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Pennsylvania · Greater Philadelphia · Main Line · #127 Most Populous County in the US
Chester County, Pennsylvania
Pennsylvania's wealthiest county by median household income - from the Main Line's western communities and the horse country of Unionville to the historic borough of West Chester and the Brandywine Valley's world-class gardens and museums. Property tax, courts, public records, and senior services for Chester County residents.
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Chester County's assessment ratio means effective tax rates are low — but incorrect appraisals still cost money. Ownwell manages the appeal with no upfront cost.
Office: Chester County Department of Emergency Services – 601 Westtown Road, Suite 012, West Chester, PA 19380 | (610) 344-5000 | Hours: Mon–Fri 8:30 AM–4:30 PM
Services: Countywide disaster preparedness, response, and recovery
Related: West Chester Borough Emergency Management – (610) 436-1320, coordinates local readiness within the borough.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: US-202, US-30, and PA-100 serve West Chester, the county seat, in southeastern Pennsylvania’s Philadelphia metropolitan area
Transit: SEPTA provides regional rail service into parts of Chester County – confirm current routes directly.
Business & Permits
BUILDING & PERMITS
Office: No single countywide building department – permits are issued at the MUNICIPAL level
Services: West Chester Borough Building and Housing – 401 East Gay Street, West Chester, PA 19380, (610) 692-7574, uses an online permit management system; projects changing a building’s footprint or use may require zoning or stormwater review before a building permit is issued; sheds do not require a building permit but DO require zoning approval
Notes: Confirm the correct jurisdiction for your specific township or borough – Chester County has numerous separately incorporated municipalities.
Veterans Services
VETERANS SERVICES
County VSO: Chester County Veterans Affairs Office – West Chester, PA
Libraries
LIBRARIES
System: Chester County Library System (CCLS) – a federated system organized in 1965, with a District Center Library in Exton and 17 member libraries
Main Branch: Chester County Library – Exton, PA (adjacent to Exton Square Mall), relocated there in 1980
Related: West Chester Public Library – a separately operated library that has served West Chester continuously for over 150 years, Hours: Mon–Thu 10 AM–7 PM, Fri–Sat 10 AM–5 PM.
Services: In 1982, the Exton library received a National Association of Counties Award for its Library Literacy Program, the first such recognition in Pennsylvania, serving roughly 30,000 illiterate and 15,000 non-English-speaking residents at the time; the system’s original county building (1971) on West Market and New Street was dedicated to Congressman Paul Dague and stood on the site of the former Chester County Prison, demolished just years earlier.
Parks & Recreation
PARKS & RECREATION
Key Assets: Chester County was the site of extensive fighting during the Revolutionary War’s BATTLE OF BRANDYWINE campaign of September 1777, the largest single-day land battle of the entire war, involving nearly 30,000 combatants across roughly 35,000 acres of the surrounding countryside; British General William Howe’s forces, having landed near Elkton, Maryland, marched north and gathered at Kennett Square – squarely within Chester County – before launching a pincer maneuver against General Washington’s forces posted along Brandywine Creek on September 11, 1777, in an 11-hour engagement (the longest single day of fighting in the war); though the main battlefield park commemorating the fiercest fighting near Chadds Ford now sits in neighboring Delaware County, created from part of Chester County in 1789, substantial and directly related Revolutionary War history unfolded within present-day Chester County itself: British forces regrouped at Kennett Square before and after the battle, marched through what is now West Chester (then known as Turk’s Head) pursuing Washington’s retreating army, and clashed at nearby Goshen Township in the dramatic, rain-drenched non-engagement remembered as the “Battle of the Clouds” on September 16, 1777, where a sudden torrential storm forced both armies to withdraw before fighting could occur; days later, on September 19-20, 1777, General Anthony Wayne’s Pennsylvania regulars were caught in a devastating nighttime surprise attack at nearby Paoli, remembered as the Paoli Massacre; the British ultimately used these maneuvers to outflank Washington and capture Philadelphia, the seat of the fledgling American government, though the campaign’s strategic gains for Britain proved limited and Washington’s army survived to fight on; today, Sandy Hollow Park in West Chester, part of the official Brandywine Battlefield Trail, preserves ground associated with some of the campaign’s most intense fighting
Notes: Chester County’s genuine, extensively documented role in the Brandywine campaign – including the direct fighting at Kennett Square, the Battle of the Clouds, and the Paoli Massacre – reflects deep Revolutionary War heritage, even though the flagship Brandywine Battlefield Park itself now sits just across the county line in Delaware County.
