Demographics of Warren County, New Jersey

Warren County, New Jersey had 112,953 people on July 1, 2025, by the Census Bureau’s estimate: +3,522 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Warren County, in four figures

112,953
Population: July 1, 2025, Vintage 2025 estimate.; +3.2%
Change since July 2020: +3,522 people.; 44.0 ±0.3
Median age: ACS 2020–⁠2024.; $100,869 ±$3,607
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Warren County, New Jersey's population grew 3.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Warren County, New Jersey's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Warren County, New Jersey's population grew 3.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Warren County, New Jersey's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	109,431	100.0	100.0
2021	110,580	101.0	100.2
2022	111,018	101.5	100.7
2023	111,651	102.0	101.6
2024	112,424	102.7	102.5
2025	112,953	103.2	103.1

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Population of Warren County, New Jersey on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	109,431	−199	−174	0	−48
2021	110,580	+1,149	−79	+71	+1,106
2022	111,018	+438	−186	+300	+408
2023	111,651	+633	−138	+486	+320
2024	112,424	+773	−78	+540	+323
2025	112,953	+529	−53	+181	+404

Age, 2020–2024

The median age is 44.0 ±0.3: for men 42.7 ±0.6 and for women 45.5 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Warren County by age, ACS 2020–2024
Age	People	Share	New Jersey	United States
Under 5	5,127 ±127	4.6% ±0.1	5.6% ±<0.1	5.6% ±<0.1
5 to 17	16,266 ±613	14.7% ±0.6	16.2% ±0.1	16.3% ±<0.1
18 to 24	8,641 ±552	7.8% ±0.5	8.4% ±0.1	9.1% ±<0.1
25 to 44	26,654 ±796	24.0% ±0.7	26.2% ±0.1	26.9% ±<0.1
45 to 64	32,489 ±894	29.3% ±0.8	26.5% ±0.1	24.8% ±<0.1
65 and over	21,672 ±885	19.6% ±0.8	17.2% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $100,869 ±$3,607, and income per person $48,600 ±$1,311, in 2024 dollars. The median is $103,556 ±$513 in New Jersey and $80,734 ±$166 in the United States.

Households by income

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Households in Warren County by income, ACS 2020–2024
Household income	Households	Share	New Jersey	United States
Under $25,000	5,040 ±583	11.1% ±1.3	11.6% ±0.2	14.6% ±<0.1
$25,000 to $49,999	5,606 ±629	12.4% ±1.4	12.8% ±0.2	16.7% ±<0.1
$50,000 to $74,999	6,612 ±613	14.6% ±1.3	12.8% ±0.2	15.5% ±<0.1
$75,000 to $99,999	5,233 ±495	11.5% ±1.1	11.3% ±0.2	12.6% ±<0.1
$100,000 to $149,999	10,713 ±767	23.6% ±1.7	18.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	5,613 ±628	12.4% ±1.4	11.8% ±0.2	9.6% ±<0.1
$200,000 or more	6,574 ±501	14.5% ±1.1	21.6% ±0.2	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Warren County by age, ACS 2020–2024
Age	Below poverty	Rate	New Jersey	United States
All ages	9,130 ±1,088	8.3% ±1.0	9.7% ±0.2	12.5% ±0.1
Under 18	2,218 ±427	10.4% ±2.0	13.0% ±0.3	16.1% ±0.1
18 to 59	4,698 ±678	8.1% ±1.2	8.6% ±0.2	11.6% ±0.1
60 and over	2,214 ±319	7.3% ±1.0	9.3% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Warren County, ACS 2020–2024
Measure	Warren County	New Jersey	United States
Housing units	46,789 ±53	3,791,354 ±469	143,775,355 ±10,234
Occupied	97.0% ±0.7	92.5% ±0.1	89.9% ±0.1
Vacant	3.0% ±0.7	7.5% ±0.1	10.1% ±0.1
Owner occupied	75.1% ±1.5	63.8% ±0.3	65.2% ±0.3
Renter occupied	24.9% ±1.4	36.2% ±0.2	34.8% ±0.1
Median home value	$346,500 ±$6,745	$454,400 ±$1,150	$332,700 ±$236
Median gross rent	$1,409 ±$39	$1,720 ±$7	$1,413 ±$2
Median year built	1972 ±2	1970 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Warren County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	New Jersey	United States
Hispanic or Latino	14,378 ±0	13.0% ±<0.1	22.5% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	82,718 ±397	74.6% ±0.4	50.9% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	6,204 ±395	5.6% ±0.4	12.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	3,349 ±247	3.0% ±0.2	10.0% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	25 to 93	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 66	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	250 ±117	0.2% ±0.1	0.8% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	3,867 ±633	3.5% ±0.6	3.5% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Warren County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	New Jersey	United States
Born in the state	70,183 ±1,579	63.3% ±1.4	50.8% ±0.2	57.3% ±<0.1
Born in another state	27,615 ±1,328	24.9% ±1.2	22.7% ±0.1	26.9% ±<0.1
Born a citizen outside the states	1,280 ±277	1.2% ±0.2	2.6% ±<0.1	1.7% ±<0.1
Born abroad	11,771 ±834	10.6% ±0.8	23.9% ±0.2	14.1% ±<0.1
Naturalized citizens	7,650 ±572	6.9% ±0.5	13.5% ±0.1	7.4% ±<0.1
Not citizens	4,121 ±592	3.7% ±0.5	10.5% ±0.1	6.8% ±<0.1

Warren County among the counties of New Jersey

19th of 21 by population, July 2025. Every one is listed on the New Jersey page.

Counties of New Jersey near Warren County in population, July 2025
County	July 2025	Change since 2020
Gloucester County	312,638	+3.3%
Atlantic County	278,657	+1.6%
Cumberland County	157,148	+2.2%
Sussex County	148,063	+2.9%
Hunterdon County	131,781	+2.3%
Warren County	112,953	+3.2%
Cape May County	93,390	−1.7%
Salem County	66,280	+2.3%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026