210 Congregations
Reported congregations in Indiana County.
Indiana CountyDemographics.
A deeper look at who lives here, how the population has changed, and where age, gender, race, education, and religion intersect.
How has the county changed?
Indiana County’s population fell from 88,864 in 2010 to an estimated 82,878 in 2025.
Indiana County has 5,986 fewer residents than it did in 2010.
After small increases in 2023 and 2024, the population fell again in 2025.
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
Sources: U.S. Census Bureau via Federal Reserve Bank of St. Louis.
Who is in each age group?
The county is close to evenly split overall, but the balance changes across age groups and among racial groups.
Women outnumber men most clearly among residents 75 and older.
Younger age groups are more evenly split.
| Group | Female | Male | Total |
|---|---|---|---|
| Under 18 | 7,354 (8.9%) | 7,592 (9.1%) | 14,946 (18.0%) |
| 18 To 24 | 7,048 (8.5%) | 6,689 (8.1%) | 13,737 (16.5%) |
| 25 To 34 | 3,907 (4.7%) | 4,605 (5.5%) | 8,512 (10.3%) |
| 35 To 44 | 4,217 (5.1%) | 4,436 (5.3%) | 8,653 (10.4%) |
| 45 To 54 | 4,385 (5.3%) | 4,504 (5.4%) | 8,889 (10.7%) |
| 55 To 64 | 5,593 (6.7%) | 5,636 (6.8%) | 11,229 (13.5%) |
| 65 To 74 | 5,075 (6.1%) | 5,008 (6.0%) | 10,083 (12.1%) |
| 75 and Older | 4,055 (4.9%) | 2,938 (3.5%) | 6,993 (8.4%) |
| Total | 41,634 (50.1%) | 41,408 (49.9%) | 83,042 (100.0%) |
White and multiracial residents are nearly evenly split between women and men.
The estimates show a larger gap among Black residents (64% male) and Asian residents (57% female).
| Group | Female | Male | Total |
|---|---|---|---|
| White | 38,572 (46.4%) | 37,960 (45.7%) | 76,532 (92.2%) |
| Black | 675 (0.8%) | 1,211 (1.5%) | 1,886 (2.3%) |
| Native American / Alaskan | 13 (0.0%) | 3 (0.0%) | 16 (0.0%) |
| Asian | 423 (0.5%) | 320 (0.4%) | 743 (0.9%) |
| Hawaiian / Pacific Islander | 0 (0.0%) | 3 (0.0%) | 3 (0.0%) |
| Multiracial | 1,835 (2.2%) | 1,733 (2.1%) | 3,568 (4.3%) |
| Other | 116 (0.1%) | 178 (0.2%) | 294 (0.4%) |
| Total | 41,634 (50.1%) | 41,408 (49.9%) | 83,042 (100.0%) |
Sources: U.S. Census Bureau. ACS figures are estimates.
How does age intersect with race and education?
The county’s age profile looks different when viewed by race and by educational attainment, revealing where its population is concentrated across each measure.
Race by age
Counts show where each published racial group falls across four broad age ranges.
| Group | Under 18 | 18 To 44 | 45 To 64 | 65 and Older | Total |
|---|---|---|---|---|---|
| White | 13,688 (16.5%) | 27,389 (33.0%) | 18,971 (22.8%) | 16,484 (19.9%) | 76,532 (92.2%) |
| Black | 137 (0.2%) | 1,443 (1.7%) | 188 (0.2%) | 118 (0.1%) | 1,886 (2.3%) |
| Native American / Alaskan | 11 (0.0%) | 3 (0.0%) | 2 (0.0%) | 0 (0.0%) | 16 (0.0%) |
| Asian | 60 (0.1%) | 317 (0.4%) | 239 (0.3%) | 127 (0.2%) | 743 (0.9%) |
| Hawaiian / Pacific Islander | 0 (0.0%) | 3 (0.0%) | 0 (0.0%) | 0 (0.0%) | 3 (0.0%) |
| Multiracial | 1,022 (1.2%) | 1,536 (1.8%) | 691 (0.8%) | 319 (0.4%) | 3,568 (4.3%) |
| Other | 28 (0.0%) | 211 (0.3%) | 27 (0.0%) | 28 (0.0%) | 294 (0.4%) |
| Total | 14,946 (18.0%) | 30,902 (37.2%) | 20,118 (24.2%) | 17,076 (20.6%) | 83,042 (100.0%) |
Education by age
Residents age 18 and older are grouped by their highest reported level of education.
