Demographics of Chester County, Pennsylvania

Chester County, Pennsylvania had 557,116 people on July 1, 2025, by the Census Bureau’s estimate: +22,258 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Chester County, in four figures

557,116
Population: July 1, 2025, Vintage 2025 estimate.; +4.2%
Change since July 2020: +22,258 people.; 40.8 ±0.2
Median age: ACS 2020–⁠2024.; $127,208 ±$2,511
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Chester County, Pennsylvania's population grew 4.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Chester County, Pennsylvania's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Chester County, Pennsylvania's population grew 4.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Chester County, Pennsylvania's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	534,858	100.0	100.0
2021	541,131	101.2	100.2
2022	547,131	102.3	100.7
2023	551,316	103.1	101.6
2024	554,530	103.7	102.5
2025	557,116	104.2	103.1

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Population of Chester County, Pennsylvania on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	534,858	+429	+78	+34	+148
2021	541,131	+6,273	+848	+411	+4,753
2022	547,131	+6,000	+1,159	+1,622	+3,463
2023	551,316	+4,185	+1,244	+2,663	+402
2024	554,530	+3,214	+1,184	+2,480	−379
2025	557,116	+2,586	+1,173	+1,232	+158

Age, 2020–2024

The median age is 40.8 ±0.2: for men 40.0 ±0.3 and for women 41.6 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Chester County by age, ACS 2020–2024
Age	People	Share	Pennsylvania	United States
Under 5	29,143 ±32	5.3% ±<0.1	5.2% ±<0.1	5.6% ±<0.1
5 to 17	91,301 ±1,346	16.7% ±0.2	15.2% ±0.1	16.3% ±<0.1
18 to 24	50,513 ±1,150	9.2% ±0.2	9.0% ±<0.1	9.1% ±<0.1
25 to 44	134,220 ±1,359	24.5% ±0.2	25.5% ±0.1	26.9% ±<0.1
45 to 64	145,547 ±1,553	26.6% ±0.3	25.6% ±0.1	24.8% ±<0.1
65 and over	97,116 ±1,741	17.7% ±0.3	19.5% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $127,208 ±$2,511, and income per person $64,325 ±$924, in 2024 dollars. The median is $77,971 ±$342 in Pennsylvania and $80,734 ±$166 in the United States.

Households by income

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Households in Chester County by income, ACS 2020–2024
Household income	Households	Share	Pennsylvania	United States
Under $25,000	14,725 ±990	7.2% ±0.5	15.1% ±0.1	14.6% ±<0.1
$25,000 to $49,999	21,050 ±1,209	10.3% ±0.6	17.4% ±0.1	16.7% ±<0.1
$50,000 to $74,999	21,816 ±1,133	10.7% ±0.6	15.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	22,071 ±1,238	10.8% ±0.6	12.8% ±0.1	12.6% ±<0.1
$100,000 to $149,999	39,636 ±1,544	19.4% ±0.7	17.7% ±0.1	17.5% ±<0.1
$150,000 to $199,999	27,697 ±1,229	13.5% ±0.6	9.3% ±0.1	9.6% ±<0.1
$200,000 or more	57,779 ±1,257	28.2% ±0.6	11.8% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Chester County by age, ACS 2020–2024
Age	Below poverty	Rate	Pennsylvania	United States
All ages	31,893 ±2,496	6.0% ±0.5	11.7% ±0.1	12.5% ±0.1
Under 18	8,442 ±968	7.1% ±0.8	15.6% ±0.2	16.1% ±0.1
18 to 59	16,478 ±1,335	5.8% ±0.5	11.0% ±0.2	11.6% ±0.1
60 and over	6,973 ±648	5.3% ±0.5	10.1% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Chester County, ACS 2020–2024
Measure	Chester County	Pennsylvania	United States
Housing units	212,491 ±225	5,806,452 ±672	143,775,355 ±10,234
Occupied	96.4% ±0.4	90.8% ±0.2	89.9% ±0.1
Vacant	3.6% ±0.4	9.2% ±0.2	10.1% ±0.1
Owner occupied	75.1% ±0.6	69.3% ±0.3	65.2% ±0.3
Renter occupied	24.9% ±0.7	30.7% ±0.2	34.8% ±0.1
Median home value	$485,600 ±$4,003	$254,500 ±$767	$332,700 ±$236
Median gross rent	$1,763 ±$28	$1,209 ±$5	$1,413 ±$2
Median year built	1983 ±2	1965 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Chester County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Pennsylvania	United States
Hispanic or Latino	45,958 ±0	8.4% ±<0.1	8.7% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	413,154 ±984	75.4% ±0.2	73.0% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	26,727 ±1,175	4.9% ±0.2	10.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	36,881 ±759	6.7% ±0.1	3.8% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	71 to 211	< 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	45 to 229	< 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	2,144 ±619	0.4% ±0.1	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	22,698 ±1,687	4.1% ±0.3	3.6% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Chester County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Pennsylvania	United States
Born in the state	341,949 ±2,879	62.4% ±0.5	70.6% ±0.1	57.3% ±<0.1
Born in another state	142,501 ±2,879	26.0% ±0.5	19.8% ±0.1	26.9% ±<0.1
Born a citizen outside the states	8,243 ±917	1.5% ±0.2	1.9% ±<0.1	1.7% ±<0.1
Born abroad	55,147 ±1,949	10.1% ±0.4	7.7% ±0.1	14.1% ±<0.1
Naturalized citizens	28,004 ±1,431	5.1% ±0.3	4.3% ±0.1	7.4% ±<0.1
Not citizens	27,143 ±1,686	5.0% ±0.3	3.4% ±0.1	6.8% ±<0.1

Chester County among the counties of Pennsylvania

7th of 67 by population, July 2025. Every one is listed on the Pennsylvania page.

Counties of Pennsylvania near Chester County in population, July 2025
County	July 2025	Change since 2020
Allegheny County	1,225,035	−2.0%
Montgomery County	877,643	+2.4%
Bucks County	647,828	+0.3%
Delaware County	580,937	+0.8%
Lancaster County	563,159	+1.9%
Chester County	557,116	+4.2%
York County	473,197	+3.6%
Berks County	440,072	+2.7%
Lehigh County	384,383	+2.7%
Westmoreland County	349,324	−1.4%
Luzerne County	332,126	+2.1%

Elsewhere on the site

Rankings this appears in

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026