Borough in Westmoreland County, Pennsylvania · 0.8 sq mi · 4,465 people per sq mi
About 3,700 people live in Irwin. The typical household earns $59,963, and the median resident is 38.1 years old.
2026 projection
From 3,874 in 2020
Poverty rate 13.49%
Men 34.9 · Women 38.5
1820–2026
3,736
2026 projection
3.6% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1820–2026
3,736
2026 projection
3.6% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 3,736 | -23 | 0.61% |
|---|---|---|---|
| 2025 | 3,759 | -24 | 0.63% |
| 2024 | 3,783 | -17 | 0.45% |
| 2023 | 3,800 | -19 | 0.50% |
| 2022 | 3,819 | -34 | 0.88% |
| 2021 | 3,853 | -21 | 0.54% |
| 2020 | 3,874 | +125 | 3.33% |
| 2019 | 3,749 | -26 | 0.69% |
| 2018 | 3,775 | -25 | 0.66% |
| 2017 | 3,800 | -36 | 0.94% |
Showing 10 of 32 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 38 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 7 residents
36% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 36% | 49% | 28% |
| Never married | 41% | 36% | 43% |
| Divorced | 16% | 14% | 17% |
| Widowed | 8% | 2% | 12% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau