Plum, Pennsylvania Demographics & Population 2026
During the 2020–2024 ACS period, Plum, Pennsylvania had a total population of 26,723, the 23rd largest borough in Pennsylvania, with a median household income of $98,705, which is 27% higher than the state average. The poverty rate is 3.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- An exceptionally low poverty rate of 3.6% — among the lowest in Pennsylvania.
- Housing is very affordable with a home-value-to-income ratio of just 2.3x.
Plum Quick Facts
How Plum 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 | 26,873 | 26,723 | -0.6% |
| Median household income | $98,475 | $98,705 | +0.2% |
| Median home value | $218,600 | $227,600 | +4.1% |
How Plum 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+)
Plum Rankings in Pennsylvania
Explore Pennsylvania Rankings
Other Cities in Allegheny County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Pittsburgh | 304,759 | $65,742 | 20.1% | $205,800 |
| Bethel Park | 32,881 | $107,090 | 4.0% | $273,400 |
| Monroeville | 28,295 | $79,218 | 10.7% | $209,800 |
| Allison Park | 22,045 | $113,822 | 3.6% | $346,900 |
| Baldwin | 21,057 | $80,983 | 9.5% | $208,400 |
| West Mifflin | 19,190 | $76,563 | 11.2% | $151,600 |
| McKeesport | 17,380 | $34,219 | 32.0% | $72,700 |
| Franklin Park | 15,235 | $176,875 | 0.7% | $485,600 |
| Whitehall | 14,811 | $89,404 | 6.7% | $236,200 |
| Wilkinsburg | 14,027 | $46,416 | 20.4% | $155,500 |
Cities Similar to Plum
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| King of Prussia | 25,857 | $117,912 | $436,200 | 65.7% | 4.5% |
| Monroeville | 28,295 | $79,218 | $209,800 | 46.4% | 10.7% |
| Drexel Hill | 30,451 | $88,168 | $266,400 | 46.0% | 7.8% |
| Bethel Park | 32,881 | $107,090 | $273,400 | 53.5% | 4.0% |
| Allison Park | 22,045 | $113,822 | $346,900 | 61.8% | 3.6% |
Population Overview
Plum is a mid-sized community located in Pennsylvania, within Allegheny County. The total population is 26,723. It ranks as the 23rd most populous out of 1,991 Census-designated places in Pennsylvania.
Age Demographics
The median age in Plum is 44.4 years. This is 9% higher than the state median of 40.9 years.
Economy, Income & Housing
The median household income in Plum is $98,705. This is 27% higher than the state median of $77,971. It is also 22% higher than the national median of $80,734. The poverty rate stands at 3.6%. This is 70% lower than the state poverty rate of 11.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.8%. This is 47% lower than the state rate of 5.3%. The median home value is $227,600. Housing costs are 11% lower than the state median of $254,500. With a home-value-to-income ratio of just 2.3x, Plum is one of the most affordable housing markets in the area. 80.7% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 69.3%.
Race & Ethnicity
Plum has a predominantly White (non-Hispanic) population, comprising 90.9% of all residents. Black or African American residents account for 3.9%. The Black or African American population (3.9%) is well below the state average of 10.3%. The Hispanic or Latino population (1.1%) is well below the state average of 8.7%. The Asian population (1.3%) is well below the state average of 3.8%.
Education
45.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 28% higher 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 97.8%. Notably, 17.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Plum, 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 Plum, Pennsylvania?
Plum, Pennsylvania has a population of 26,723 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Plum, PA?
The median household income in Plum is $98,705, which is 22% higher than the national median of $80,734.
What is the poverty rate in Plum, PA?
The poverty rate in Plum is 3.6%. This means approximately 951 residents live below the federal poverty line.
What is the racial makeup of Plum, Pennsylvania?
Plum's population is 90.9% White, 3.9% Black, 1.1% Hispanic/Latino, and 1.3% Asian.
What is the median home value in Plum, PA?
The median home value in Plum is $227,600. The home-value-to-income ratio is 2.3x.
How educated is Plum, Pennsylvania?
45.0% of adults (25+) in Plum hold a bachelor's degree or higher, and 17.2% hold a graduate or professional degree.