Monongahela Flag

Monongahela

County Seat:
No
Area (mi²):
1.913
State:
Pennsylvania

Monongahela is a city located in Washington County, Pennsylvania. Monongahela has a 2025 population of 4,053 . Monongahela is currently declining at a rate of -0.47% annually and its population has decreased by -2.27% since the most recent census, which recorded a population of 4,147 in 2020.

The average household income in Monongahela is $72,220 with a poverty rate of 12.13%. The median age in Monongahela is 44.1 years: 41.2 years for males, and 48 years for females. For every 100 females there are 106.9 males.

4.1K
Total Population
2,119
Density (mi²)
-19 -0.47%
Growth

Monongahela Population

Monongahela Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Monongahela includes 93.44% White, and smaller percentages for Black or African American, other race and multiracial populations.

Population by Race

White (93.44%)

Two or more races (3.65%)

Black or African American (1.75%)

Other race (1.17%)

Race
Population
Percentage (of total)
White3,84393.44%
Two or more races1503.65%
Black or African American721.75%
Other race481.17%

Monongahela Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Monongahela's average per capita income is $41,742. Household income levels show a median of $55,500. The poverty rate stands at 12.13%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$84,753-
Families$79,500$94,544
Households$55,500$72,220
Non Families$31,667$42,202

$41,742

Average Income

$55,500

Median Household Income

12.13%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)