Last official estimated population of Indiana County was 88,810 (year 2014)[1]. This was 0.028% of total US population and 0.7% of total Pennsylvania state population. Area of Indiana County is 834.3 mi² (=2160.8 km²), in this year population density was 106.45 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Indiana County population in 2024 would be 88,635 [0].
Historical population of Indiana County for period 1810-2014 [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
[1810-1820] +3.64 %/yr
[1820-1830] +4.84 %/yr
[1830-1840] +3.84 %/yr
[1840-1850] +2.72 %/yr
[1850-1860] +2.17 %/yr
[1860-1870] +0.7 %/yr
[1870-1880] +1.15 %/yr
[1880-1890] +0.4 %/yr
[1890-1900] +0.09 %/yr
[1900-1910] +4.52 %/yr
[1910-1920] +2.03 %/yr
[1920-1930] -0.7 %/yr
[1930-1940] +0.58 %/yr
[1940-1950] -0.35 %/yr
[1950-1960] -0.23 %/yr
[1960-1970] +0.53 %/yr
[1970-1980] +1.51 %/yr
[1980-1990] -0.25 %/yr
[1990-2000] -0.04 %/yr
[2000-2005] -0.19 %/yr
[2005-2010] +0.03 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Indiana County? Visit this page: Settlements in Indiana County, PA
Population of Indiana County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2208 | 2171 | 4,379 |
| 5 to 9 | 2230 | 2093 | 4,323 |
| 10 to 14 | 2342 | 2221 | 4,563 |
| 15 to 19 | 3655 | 3821 | 7,476 |
| 20 to 24 | 5483 | 5008 | 10,491 |
| 25 to 29 | 2724 | 2072 | 4,796 |
| 30 to 34 | 2381 | 2156 | 4,537 |
| 35 to 39 | 2165 | 2032 | 4,197 |
| 40 to 44 | 2359 | 2253 | 4,612 |
| 45 to 49 | 2575 | 2548 | 5,123 |
| 50 to 54 | 2985 | 2976 | 5,961 |
| 55 to 59 | 3227 | 3146 | 6,373 |
| 60 to 64 | 2924 | 2921 | 5,845 |
| 65 to 69 | 2315 | 2344 | 4,659 |
| 70 to 74 | 1668 | 1857 | 3,525 |
| 75 to 79 | 1231 | 1475 | 2,706 |
| 80 to 84 | 778 | 1135 | 1,913 |
| 85+ | 669 | 1558 | 2,227 |
Indiana 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 | 43246 | 43253 | 86,499 |
| WAC | 41589 | 42331 | 83,920 |
| WA | 41158 | 41922 | 83,080 |
| NHWAC | 41032 | 41885 | 82,917 |
| NHWA | 40643 | 41506 | 82,149 |
| BAC | 1972 | 1031 | 3,003 |
| NHBAC | 1872 | 952 | 2,824 |
| BA | 1751 | 799 | 2,550 |
| NHBA | 1671 | 743 | 2,414 |
| H | 673 | 534 | 1,207 |
| AAC | 564 | 637 | 1,201 |
| NHAAC | 549 | 626 | 1,175 |
| AA | 457 | 554 | 1,011 |
| HWAC | 557 | 446 | 1,003 |
| NHAA | 449 | 545 | 994 |
| HWA | 515 | 416 | 931 |
| TOM | 460 | 435 | 895 |
| NHTOM | 416 | 401 | 817 |
| IAC | 247 | 214 | 461 |
| NHIAC | 202 | 185 | 387 |
| HBAC | 100 | 79 | 179 |
| IA | 89 | 68 | 157 |
| HBA | 80 | 56 | 136 |
| NHIA | 64 | 52 | 116 |
| HTOM | 44 | 34 | 78 |
| HIAC | 45 | 29 | 74 |
| NAC | 27 | 27 | 54 |
| NHNAC | 24 | 21 | 45 |
| HIA | 25 | 16 | 41 |
| HAAC | 15 | 11 | 26 |
| HAA | 8 | 9 | 17 |
| NA | 4 | 9 | 13 |
| HNAC | 3 | 6 | 9 |
| NHNA | 3 | 6 | 9 |
| HNA | 1 | 3 | 4 |
• Allegheny County population
48.5 mi, 
255°
• Westmoreland County
30.8 mi, 
220°
• Butler County
47.1 mi, 
292°
• Cambria County
22.1 mi, 
116°
• Blair County
42.1 mi, 
104°
• Clearfield County
40.1 mi, 
53°
• Somerset County
46.4 mi, 
176°
• Armstrong County
22.6 mi, 
299°
• Jefferson County
33.8 mi, 
6°
• Clarion County
41.6 mi, 
335°
[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 15 Pennsylvania Notes
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