City in Washington County, Pennsylvania · 1.9 sq mi · 2,102 people per sq mi
About 4,000 people live in Monongahela. The typical household earns $59,861, and the median resident is 43 years old.
2026 projection
From 4,138 in 2020
Poverty rate 12.27%
Men 41.1 · Women 45.4
1840–2026
4,021
2026 projection
2.8% 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.
1840–2026
4,021
2026 projection
2.8% 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 | 4,021 | -20 | 0.49% |
|---|---|---|---|
| 2025 | 4,041 | -18 | 0.44% |
| 2024 | 4,059 | -20 | 0.49% |
| 2023 | 4,079 | -15 | 0.37% |
| 2022 | 4,094 | -27 | 0.66% |
| 2021 | 4,121 | -17 | 0.41% |
| 2020 | 4,138 | +31 | 0.75% |
| 2019 | 4,107 | -23 | 0.56% |
| 2018 | 4,130 | -18 | 0.43% |
| 2017 | 4,148 | -18 | 0.43% |
Showing 10 of 34 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 41 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 8 residents
42% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 42% | 42% | 43% |
| Never married | 33% | 40% | 25% |
| Divorced | 13% | 15% | 12% |
| Widowed | 9% | 2% | 17% |
| Separated | 2% | 2% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau