Irwin, Pennsylvania Demographics & Population 2026
During the 2020–2024 ACS period, Irwin, Pennsylvania had a total population of 3,831, the 381st largest borough in Pennsylvania, with a median household income of $59,963, which is 23% lower than the state average. The poverty rate is 13.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Irwin Quick Facts
How Irwin Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 3,862 | 3,831 | -0.8% |
| Median household income | $60,747 | $59,963 | -1.3% |
| Median home value | $198,700 | $195,500 | -1.6% |
How Irwin Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 45 | National average: 61
Education
Educational Attainment (Adults 25+)
Irwin Rankings in Pennsylvania
Explore Pennsylvania Rankings
Other Cities in Westmoreland County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Murrysville | 20,817 | $121,823 | 2.5% | $342,100 |
| Greensburg | 14,741 | $64,914 | 14.4% | $184,100 |
| New Kensington | 12,011 | $49,063 | 16.0% | $142,000 |
| Lower Burrell | 11,633 | $84,602 | 7.8% | $198,600 |
| Jeannette | 8,657 | $49,188 | 18.8% | $114,400 |
| Latrobe | 7,977 | $56,318 | 16.6% | $145,100 |
| Monessen | 6,780 | $52,889 | 20.8% | $95,900 |
| Vandergrift | 5,011 | $50,901 | 21.5% | $93,900 |
| Arnold | 4,704 | $45,417 | 25.5% | $86,400 |
| Level Green | 4,409 | $101,602 | 1.2% | $276,300 |
Cities Similar to Irwin
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Freeland | 3,837 | $57,833 | $118,000 | 21.8% | 24.0% |
| Baden | 3,843 | $63,400 | $150,400 | 25.0% | 8.4% |
| Brookville | 3,946 | $60,214 | $133,200 | 27.4% | 12.8% |
| Frackville | 3,878 | $56,866 | $103,400 | 14.9% | 18.8% |
| Waynesburg | 3,811 | $54,050 | $158,200 | 33.3% | 15.1% |
Population Overview
Irwin is a small community located in Pennsylvania, within Westmoreland County. The total population is 3,831. It ranks as the 381st most populous out of 1,991 Census-designated places in Pennsylvania.
Age Demographics
The median age in Irwin is 38.1 years. This is 7% lower than the state median of 40.9 years.
Economy, Income & Housing
The median household income in Irwin is $59,963. This is 23% lower than the state median of $77,971. It is also 26% lower than the national median of $80,734. The poverty rate stands at 13.5%. This is 15% higher than the state poverty rate of 11.7%. The unemployment rate is 2.7%. This is 49% lower than the state rate of 5.3%. The median home value is $195,500. Housing costs are 23% lower than the state median of $254,500. The home-value-to-income ratio is 3.3x. 43.1% of occupied housing units are owner-occupied. This homeownership rate is 38% lower than the state average of 69.3%.
Race & Ethnicity
Irwin has a predominantly White (non-Hispanic) population, comprising 88.9% of all residents. Hispanic or Latino residents account for 2.3%. The Black or African American population (0.7%) is well below the state average of 10.3%. The Hispanic or Latino population (2.3%) is well below the state average of 8.7%.
Education
35.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 2% higher than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.2%. Notably, 16.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Irwin, Pennsylvania is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Pennsylvania state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,991 Census-designated places in Pennsylvania. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Irwin, Pennsylvania?
Irwin, Pennsylvania has a population of 3,831 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Irwin, PA?
The median household income in Irwin is $59,963, which is 26% lower than the national median of $80,734.
What is the poverty rate in Irwin, PA?
The poverty rate in Irwin is 13.5%. This means approximately 514 residents live below the federal poverty line.
What is the racial makeup of Irwin, Pennsylvania?
Irwin's population is 88.9% White, 0.7% Black, 2.3% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Irwin, PA?
The median home value in Irwin is $195,500. The home-value-to-income ratio is 3.3x.
How educated is Irwin, Pennsylvania?
35.8% of adults (25+) in Irwin hold a bachelor's degree or higher, and 16.0% hold a graduate or professional degree.