Allegheny County Demographics

A map of Allegheny County's Population by Race

Allegheny County, Pennsylvania had a population of 1,250,578 in 2020. It was 75.0% White, 12.9% Black, 4.7% Asian, 2.7% Hispanic, 0.6% Native American/Other, and 4.0% Multiracial. This map presents the population of Allegheny County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Allegheny County is the 2nd most populous county of the 67 counties in Pennsylvania.

Allegheny County's White Population

938,252 residents of Allegheny County identify as White, or 75.0%. This makes the White share of the population of Allegheny County roughly similar to the White share of the population of Pennsylvania (73.5% White). Of the 67 counties in Pennsylvania, Allegheny County is ranked #59 in terms of White residents as a share of the population.

Allegheny County is less White than neighboring Washington County (89.3% White), Beaver County (85.5% White), Butler County (91.9% White), Westmoreland County (91.1% White), and Hancock County (91% White).

Allegheny County's Black Population

161,554 residents of Allegheny County identify as Black, or 12.9%. This makes the Black share of the population of Allegheny County roughly similar to the Black share of the population of Pennsylvania (10.5% Black). Of the 67 counties in Pennsylvania, Allegheny County is ranked #6 in terms of Black residents as a share of the population.

Allegheny County is more Black than neighboring Washington County (3.3% Black), Beaver County (6.6% Black), Butler County (1.1% Black), Westmoreland County (2.5% Black), and Hancock County (2.4% Black).

Allegheny County's Asian Population

58,318 residents of Allegheny County identify as Asian, or 4.7%. This makes the Asian share of the population of Allegheny County roughly similar to the Asian share of the population of Pennsylvania (3.9% Asian). Of the 67 counties in Pennsylvania, Allegheny County is ranked #9 in terms of Asian residents as a share of the population.

Allegheny County is more Asian than neighboring Washington County (1% Asian), Beaver County (0.6% Asian), Butler County (1.4% Asian), Westmoreland County (0.9% Asian), and Hancock County (0.4% Asian).

Allegheny County's Hispanic Population

34,325 residents of Allegheny County identify as Hispanic, or 2.7%. This makes the Hispanic share of the population of Allegheny County slightly less than the Hispanic share of the population of Pennsylvania (8.1% Hispanic). Of the 67 counties in Pennsylvania, Allegheny County is ranked #31 in terms of Hispanic residents as a share of the population.

Allegheny County is more Hispanic than neighboring Washington County (1.9% Hispanic), Beaver County (2.1% Hispanic), Butler County (1.9% Hispanic), Westmoreland County (1.5% Hispanic), and Hancock County (1.5% Hispanic).

Allegheny County's Native American/Other Population

7,673 residents of Allegheny County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.6%. This makes the Native American/Other share of the population of Allegheny County roughly similar to the Native American/Other share of the population of Pennsylvania (0.6% Native American/Other). Of the 67 counties in Pennsylvania, Allegheny County is ranked #7 in terms of Native American/Other residents as a share of the population.

Allegheny County is more Native American/Other than neighboring Washington County (0.4% Native American/Other), Beaver County (0.5% Native American/Other), Butler County (0.4% Native American/Other), Westmoreland County (0.4% Native American/Other), and Hancock County (0.4% Native American/Other).

Allegheny County's Multiracial Population

50,456 residents of Allegheny County identify as Multiracial, or 4.0%. This makes the Multiracial share of the population of Allegheny County roughly similar to the Multiracial share of the population of Pennsylvania (3.5% Multiracial). Of the 67 counties in Pennsylvania, Allegheny County is ranked #8 in terms of Multiracial residents as a share of the population.

Allegheny County is more Multiracial than neighboring Butler County (3.2% Multiracial), and Westmoreland County (3.6% Multiracial). Allegheny County is less Multiracial than neighboring Washington County (4.1% Multiracial), Beaver County (4.6% Multiracial), and Hancock County (4.4% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.