| Group | Less Than High School | High School | Some College / Associate | Bachelor’s+ | Total |
|---|---|---|---|---|---|
| 18 To 24 | 1,604 (2.4%) | 5,193 (7.6%) | 5,921 (8.7%) | 1,019 (1.5%) | 13,737 (20.2%) |
| 25 To 34 | 634 (0.9%) | 2,630 (3.9%) | 2,135 (3.1%) | 3,113 (4.6%) | 8,512 (12.5%) |
| 35 To 44 | 574 (0.8%) | 2,484 (3.6%) | 2,495 (3.7%) | 3,100 (4.6%) | 8,653 (12.7%) |
| 45 To 64 | 1,474 (2.2%) | 8,588 (12.6%) | 5,123 (7.5%) | 4,933 (7.2%) | 20,118 (29.5%) |
| 65 and Older | 1,375 (2.0%) | 8,299 (12.2%) | 3,877 (5.7%) | 3,525 (5.2%) | 17,076 (25.1%) |
| Total | 5,661 (8.3%) | 27,194 (39.9%) | 19,551 (28.7%) | 15,690 (23.0%) | 68,096 (100.0%) |
Sources: U.S. Census Bureau. ACS figures are estimates; very small cells should be read cautiously.
What do we know about religion?
Religious-census records describe participating institutions and reported adherents. They are not a direct measure of personal belief.
40,326 Reported Adherents
People counted by participating religious groups.
48.4% of the County
Reported adherents divided by the census population.
50 Religious Groups
Groups represented in the county detail file.
The Catholic Church is the largest reported religious group.
Reported adherent counts from participating religious bodies in 2020.
What changed by religious group?
Changes may reflect differences in census participation as well as reported adherence.
| Group | 2010 | 2020 | Change % |
|---|---|---|---|
| Catholic Church | 12,383 (29.8%) | 10,210 (25.3%) | -17.5% |
| United Methodist Church | 8,307 (20.0%) | 6,679 (16.6%) | -19.6% |
| Presbyterian Church (USA) | 3,668 (8.8%) | 1,659 (4.1%) | -54.8% |
| Evangelical Lutheran Church In America | 3,327 (8.0%) | 2,426 (6.0%) | -27.1% |
| Nondenominational Christian Churches | 3,196 (7.7%) | 7,548 (18.7%) | 136.2% |
| Amish Groups | 2,525 (6.1%) | 2,708 (6.7%) | 7.2% |
| Assemblies Of God | 700 (1.7%) | 2,788 (6.9%) | 298.3% |
| Total | 41,605 (100.0%) | 40,326 (100.0%) | -3.1% |
Sources: U.S. Religion Census. Participation and definitions can change between census years.
Why is the population changing?
Between July 2024 and July 2025, deaths exceeded births by 292. Net migration contributed another 92 residents to the decline.
807 added
Births, net international migration, and the statistical adjustment offset part of the loss.
1,186 lost
Deaths and net domestic outmigration outweighed gains. Net change: -379 residents. Both cards use the same scale.
Annual population changes
| Year | Births | Deaths | Domestic Migration | International Migration | Adjustment | Net Change |
|---|---|---|---|---|---|---|
| 2021 | 764 | 1,090 | 182 | 24 | 77 | -43 |
| 2022 | 751 | 1,179 | 189 | 78 | -61 | -222 |
| 2023 | 735 | 1,026 | 318 | 140 | -15 | 152 |
| 2024 | 730 | 1,017 | 406 | 100 | -7 | 212 |
| 2025 | 722 | 1,014 | -172 | 80 | 5 | -379 |
Sources: Census population estimates, vintage 2025. Components reconcile to annual change.
Who shares a home?
One in three county households consists of a person living alone. Family households make up a smaller share here than statewide.
Household composition
Share of all households, 2020–2024.
| Household Type | Indiana County | Pennsylvania |
|---|---|---|
| Family Households | 59.3% | 62.4% |
| Living Alone | 33.3% | 30.9% |
| Other Nonfamily Households | 7.3% | 6.7% |
Within family households
Share of all households. These categories together make up the family-household share.
| Family Type | Indiana County | Pennsylvania |
|---|---|---|
| Married-Couple Family | 47.3% | 46.2% |
| Male Householder, No Spouse | 4.0% | 4.7% |
| Female Householder, No Spouse | 8.1% | 11.5% |
Sources: U.S. Census Bureau, ACS 2020–2024. ACS five-year estimates; family means related by birth, marriage, or adoption.
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