Chester County, Pennsylvania
Chester County is a county in Pennsylvania. Its county FIPS code is 42029. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 42029
- Representative coordinates
- 39.974029, -75.749751
- County type
- County
- County seat or government
- West Chester
- Resident population, July 2025
- 557,116
- Land area
- 1,943.922 km²
- Water area
- 22.396 km²
- State
- Pennsylvania
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Chester County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
17527 · 17555 · 19073 · 19087 · 19301 · 19310 · 19311 · 19312 · 19316 · 19317 · 19319 · 19320 · 19330 · 19333 · 19335 · 19341 · 19342 · 19343 · 19344 · 19345 · 19348 · 19350 · 19352 · 19355 · 19358 · 19362 · 19363 · 19365 · 19367 · 19369 · 19372 · 19373 · 19374 · 19375 · 19380 · 19382 · 19383 · 19390 · 19425 · 19442 · 19457 · 19460 · 19465 · 19475 · 19520 · 19543
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Atglen borough, PA
- Avondale borough, PA
- Berwyn CDP, PA
- Caln CDP, PA
- Cambridge CDP, PA
- Chadds Ford CDP, PA
- Chesterbrook CDP, PA
- Cheyney University CDP, PA
- Coatesville city, PA
- Cochranville CDP, PA
- Devon CDP, PA
- Dilworthtown CDP, PA
- Downingtown borough, PA
- Eagle CDP, PA
- Eagleview CDP, PA
- Elverson borough, PA
- Exton CDP, PA
- Frazer CDP, PA
- Glenmoore CDP, PA
- Hamorton CDP, PA
- Hayti CDP, PA
- Honey Brook borough, PA
- Kenilworth CDP, PA
- Kennett Square borough, PA
- Kimberton CDP, PA
- Lincoln University CDP, PA
- Lionville CDP, PA
- Malvern borough, PA
- Marshallton CDP, PA
- Modena borough, PA
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.