GIS & Maps
GIS & MAPS
GIS Portal: Chester County GIS – accessible via chesco.org
Parcel Search: Chester County Assessment Office
Addressing/911: Coordinated through Chester County Department of Emergency Services
Animal Services
ANIMAL SERVICES
Facility: Brandywine Valley SPCA – 1212 Phoenixville Pike, West Chester, PA 19380 | (484) 302-0865 | Hours: Tue–Fri 12–7 PM, Sat 10 AM–5 PM, Sun 10 AM–5 PM (closed Mon)
Services: An open-admissions shelter offering dog, cat, and small animal adoptions, low-cost spay/neuter and vaccine clinics, emergency shelter, humane law enforcement, walk-in vaccine and microchip clinics, and a pet food pantry for families in need; operates multiple campuses across southeastern Pennsylvania
Related: Chester County SPCA – 1212 Phoenixville Pike (shared address in some listings), West Chester, PA – confirm current status/relationship to Brandywine Valley SPCA directly, as naming has shifted in recent years.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Environmental Complaints: PA Department of Environmental Protection (DEP) – dep.pa.gov
Notes: Contact your specific municipality directly for current refuse collection and recycling program details.
NOTES
Chester County was the site of extensive fighting connected to the 1777 Battle of Brandywine, the largest single-day land battle of the Revolutionary War, including the Battle of the Clouds and the Paoli Massacre. All contact information above was sourced from official county, city, library, and shelter pages as of this writing; phone numbers and hours should be reconfirmed directly with the relevant office before a visit.
About Chester County
Chester County is Pennsylvania’s wealthiest county by median household income and the 127th most populous in the United States, covering 756 square miles of the Philadelphia region’s western suburbs and exurbs – from the Main Line’s Paoli and Malvern communities east of the county seat to the rolling horse country and equestrian estates west of Coatesville.
West Chester (the county seat, population ~20,000) is one of Pennsylvania’s most architecturally distinguished county seat boroughs – a dense downtown of 19th-century commercial buildings, excellent restaurants, and an active arts scene centered on the West Chester University of Pennsylvania campus. The borough’s High Street and surrounding blocks function as a regional destination far beyond their municipal population.
The Main Line – the historic commuter rail corridor along the former Pennsylvania Railroad tracks – extends into Chester County’s eastern communities: Malvern, Paoli, Wayne (in Delaware County), and Berwyn are the westernmost Main Line communities, characterized by large Victorian and Colonial Revival homes, excellent school districts, and SEPTA Paoli/Thorndale Line service to Center City Philadelphia.
Exton and the Route 30 Bypass corridor have developed into Chester County’s primary commercial and employment hub – corporate campuses, retail, and logistics operations along the Route 30 and Turnpike interchange have made Exton the county’s economic engine.
Phoenixville (population ~17,000) on the Schuylkill River has undergone dramatic revitalization since the early 2000s – a former steel mill town transformed into one of the Philadelphia region’s most vibrant downtowns, with a craft brewery scene, renovated theaters, and new residential development that has made it one of the region’s most sought-after communities.
Downingtown (population ~8,000) anchors the county’s central corridor along the Brandywine Creek.
