Mercer County Demographics

A map of Mercer County's Population by Race

Mercer County, Pennsylvania had a population of 110,652 in 2020. It was 87.7% White, 5.7% Black, 0.6% Asian, 1.5% Hispanic, 0.4% Native American/Other, and 4.2% Multiracial. This map presents the population of Mercer County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Mercer County is the 30th most populous county of the 67 counties in Pennsylvania.

Mercer County's White Population

96,998 residents of Mercer County identify as White, or 87.7%. This makes the White share of the population of Mercer County larger than the White share of the population of Pennsylvania (73.5% White). Of the 67 counties in Pennsylvania, Mercer County is ranked #40 in terms of White residents as a share of the population.

Mercer County is more White than neighboring Trumbull County (84% White). Mercer County is less White than neighboring Lawrence County (88.1% White), Crawford County (92.1% White), Venango County (93.4% White), and Butler County (91.9% White).

Mercer County's Black Population

6,289 residents of Mercer County identify as Black, or 5.7%. This makes the Black share of the population of Mercer County roughly similar to the Black share of the population of Pennsylvania (10.5% Black). Of the 67 counties in Pennsylvania, Mercer County is ranked #12 in terms of Black residents as a share of the population.

Mercer County is more Black than neighboring Lawrence County (4.1% Black), Crawford County (1.8% Black), Venango County (0.9% Black), and Butler County (1.1% Black). Mercer County is less Black than neighboring Trumbull County (8.4% Black).

Mercer County's Asian Population

683 residents of Mercer County identify as Asian, or 0.6%. This makes the Asian share of the population of Mercer County roughly similar to the Asian share of the population of Pennsylvania (3.9% Asian). Of the 67 counties in Pennsylvania, Mercer County is ranked #36 in terms of Asian residents as a share of the population.

Mercer County is more Asian than neighboring Lawrence County (0.4% Asian), Crawford County (0.4% Asian), Trumbull County (0.5% Asian), and Venango County (0.3% Asian). Mercer County is less Asian than neighboring Butler County (1.4% Asian).

Mercer County's Hispanic Population

1,609 residents of Mercer County identify as Hispanic, or 1.5%. This makes the Hispanic share of the population of Mercer County slightly less than the Hispanic share of the population of Pennsylvania (8.1% Hispanic). Of the 67 counties in Pennsylvania, Mercer County is ranked #55 in terms of Hispanic residents as a share of the population.

Mercer County is more Hispanic than neighboring Venango County (1.1% Hispanic). Mercer County is less Hispanic than neighboring Lawrence County (1.9% Hispanic), Trumbull County (2.1% Hispanic), and Butler County (1.9% Hispanic).

Mercer County's Native American/Other Population

472 residents of Mercer County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.4%. This makes the Native American/Other share of the population of Mercer 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, Mercer County is ranked #37 in terms of Native American/Other residents as a share of the population.

Mercer County is more Native American/Other than neighboring Venango County (0.3% Native American/Other).

Mercer County's Multiracial Population

4,601 residents of Mercer County identify as Multiracial, or 4.2%. This makes the Multiracial share of the population of Mercer County roughly similar to the Multiracial share of the population of Pennsylvania (3.5% Multiracial). Of the 67 counties in Pennsylvania, Mercer County is ranked #6 in terms of Multiracial residents as a share of the population.

Mercer County is more Multiracial than neighboring Crawford County (3.7% Multiracial), Venango County (3.9% Multiracial), and Butler County (3.2% Multiracial). Mercer County is less Multiracial than neighboring Lawrence County (5.1% Multiracial), and Trumbull County (4.6% Multiracial).

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