Median Age in Monmouth County, NJ
ACS 2024 5-Year Estimates
43.2 years
Rank #1,163/3,222 · #5 in NJ
64th
Monmouth 43.2 years
NJ 40.1 years +7.7%
US 38.9 years +11.1%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Monmouth County's median age of 43.2 years compares to all 3,222 U.S. counties. Values range from 21.4 years to 86.2 years.
Distribution of Median Age Across All Counties
Ranking Context
Counties ranked closest to Monmouth County for median age.
Nearby Rankings
Full ranking →| #1,160 | Beaverhead County, MT | 43.2 years |
| #1,161 | Merrick County, NE | 43.2 years |
| #1,162 | Lyon County, NV | 43.2 years |
| #1,163 | Monmouth County, NJ | 43.2 years |
| #1,164 | Walsh County, ND | 43.2 years |
| #1,165 | Mahoning County, OH | 43.2 years |
| #1,166 | Morrow County, OH | 43.2 years |
About Median Age
Monmouth County, New Jersey has a median age of 43.2 years, ranking #1,163 of 3,222 counties nationwide — 11.1% above the national value of 38.9 years. Within New Jersey, it ranks #5 of 21. This places it in the 64th percentile nationally.
The median age of the total population. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.