Warren County Population

1790–2026

18,741

2026 projection

0.7% since 2020 (increase)

05K10K15K20K25K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Warren County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202618,741-1570.83%
202518,898-1570.82%
202419,055+3161.69%
202318,739+480.26%
202218,691-1440.76%
202118,835+2291.23%
202018,606-1,0865.51%
201919,692-1230.62%
201819,815-140.07%
201719,829-450.23%

Showing 10 of 38 years.

Warren County Demographics

49.6median age

Median age

Female52.8 yrs
Male47.3 yrs

Adults

15,474
5,212 seniors (65+) · 34% of adults10,262 other adults

Sex

Female 49.7% · 9,333Male 50.3% · 9,462

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 188 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Warren County Income

$50,638median household income

Median household income

$50,638

Half of households earn more, half earn less

Median earnings

$37,093

Typical yearly pay for a worker 25 or older.

Poverty rate

21.1%

About 1 in 5 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Warren County Marital Status

41% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married41%43%38%
Never married32%33%30%
Divorced15%15%14%
Widowed10%5%15%
Separated3%5%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201