Chester County Population

1790–2026

559.7K

2026 projection

4.6% since 2020 (increase)

0100K200K300K400K500K600K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Chester County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026559,702+2,5860.46%
2025557,116+2,5860.47%
2024554,530+3,2140.58%
2023551,316+4,1850.76%
2022547,131+6,0001.11%
2021541,131+6,2731.17%
2020534,858+9,7991.87%
2019525,059+2,8030.54%
2018522,256+3,1990.62%
2017519,057+2,2890.44%

Showing 10 of 38 years.

Chester County Demographics

40.8median age

Median age

Female41.6 yrs
Male40 yrs

Adults

427,396
97,116 seniors (65+) · 23% of adults330,280 other adults

Sex

Female 50.4% · 276,148Male 49.6% · 271,692

Population by age

MaleFemale85+ years, male: 4,06785+ years, female: 6,50580–84 years, male: 4,54980–84 years, female: 6,96075–79 years, male: 8,25675–79 years, female: 9,43170–74 years, male: 11,81070–74 years, female: 13,50665–69 years, male: 15,73865–69 years, female: 16,29460–64 years, male: 18,10760–64 years, female: 18,74055–59 years, male: 19,13855–59 years, female: 19,10050–54 years, male: 18,42350–54 years, female: 18,16245–49 years, male: 17,08345–49 years, female: 16,79440–44 years, male: 18,52240–44 years, female: 17,75135–39 years, male: 17,68535–39 years, female: 17,51130–34 years, male: 16,48730–34 years, female: 16,21525–29 years, male: 15,52925–29 years, female: 14,52020–24 years, male: 16,81320–24 years, female: 17,11115–19 years, male: 19,73715–19 years, female: 19,68410–14 years, male: 18,66010–14 years, female: 17,9485–9 years, male: 16,2615–9 years, female: 15,6000–4 years, male: 14,8270–4 years, female: 14,31685+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K15K15K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 5,478 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Chester County Income

$127,208median household income

Median household income

$127,208

Half of households earn more, half earn less

Median earnings

$76,477

Typical yearly pay for a worker 25 or older.

Poverty rate

6%

About 1 in 17 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Chester County Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%58%54%
Never married31%32%29%
Divorced8%7%9%
Widowed5%2%7%
Separated1%1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year