Monmouth County's estimated 2026 population is 653,397 with a growth rate of 0.36% in the past year according to the most recent United States census data. Monmouth County is the 6th largest county in New Jersey. The 2010 population was 630,454 and has seen a growth of 3.64% since that time.
Data after 2023 is projected based on recent change
Overall: 43.2 years
Female: 44.6 years
Male: 41.9 years
There are 510,607 adults, (123,370 of whom are seniors) in Monmouth County.
Female: 329,001 (51%)
Male: 316,352 (49%)
The racial composition of Monmouth County includes 74.43% White, 5.99% Black or African American, 5.46% Asian, 4.86% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 480,349 | 74.43% |
| Two or more races | 55,623 | 8.62% |
| Black or African American | 38,675 | 5.99% |
| Asian | 35,205 | 5.46% |
| Other race | 31,366 | 4.86% |
| Native American | 3,886 | 0.6% |
| Native Hawaiian or Pacific Islander | 249 | 0.04% |
Monmouth County's average per capita income is $75,260. Household income levels show a median of $124,845. The poverty rate stands at 6.49%.
Name | Median | Mean |
|---|---|---|
| Married Families | $179,231 | $225,347 |
| Families | $157,997 | $202,952 |
| Households | $124,845 | $170,714 |
| Non Families | $64,207 | $95,696 |
Average Income
Median Household Income
Poverty Rate