Borough in Allegheny County, Pennsylvania · 14.2 sq mi · 1,303 people per sq mi
About 19,000 people live in West Mifflin. The typical household earns $76,563, and the median resident is 43.4 years old.
2026 projection
From 19,568 in 2020
Poverty rate 11.17%
Men 40.1 · Women 47.6
1940–2026
18,522
2026 projection
5.3% 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.
1940–2026
18,522
2026 projection
5.3% 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 | 18,522 | -185 | 0.99% |
|---|---|---|---|
| 2025 | 18,707 | -124 | 0.66% |
| 2024 | 18,831 | -148 | 0.78% |
| 2023 | 18,979 | -169 | 0.88% |
| 2022 | 19,148 | -239 | 1.23% |
| 2021 | 19,387 | -181 | 0.92% |
| 2020 | 19,568 | -134 | 0.68% |
| 2019 | 19,702 | +14 | 0.07% |
| 2018 | 19,688 | -113 | 0.57% |
| 2017 | 19,801 | -149 | 0.75% |
Showing 10 of 24 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 192 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 9 residents
47% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 47% | 47% | 47% |
| Never married | 34% | 38% | 31% |
| Divorced | 10% | 11% | 10% |
| Widowed | 7% | 3% | 11% |
| Separated | 2% | 2% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau