Mercer County's estimated 2026 population is 107,382 with a growth rate of -0.35% in the past year according to the most recent United States census data. Mercer County is the 31st largest county in Pennsylvania. The 2010 population was 116,607 and has seen a growth of -7.91% since that time.
Data after 2023 is projected based on recent change
The racial composition of Mercer County includes 88.97% White, 5.57% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (88.97%)
Black or African American (5.57%)
Two or more races (3.98%)
Other race (0.72%)
Asian (0.63%)
Native American (0.11%)
Native Hawaiian or Pacific Islander (0.02%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 97,737 | 88.97% |
| Black or African American | 6,123 | 5.57% |
| Two or more races | 4,373 | 3.98% |
| Other race | 788 | 0.72% |
| Asian | 689 | 0.63% |
| Native American | 122 | 0.11% |
| Native Hawaiian or Pacific Islander | 20 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Mercer County's average per capita income is $44,354. Household income levels show a median of $60,614. The poverty rate stands at 12.75%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,341 | $108,124 |
| Families | $78,611 | $94,619 |
| Households | $60,614 | $78,316 |
| Non Families | $34,503 | $47,213 |
Average Income
Median Household Income
Poverty Rate