Mercer County
Mercer County has notably lower household income than the US average, with a median household income of $59,976. Population has declined 9% since 2000. Median home value has more than doubled since 2000, reaching $164,000. With a median age of 45.1, the population is older than the US median of 38.9.
Population & growth
PEP 2025 EST:107,860 residents (Census Bureau Vintage 2025, released March 2026)
Income & economy
Housing
Race & ethnicity
Detailed origins & ancestry
+ 1 more hispanic origin group with data
+ 42 more ancestry groups with data
Education
Commute & transportation
Work & employment
People & community
Places similar to Mercer County
Compare Mercer County to nearby counties
How many people live in Mercer County, Pennsylvania?
Mercer County, Pennsylvania has about 109,257 residents according to the 2024 American Community Survey.
What is the median household income in Mercer County, Pennsylvania?
The typical household in Mercer County, Pennsylvania earns about $59,976 a year. Half of households make more than that, and half make less.
Is Mercer County, Pennsylvania expensive?
In Mercer County, Pennsylvania, the median home is worth about $164,000, and the typical rent is about $843 a month.
How educated are people in Mercer County, Pennsylvania?
About 25.6% of adults age 25 and over in Mercer County, Pennsylvania hold a bachelor's degree or higher.
What is the poverty rate in Mercer County, Pennsylvania?
About 13.2% of people in Mercer County, Pennsylvania live below the federal poverty line.
Has Mercer County, Pennsylvania grown since 1990?
Yes, Mercer County, Pennsylvania has shrunk since 1990. The population has lost about 11,746 residents, a change of about -10 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024