Mercer County's estimated 2025 population is 383,455 with a growth rate of 0.23% in the past year according to the most recent United States census data. Mercer County is the 12th largest county in New Jersey. The 2010 population was 367,717 and has seen a growth of 4.28% since that time.
Data after 2023 is projected based on recent change
The racial composition of Mercer County includes 49.79% White, 19.19% Black or African American, 12.06% Asian, 9.13% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Black or African American
Asian
Other race
Two or more races
Native American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 190,842 | 49.79% |
| Black or African American | 73,554 | 19.19% |
| Asian | 46,234 | 12.06% |
| Other race | 35,007 | 9.13% |
| Two or more races | 34,872 | 9.1% |
| Native American | 2,693 | 0.7% |
| Native Hawaiian or Pacific Islander | 84 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Mercer County's average per capita income is $60,087. Household income levels show a median of $96,333. The poverty rate stands at 11.07%.
Name | Median | Mean |
|---|---|---|
| Married Families | $151,725 | $204,394 |
| Families | $124,699 | $171,047 |
| Households | $96,333 | $138,732 |
| Non Families | $51,896 | $71,512 |
Average Income
Median Household Income
Poverty Rate