Chester County Demographics

A map of Chester County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	413,154	405,476	75.4%	75.9%
Hispanic	45,958	43,542	8.4%	8.1%
Asian	36,881	35,143	6.7%	6.6%
Black	26,727	28,391	4.9%	5.3%
Multiracial	22,698	18,961	4.1%	3.5%
Native American/Other	2,422	2,900	0.4%	0.5%

Chester County, Pennsylvania has an estimated population of 547,840, a slight increase from the 534,413 recorded in the 2020 Census. The population is 75.4% White, 8.4% Hispanic, 6.7% Asian, 4.9% Black, 4.1% Multiracial, and 0.4% Native American/Other. This demographic dot map shows the population of Chester County, with one dot drawn for each person counted by the Census, color-coded by race.

Chester has become slightly more racially diverse since the 2020 Census. It is 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 Chester County, that probability was 40.9% in 2020 and 41.6% in the most recent ACS estimates.

Chester County is ranked the 7th most populous county in Pennsylvania, out of 67 counties. Chester County was ranked the 7th most populous county in the 2020 Census.

Chester County's White Population

413,154 residents of Chester County, or 75.4% of the population, identify as White. The share of White residents in Chester County is slightly higher than in Pennsylvania overall, where 73% of the population is White. Chester County ranks 57th statewide in terms of White residents as a share of the population, out of 67 counties.

Since the 2020 Census, Chester County's White population has grown by an estimated 1.9%. White residents' share of Chester County's population has decreased from 75.9% to 75.4%.

Chester County is more White than neighboring Delaware County (62.4% White), New Castle County (52.3% White), Montgomery County (71.5% White), and Berks County (66.6% White). Chester County is less White than neighboring Cecil County (80.4% White).

Chester County's Black Population

26,727 residents of Chester County, or 4.9% of the population, identify as Black. The share of Black residents in Chester County is lower than in Pennsylvania overall, where 10.3% of the population is Black. Chester County ranks 15th statewide in terms of Black residents as a share of the population, out of 67 counties.

Since the 2020 Census, Chester County's Black population has declined by an estimated 5.9%. Black residents' share of Chester County's population has remained roughly unchanged at 4.9%.

Chester County is more Black than neighboring Berks County (4% Black). Chester County is less Black than neighboring Delaware County (21.9% Black), New Castle County (24.9% Black), Montgomery County (9.2% Black), and Cecil County (7.1% Black).

Chester County's Asian Population

36,881 residents of Chester County, or 6.7% of the population, identify as Asian. The share of Asian residents in Chester County is slightly higher than in Pennsylvania overall, where 3.8% of the population is Asian. Chester County ranks 4th statewide in terms of Asian residents as a share of the population, out of 67 counties.

Since the 2020 Census, Chester County's Asian population has grown by an estimated 4.9%. Asian residents' share of Chester County's population has remained roughly unchanged at 6.7%.

Chester County is more Asian than neighboring Delaware County (6.3% Asian), New Castle County (6.2% Asian), Cecil County (1.2% Asian), and Berks County (1.3% Asian). Chester County is less Asian than neighboring Montgomery County (8% Asian).

Chester County's Hispanic Population

45,958 residents of Chester County, or 8.4% of the population, identify as Hispanic. The share of Hispanic residents in Chester County is comparable to the share in Pennsylvania overall, where 8.7% of the population is Hispanic. Chester County ranks 13th statewide in terms of Hispanic residents as a share of the population, out of 67 counties.

Since the 2020 Census, Chester County's Hispanic population has grown by an estimated 5.5%. Hispanic residents' share of Chester County's population has remained roughly unchanged at 8.4%.

Chester County is more Hispanic than neighboring Delaware County (5% Hispanic), Montgomery County (6.7% Hispanic), and Cecil County (5.6% Hispanic). Chester County is less Hispanic than neighboring New Castle County (11.8% Hispanic), and Berks County (24.8% Hispanic).

Chester County's Native American/Other Population

2,422 residents of Chester County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Chester County is comparable to the share in Pennsylvania overall, where 0.6% of the population is Native American/Other. Chester County ranks 13th statewide in terms of Native American/Other residents as a share of the population, out of 67 counties.

Since the 2020 Census, Chester County's Native American/Other population has declined by an estimated 16.5%. Native American/Other residents' share of Chester County's population has remained roughly unchanged at 0.4%.

Chester County is less Native American/Other than neighboring Delaware County (0.6% Native American/Other), New Castle County (0.6% Native American/Other), Montgomery County (0.6% Native American/Other), Cecil County (0.7% Native American/Other), and Berks County (0.5% Native American/Other).

Chester County's Multiracial Population

22,698 residents of Chester County, or 4.1% of the population, identify as Multiracial. The share of Multiracial residents in Chester County is comparable to the share in Pennsylvania overall, where 3.6% of the population is Multiracial. Chester County ranks 24th statewide in terms of Multiracial residents as a share of the population, out of 67 counties.

Since the 2020 Census, Chester County's Multiracial population has grown by an estimated 19.7%. Multiracial residents' share of Chester County's population has increased from 3.5% to 4.1%.

Chester County is more Multiracial than neighboring Delaware County (3.8% Multiracial), Montgomery County (4% Multiracial), and Berks County (2.8% Multiracial). Chester County is less Multiracial than neighboring New Castle County (4.2% Multiracial), and Cecil County (5% 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.