Colonia, New Jersey Demographics & Population 2026
During the 2020–2024 ACS period, Colonia, New Jersey had a total population of 18,587, the 65th largest community in New Jersey, with a median household income of $122,713, which is 18% higher than the state average. The poverty rate is 7.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Colonia Quick Facts
How Colonia 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 | 18,294 | 18,587 | +1.6% |
| Median household income | $134,301 | $122,713 | -8.6% |
| Median home value | $473,200 | $493,100 | +4.2% |
How Colonia 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
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 66 | National average: 61
Education
Educational Attainment (Adults 25+)
Colonia Rankings in New Jersey
Explore New Jersey Rankings
Other Cities in Middlesex County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| New Brunswick | 56,345 | $65,810 | 32.0% | $353,800 |
| Perth Amboy | 55,855 | $61,977 | 20.2% | $370,600 |
| Sayreville | 45,838 | $99,979 | 6.2% | $444,100 |
| Old Bridge | 28,236 | $111,996 | 6.9% | $485,800 |
| Carteret | 25,496 | $96,862 | 8.2% | $405,800 |
| South Plainfield | 24,473 | $130,239 | 3.0% | $470,900 |
| Woodbridge | 20,756 | $104,926 | 11.1% | $390,000 |
| Iselin | 19,551 | $109,500 | 7.9% | $426,800 |
| Avenel | 17,121 | $101,670 | 7.9% | $401,000 |
| South River | 16,124 | $96,147 | 12.5% | $405,200 |
Cities Similar to Colonia
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Dumont | 18,279 | $126,071 | $497,400 | 50.3% | 6.6% |
| Ocean Acres | 19,204 | $121,924 | $402,500 | 36.3% | 1.9% |
| Preakness | 18,520 | $133,205 | $617,700 | 57.1% | 3.3% |
| Tinton Falls | 19,361 | $117,308 | $478,000 | 54.3% | 6.8% |
| Point Pleasant | 19,334 | $115,625 | $575,300 | 50.0% | 4.5% |
Population Overview
Colonia is a small city located in New Jersey, within Middlesex County. The total population is 18,587. It ranks as the 65th most populous out of 700 Census-designated places in New Jersey.
Age Demographics
The median age in Colonia is 43.6 years. This is 9% higher than the state median of 40.1 years.
Economy, Income & Housing
The median household income in Colonia is $122,713. This is 18% higher than the state median of $103,556. It is also 52% higher than the national median of $80,734. The poverty rate stands at 7.4%. This is 24% lower than the state poverty rate of 9.7%. The unemployment rate is 4.9%. This is 22% lower than the state rate of 6.3%. The median home value is $493,100. Housing costs are 9% higher than the state median of $454,400. The home-value-to-income ratio is 4.0x. 88.9% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Colonia is White (non-Hispanic), making up 56.4% of the population. Hispanic or Latino residents account for 17.5%. The Black or African American population (5.1%) is well below the state average of 12.2%. The Asian population is significantly higher than the state average (15.6% vs 10.1%).
Education
48.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 12% higher than 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 91.6%. Notably, 18.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Colonia, 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.
Free data download: Get all New Jersey city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Colonia, New Jersey?
Colonia, New Jersey has a population of 18,587 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Colonia, NJ?
The median household income in Colonia is $122,713, which is 52% higher than the national median of $80,734.
What is the poverty rate in Colonia, NJ?
The poverty rate in Colonia is 7.4%. This means approximately 1,374 residents live below the federal poverty line.
What is the racial makeup of Colonia, New Jersey?
Colonia's population is 56.4% White, 5.1% Black, 17.5% Hispanic/Latino, and 15.6% Asian.
What is the median home value in Colonia, NJ?
The median home value in Colonia is $493,100. The home-value-to-income ratio is 4.0x.
How educated is Colonia, New Jersey?
48.7% of adults (25+) in Colonia hold a bachelor's degree or higher, and 18.3% hold a graduate or professional degree.