Mercerville, New Jersey Demographics & Population 2026
During the 2020–2024 ACS period, Mercerville, New Jersey had a total population of 13,535, the 99th largest community in New Jersey, with a median household income of $128,277, which is 24% higher than the state average. The poverty rate is 3.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- An exceptionally low poverty rate of 3.2% — among the lowest in New Jersey.
Mercerville Quick Facts
How Mercerville Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 13,693 | 13,535 | -1.2% |
| Median household income | $125,678 | $128,277 | +2.1% |
| Median home value | $330,500 | $358,600 | +8.5% |
How Mercerville Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 66 | National average: 61
Education
Educational Attainment (Adults 25+)
Mercerville Rankings in New Jersey
Explore New Jersey Rankings
Other Cities in Mercer County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Trenton | 90,338 | $52,537 | 21.6% | $160,700 |
| Princeton | 30,756 | $192,079 | 6.1% | $1,050,600 |
| Hamilton Square | 11,622 | $138,162 | 2.3% | $397,000 |
| White Horse | 10,507 | $105,758 | 2.6% | $308,200 |
| Twin Rivers | 8,382 | $100,833 | 3.5% | $301,400 |
| Yardville | 6,301 | $103,274 | 13.2% | $360,100 |
| Hightstown | 5,920 | $108,987 | 2.1% | $342,600 |
| Lawrenceville | 3,924 | $122,614 | 0.3% | $411,900 |
| Robbinsville Center | 3,777 | $134,388 | 11.1% | $526,300 |
| The College of New Jersey | 3,658 | N/A | 87.2% | N/A |
Cities Similar to Mercerville
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Franklin Park | 13,211 | $114,946 | $336,600 | 54.4% | 11.0% |
| Westmont | 14,195 | $115,317 | $422,200 | 59.9% | 5.8% |
| Edgewater | 14,759 | $124,050 | $715,700 | 72.7% | 7.7% |
| West Freehold | 14,883 | $130,800 | $529,000 | 53.1% | 4.0% |
| Florham Park | 13,564 | $158,696 | $791,400 | 69.9% | 8.7% |
Population Overview
Mercerville is a small city located in New Jersey, within Mercer County. The total population is 13,535. It ranks as the 99th most populous out of 700 Census-designated places in New Jersey.
Age Demographics
The median age in Mercerville is 45.1 years. This is 12% higher than the state median of 40.1 years. 11.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Mercerville is $128,277. This is 24% higher than the state median of $103,556. It is also 59% higher than the national median of $80,734. The poverty rate stands at 3.2%. This is 67% lower than the state poverty rate of 9.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.6%. This is 27% lower than the state rate of 6.3%. The median home value is $358,600. Housing costs are 21% lower than the state median of $454,400. With a home-value-to-income ratio of just 2.8x, Mercerville is one of the most affordable housing markets in the area. 84.7% of occupied housing units are owner-occupied. This homeownership rate is 33% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Mercerville is White (non-Hispanic), making up 70.6% of the population. Hispanic or Latino residents account for 16.4%. The Asian population (4.2%) is well below the state average of 10.1%.
Education
43.7% of residents aged 25 and older hold a bachelor's degree or higher. This is about the same as the state rate of 43.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.2%. Notably, 15.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Mercerville, New Jersey is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New Jersey state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 700 Census-designated places in New Jersey. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Mercerville, New Jersey?
Mercerville, New Jersey has a population of 13,535 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Mercerville, NJ?
The median household income in Mercerville is $128,277, which is 59% higher than the national median of $80,734.
What is the poverty rate in Mercerville, NJ?
The poverty rate in Mercerville is 3.2%. This means approximately 424 residents live below the federal poverty line.
What is the racial makeup of Mercerville, New Jersey?
Mercerville's population is 70.6% White, 6.4% Black, 16.4% Hispanic/Latino, and 4.2% Asian.
What is the median home value in Mercerville, NJ?
The median home value in Mercerville is $358,600. The home-value-to-income ratio is 2.8x.
How educated is Mercerville, New Jersey?
43.7% of adults (25+) in Mercerville hold a bachelor's degree or higher, and 15.0% hold a graduate or professional degree.