Warren County, New Jersey Demographics 2026

Population Overview

Warren County is located in New Jersey with a total population of 110,849. It is the 19th most populous county out of 21 in New Jersey. The county encompasses 41 Census-designated places.

Age Demographics

The median age in Warren County is 44.0 years. This is 10% higher than the state median of 40.1 years.

Economy, Income & Housing

The median household income in Warren County is $100,869. This is 3% lower than the state median of $103,556. It is also 25% higher than the national median of $80,734. The poverty rate stands at 8.3%. This is 14% lower than the state poverty rate of 9.7%. The unemployment rate is 5.1%. This is 19% lower than the state rate of 6.3%. The median home value is $346,500. Housing costs are 24% lower than the state median of $454,400. The home-value-to-income ratio is 3.4x. 75.1% of occupied housing units are owner-occupied. This homeownership rate is 18% higher than the state average of 63.8%.

Race & Ethnicity

The largest racial or ethnic group in Warren County is White (non-Hispanic), making up 74.6% of the population. Hispanic or Latino residents account for 13.0%. The Black or African American population (5.6%) is well below the state average of 12.2%. The Asian population (3.0%) is well below the state average of 10.1%.

Education

36.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 16% lower 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 94.1%.

Data Sources & Methodology

All figures for Warren County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against New Jersey and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.