Monongahela, Pennsylvania Demographics & Population 2026
During the 2020–2024 ACS period, Monongahela, Pennsylvania had a total population of 4,109, the 352nd largest city in Pennsylvania, with a median household income of $59,861, which is 23% lower than the state average. The poverty rate is 12.3%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 1.9x.
Monongahela Quick Facts
How Monongahela 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 | 4,113 | 4,109 | -0.1% |
| Median household income | $55,500 | $59,861 | +7.9% |
| Median home value | $119,300 | $114,300 | -4.2% |
How Monongahela 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+)
Monongahela Rankings in Pennsylvania
Explore Pennsylvania Rankings
Other Cities in Washington County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Washington | 13,368 | $52,975 | 16.8% | $128,200 |
| Canonsburg | 9,675 | $79,227 | 6.3% | $213,200 |
| California | 4,864 | $48,606 | 28.9% | $152,200 |
| Donora | 4,527 | $39,544 | 29.6% | $62,300 |
| McGovern | 4,393 | $107,395 | 0.5% | $320,300 |
| McMurray | 4,286 | $155,077 | 2.6% | $391,700 |
| Charleroi | 4,202 | $43,265 | 30.8% | $52,800 |
| Thompsonville | 3,646 | $128,422 | 1.6% | $436,900 |
| Centerville (Washington County) | 3,235 | $71,250 | 4.5% | $120,600 |
| Gastonville | 2,995 | $68,487 | 2.7% | $173,300 |
Cities Similar to Monongahela
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Throop | 4,081 | $57,462 | $165,400 | 23.8% | 14.7% |
| Danville | 4,217 | $59,219 | $186,400 | 44.0% | 14.0% |
| Brookville | 3,946 | $60,214 | $133,200 | 27.4% | 12.8% |
| Dallastown | 4,185 | $63,517 | $188,500 | 24.9% | 7.3% |
| Larksville | 4,255 | $56,942 | $146,300 | 23.5% | 9.4% |
Population Overview
Monongahela is a small community located in Pennsylvania, within Washington County. The total population is 4,109. It ranks as the 352nd most populous out of 1,991 Census-designated places in Pennsylvania.
Age Demographics
The median age in Monongahela is 43.0 years. This is 5% higher than the state median of 40.9 years.
Economy, Income & Housing
The median household income in Monongahela is $59,861. 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 12.3%. This is 5% higher than the state poverty rate of 11.7%. The unemployment rate is 6.9%. This is 32% higher than the state rate of 5.3%. The median home value is $114,300. Housing costs are 55% lower than the state median of $254,500. With a home-value-to-income ratio of just 1.9x, Monongahela is one of the most affordable housing markets in the area. 69.1% of occupied housing units are owner-occupied.
Race & Ethnicity
Monongahela has a predominantly White (non-Hispanic) population, comprising 93.8% of all residents. Hispanic or Latino residents account for 2.6%. The Black or African American population (0.1%) is well below the state average of 10.3%. The Hispanic or Latino population (2.6%) is well below the state average of 8.7%.
Education
22.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 35% lower 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 96.1%.
Data Sources & Methodology
All demographic data for Monongahela, 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 Monongahela, Pennsylvania?
Monongahela, Pennsylvania has a population of 4,109 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Monongahela, PA?
The median household income in Monongahela is $59,861, which is 26% lower than the national median of $80,734.
What is the poverty rate in Monongahela, PA?
The poverty rate in Monongahela is 12.3%. This means approximately 504 residents live below the federal poverty line.
What is the racial makeup of Monongahela, Pennsylvania?
Monongahela's population is 93.8% White, 0.1% Black, 2.6% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Monongahela, PA?
The median home value in Monongahela is $114,300. The home-value-to-income ratio is 1.9x.
How educated is Monongahela, Pennsylvania?
22.8% of adults (25+) in Monongahela hold a bachelor's degree or higher, and 7.3% hold a graduate or professional degree.