Warren County, New Jersey Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 19th-largest in New Jersey
The population of Warren County, New Jersey is 110,238 as of the 2023 American Community Survey, making it the 19th-largest county in New Jersey. The median household income is $99,596, the median home value is $323,100, and the median age is 43.9.
The population of Warren County has grown 3.2% since 2010 (108,572 → 112,031), a +0.22% annualized rate.
110,238
Population
+0.22%
Annual growth
309
People / sq mi
$99,596
Median Income
$323,100
Median Home Value
Warren County covers 357 sq mi of land at 309.2 people per square mile.
About Warren County, NJ
Among US counties, Warren County stands out first on household income: a median of $99,596, above the US median of $78,538. Warren County is a county in New Jersey with a population of 110,238. It ranks #19 among counties in New Jersey by population.
Earnings sit at the high end: a median household income of $99,596, above the US median of $78,538. The poverty rate, 5.6%, is on the lower side for US counties and below the national 12.4%. The median home value is $323,100, with typical rent around $1,368.
Educational attainment is on the higher side for US counties — 36.4% of adults hold a four-year degree, near the national 35.0%. Remote work is on the higher side at 11.5%, below the national 14.0%, and the average commute runs about 34 minutes each way.
Taken together, the income and housing figures place Warren County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Warren County Population History (2010-2024)
The county of Warren County had a population of 108,572 in 2010 and 112,031 in 2024, a 3.2% growth over 14 years. The peak was 112,031 in 2024. Average annual growth rate: 0.23%.
112,031
Population (2024)
108,572
Population (2010)
112,031
Peak (2024)
0.23%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 108,572 |
| 2011 | 108,154 |
| 2012 | 107,586 |
| 2013 | 106,933 |
| 2014 | 107,022 |
| 2015 | 106,787 |
| 2016 | 106,102 |
| 2017 | 105,761 |
| 2018 | 105,709 |
| 2019 | 105,455 |
| 2020 | 109,520 |
| 2021 | 110,464 |
| 2022 | 110,885 |
| 2023 | 111,344 |
| 2024 | 112,031 |
Race & Ethnicity
| White | 80.1% |
| Black or African American | 5.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.8% |
| Two or More Races | 0.0% |
Age & Sex
43.9
Median Age
50.3%
Female
49.7%
Male
19.0%
Age 65+
Age Distribution
Children (under 15): 15.6% · Seniors (65+): 19.0%
Income & Poverty
| Median household income | $99,596$-1,454 vs state |
| Mean household income | $117,781 |
| Per-capita income | $48,232 |
| Poverty rate | 5.6%-1.4% vs state |
| Unemployment rate | 3.7% |
| Employment-to-population | 62.8% |
Top Industries by Employment
The largest employment sector in Warren County is professional & business services, accounting for 24.4% of workers.
How residents commute
1.3%
Drive alone
2.2%
Carpool
77.0%
Public transit
11.5%
Work from home
34.1 min
Avg commute
Housing
$323,100$-104,500 vs state
Median home value
$1,368
Median rent
74.3%
Homeownership rate
46,675
Total housing units
96.3%
Occupied
3.7%
Vacant
25.7%
Renter-occupied
Social & access
95.3%
With health insurance
94.9%
With broadband internet
24.7%
Foreign-born
5.6%
Veterans (18+)
11.7%
With a disability
85.4%
Speak language other than English at home
Education
94.0%
High School+
36.4%
Bachelor's+
Largest cities in New Jersey
Other counties in New Jersey
Part of New Jersey
Metro areas in New Jersey
County rankings
Frequently Asked Questions
Warren County, New Jersey has a population of 110,238 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 19th-largest county in New Jersey. Population density is 309 people per square mile.
The population of Warren County has grown 3.2% since 2010 (108,572 → 112,031), a +0.22% annualized rate.
The median household income in Warren County, New Jersey is $99,596, with mean (average) household income of $117,781 and per-capita income of $48,232. 5.6% of residents live below the federal poverty level.
In Warren County, the largest racial and ethnic groups are White (80.1%), Black or African American (5.5%), Hispanic or Latino (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Warren County, New Jersey is 43.9 years. Residents are 50.3% female and 49.7% male.
The median home value in Warren County is $323,100 and median monthly rent is $1,368. 74.3% of occupied housing units are owner-occupied. The county has 46,675 total housing units, 3.7% of which are vacant.
The largest employment sector in Warren County, New Jersey is professional, scientific, and management services, employing 24.4% of workers. The unemployment rate is 3.7%.
Newark is among the largest cities associated with Warren County, New Jersey, with a population of 307,188.
Warren County, NJ Climate
Warren County, NJ has an average annual temperature of 9.8°C (50°F) and receives about 1194 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.8°C
Avg Temp
1194
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 26° | 89 mm |
| February | -2° / 29° | 74 mm |
| March | 3° / 37° | 93 mm |
| April | 9° / 48° | 101 mm |
| May | 15° / 58° | 115 mm |
| June | 19° / 67° | 107 mm |
| July | 22° / 72° | 114 mm |
| August | 21° / 70° | 108 mm |
| September | 17° / 63° | 109 mm |
| October | 11° / 52° | 94 mm |
| November | 6° / 42° | 100 mm |
| December | 0° / 32° | 90 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Warren County, NJ
The most comfortable months to visit Warren County, NJ are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -8°C low). May is usually the wettest month.
Where to stay near Warren County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.