,
177°
• Wyoming County
27.9 mi,
299°
• McDowell County
30.3 mi,
267°
• Giles County
22.3 mi,
106°
• Summers County
22.2 mi,
38°
• Monroe County
32.3 mi,
71°
• Bland County
18.9 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
See note 16 West Virginia Notes
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