Last official estimated population of Somerset County was 77,693 (year 2014)[1]. This was 0.024% of total US population and 0.6% of total Pennsylvania state population. Area of Somerset County is 1,080.9 mi² (=2799.6 km²), in this year population density was 71.88 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Somerset County population in 2024 would be 77,571 [0].
Historical population of Somerset County for period 1800-2014 [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
[1800-1810] +1.03 %/yr
[1810-1820] +2.16 %/yr
[1820-1830] +2.43 %/yr
[1830-1840] +1.02 %/yr
[1840-1850] +2.2 %/yr
[1850-1860] +0.93 %/yr
[1860-1870] +0.53 %/yr
[1870-1880] +1.61 %/yr
[1880-1890] +1.2 %/yr
[1890-1900] +2.86 %/yr
[1900-1910] +3.19 %/yr
[1910-1920] +1.95 %/yr
[1920-1930] -0.17 %/yr
[1930-1940] +0.51 %/yr
[1940-1950] -0.38 %/yr
[1950-1960] -0.55 %/yr
[1960-1970] -0.18 %/yr
[1970-1980] +0.66 %/yr
[1980-1990] -0.38 %/yr
[1990-2000] +0.23 %/yr
[2000-2005] -0.26 %/yr
[2005-2010] -0.32 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Somerset County? Visit this page: Settlements in Somerset County, PA
Population of Somerset County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1672 | 1719 | 3,391 |
| 5 to 9 | 1905 | 1824 | 3,729 |
| 10 to 14 | 2100 | 2109 | 4,209 |
| 15 to 19 | 2125 | 1936 | 4,061 |
| 20 to 24 | 2458 | 1802 | 4,260 |
| 25 to 29 | 2485 | 1755 | 4,240 |
| 30 to 34 | 2527 | 1843 | 4,370 |
| 35 to 39 | 2430 | 1913 | 4,343 |
| 40 to 44 | 2775 | 2257 | 5,032 |
| 45 to 49 | 2879 | 2392 | 5,271 |
| 50 to 54 | 3122 | 2811 | 5,933 |
| 55 to 59 | 3180 | 2981 | 6,161 |
| 60 to 64 | 2947 | 2750 | 5,697 |
| 65 to 69 | 2357 | 2299 | 4,656 |
| 70 to 74 | 1691 | 1824 | 3,515 |
| 75 to 79 | 1225 | 1532 | 2,757 |
| 80 to 84 | 812 | 1257 | 2,069 |
| 85+ | 864 | 1660 | 2,524 |
Somerset 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 | 38808 | 36368 | 75,176 |
| WAC | 37285 | 36341 | 73,626 |
| WA | 37053 | 36101 | 73,154 |
| NHWAC | 36637 | 36065 | 72,702 |
| NHWA | 36442 | 35834 | 72,276 |
| BAC | 2178 | 206 | 2,384 |
| NHBAC | 2096 | 192 | 2,288 |
| BA | 2068 | 95 | 2,163 |
| NHBA | 2010 | 88 | 2,098 |
| H | 746 | 296 | 1,042 |
| HWAC | 648 | 276 | 924 |
| HWA | 611 | 267 | 878 |
| TOM | 255 | 259 | 514 |
| NHTOM | 209 | 247 | 456 |
| AAC | 186 | 216 | 402 |
| NHAAC | 152 | 210 | 362 |
| IAC | 166 | 155 | 321 |
| NHIAC | 127 | 143 | 270 |
| AA | 113 | 152 | 265 |
| NHAA | 101 | 149 | 250 |
| IA | 60 | 44 | 104 |
| HBAC | 82 | 14 | 96 |
| NHIA | 41 | 38 | 79 |
| HBA | 58 | 7 | 65 |
| HTOM | 46 | 12 | 58 |
| HIAC | 39 | 12 | 51 |
| HAAC | 34 | 6 | 40 |
| NAC | 17 | 23 | 40 |
| NHNAC | 14 | 20 | 34 |
| HIA | 19 | 6 | 25 |
| NA | 5 | 13 | 18 |
| NHNA | 5 | 12 | 17 |
| HAA | 12 | 3 | 15 |
| HNAC | 3 | 3 | 6 |
| HNA | 0 | 1 | 1 |
• Westmoreland County population
32.5 mi, 
314°
• Cambria County
40.2 mi, 
24°
• Fayette County
32.7 mi, 
262°
• Indiana County
46.4 mi, 
356°
• Allegany County
30.8 mi, 
145°
• Bedford County
28.3 mi, 
87°
• Preston County
49.1 mi, 
223°
• Garrett County
32.7 mi, 
203°
• Mineral County
40 mi, 
174°
• Fulton County
48.2 mi, 
95°
[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
*Bedford Pennsylvania Notes
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