Warren County Demographics

A map of Warren County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	35,720	36,310	94.2%	94.1%
Multiracial	1,138	1,431	3.0%	3.7%
Hispanic	481	415	1.3%	1.1%
Black	286	144	0.8%	0.4%
Asian	166	154	0.4%	0.4%
Native American/Other	129	133	0.3%	0.3%

Warren County, Pennsylvania has an estimated population of 37,920, a slight decrease from the 38,587 recorded in the 2020 Census. The population is 94.2% White, 3.0% Multiracial, 1.3% Hispanic, 0.8% Black, 0.4% Asian, and 0.3% Native American/Other. This demographic dot map shows the population of Warren County, with one dot drawn for each person counted by the Census, color-coded by race.

Warren is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than Pennsylvania overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Warren County, that probability was 11.3% in 2020 and 11.2% in the most recent ACS estimates.

Warren County is ranked the 55th most populous county in Pennsylvania, out of 67 counties. Warren County was ranked the 54th most populous county in the 2020 Census.

Warren County's White Population

35,720 residents of Warren County, or 94.2% of the population, identify as White. The share of White residents in Warren County is significantly higher than in Pennsylvania overall, where 73% of the population is White. Warren County ranks 7th statewide in terms of White residents as a share of the population, out of 67 counties.

Since the 2020 Census, Warren County's White population has declined by an estimated 1.6%. White residents' share of Warren County's population has remained roughly unchanged at 94.2%.

Warren County is more White than neighboring Forest County (78.3% White), Chautauqua County (83.7% White), Venango County (93.3% White), Clarion County (94.1% White), and McKean County (91.7% White).

Warren County's Black Population

286 residents of Warren County, or 0.8% of the population, identify as Black. The share of Black residents in Warren County is lower than in Pennsylvania overall, where 10.3% of the population is Black. Warren County ranks 62nd statewide in terms of Black residents as a share of the population, out of 67 counties.

Since the 2020 Census, Warren County's Black population has grown by an estimated 98.6%. Black residents' share of Warren County's population has remained roughly unchanged at 0.8%.

Warren County is less Black than neighboring Forest County (13.7% Black), Chautauqua County (2.1% Black), Venango County (1.2% Black), Clarion County (1.6% Black), and McKean County (2.1% Black).

Warren County's Asian Population

166 residents of Warren County, or 0.4% of the population, identify as Asian. The share of Asian residents in Warren County is slightly lower than in Pennsylvania overall, where 3.8% of the population is Asian. Warren County ranks 51st statewide in terms of Asian residents as a share of the population, out of 67 counties.

Since the 2020 Census, Warren County's Asian population has grown by an estimated 7.8%. Asian residents' share of Warren County's population has remained roughly unchanged at 0.4%.

Warren County is more Asian than neighboring Venango County (0.3% Asian). Warren County is less Asian than neighboring Chautauqua County (0.7% Asian), Clarion County (0.7% Asian), and McKean County (0.7% Asian).

Warren County's Hispanic Population

481 residents of Warren County, or 1.3% of the population, identify as Hispanic. The share of Hispanic residents in Warren County is lower than in Pennsylvania overall, where 8.7% of the population is Hispanic. Warren County ranks 62nd statewide in terms of Hispanic residents as a share of the population, out of 67 counties.

Since the 2020 Census, Warren County's Hispanic population has grown by an estimated 15.9%. Hispanic residents' share of Warren County's population has remained roughly unchanged at 1.3%.

Warren County is more Hispanic than neighboring Clarion County (1.2% Hispanic). Warren County is less Hispanic than neighboring Forest County (5.1% Hispanic), Chautauqua County (9.6% Hispanic), and McKean County (2% Hispanic).

Warren County's Native American/Other Population

129 residents of Warren County, or 0.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Warren County is comparable to the share in Pennsylvania overall, where 0.6% of the population is Native American/Other. Warren County ranks 50th statewide in terms of Native American/Other residents as a share of the population, out of 67 counties.

Since the 2020 Census, Warren County's Native American/Other population has declined by an estimated 3.0%. Native American/Other residents' share of Warren County's population has remained roughly unchanged at 0.3%.

Warren County is more Native American/Other than neighboring Clarion County (0.2% Native American/Other). Warren County is less Native American/Other than neighboring Forest County (0.4% Native American/Other), Chautauqua County (0.5% Native American/Other), Venango County (0.6% Native American/Other), and McKean County (0.4% Native American/Other).

Warren County's Multiracial Population

1,138 residents of Warren County, or 3.0% of the population, identify as Multiracial. The share of Multiracial residents in Warren County is comparable to the share in Pennsylvania overall, where 3.6% of the population is Multiracial. Warren County ranks 16th statewide in terms of Multiracial residents as a share of the population, out of 67 counties.

Since the 2020 Census, Warren County's Multiracial population has declined by an estimated 20.5%. Multiracial residents' share of Warren County's population has decreased from 3.7% to 3.0%.

Warren County is more Multiracial than neighboring Forest County (2% Multiracial), and Clarion County (2.3% Multiracial). Warren County is less Multiracial than neighboring Chautauqua County (3.4% Multiracial), Venango County (3.2% Multiracial), and McKean County (3.1% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.