The Brandywine Valley – the broad watershed of the Brandywine Creek spanning Chester County and northern Delaware – is home to some of the most extraordinary cultural institutions in the Mid-Atlantic: Longwood Gardens (a 1,100-acre garden estate created by Pierre du Pont, one of the world’s great horticultural displays), Winterthur Museum (just across the state line in Delaware), and the Brandywine River Museum of Art in Chadds Ford (home of the Wyeth family collection).
Chester County’s horse country – the communities of Unionville, Landenberg, and West Marlborough in the county’s southern tier – features some of the most valuable agricultural and equestrian land in Pennsylvania, home to fox hunts, steeplechase races, and thoroughbred breeding operations.
All Services
Browse every category and topic available for this county.
Chester County uses a base year assessment system with assessed values tied to a historical base year. The Common Level Ratio (CLR) – published annually by STEB – determines the relationship between assessed and true market values for appeal purposes. When CLR falls significantly below 1.0, assessed values systematically understate current market values, creating appeal opportunity for both directions.
The appeal process: File with the Chester County Board of Assessment Appeals at 313 West Market Street, West Chester, PA 19380, phone 610-344-6105. The appeal deadline is August 1 for the following tax year. School districts may file reverse appeals on properties they believe are under-assessed.
Homestead exemption: Pennsylvania’s Act 50 homestead exemption reduces assessed value for school district taxation for primary residences.
PA inheritance tax: Pennsylvania imposes an inheritance tax – 0% to surviving spouses, 4.5% to direct descendants, 12% to siblings, 15% to all others. Chester County’s high property values and significant estate assets make inheritance tax planning particularly relevant.
OWNWELL CTA: Chester County Board of Assessment Appeals: August 1 deadline. Brandywine Valley, Malvern, and Exton appreciation strong and consistent. PA inheritance tax 4.5% to descendants, 12% to siblings. Ownwell manages the appeal with no upfront cost.
Recommended
Chester County Board of Assessment Appeals: August 1 deadline. Brandywine Valley, Malvern, and Exton appreciation strong and consistent. PA inheritance tax 4.5% to descendants, 12% to siblings. Ownwell manages the appeal with no upfront cost.
Courts & Legal
Courts & Legal
Orphans’ Court (Probate): The Chester County Orphans’ Court and Register of Wills at 201 W. Market Street, Suite 4100, West Chester, PA 19380, phone 610-344-6335, handles wills, estate administration, and guardianships.
Court of Common Pleas: The Chester County Court of Common Pleas handles civil, criminal, and family matters.
Recorder of Deeds: The Chester County Recorder of Deeds at 313 W. Market Street, West Chester, phone 610-344-6330, maintains all real property records. Land records searchable online.
Senior Services
The Chester County Department of Aging Services at 601 Westtown Road, Suite 370, West Chester, PA 19380, phone 610-344-5300, serves the county’s senior population with in-home services, caregiver support, nutrition programs, transportation, and benefits counseling. Chester County operates senior centers across its municipalities.
Recommended
Assisted living, memory care, and independent living across Chester County - from West Chester and Malvern to Phoenixville, Downingtown, and the Brandywine Valley communities.
Genealogy
County-level record sources
Chester County Register of Wills, West Chester (probate/estate case files – see Probate section above).
Chester County Archives and Records, 601 Westtown Road, West Chester – holds broader historical county records.
Local societies
No dedicated Chester County genealogical society was confirmed in available directories.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Register of Wills, Chester County 201 West Market Street, Suite 2200, West Chester, PA 19380 (610) 344-6335
Chester County is one of Pennsylvania’s original three counties (founded 1682), in southeastern Pennsylvania, seated in West Chester.
Step 1: figure out which path applies
Pennsylvania has NOT adopted the Uniform Probate Code. Probate runs through its own statute, the Probate, Estates and Fiduciaries (PEF) Code, Title 20 of the Pennsylvania Consolidated Statutes. Probate begins at the Register of Wills – an elected county official – in the county where the decedent lived. Routine, uncontested probate happens entirely at the Register of Wills; only disputes escalate to the Orphans’ Court Division of the Court of Common Pleas.
Small Estate Petition (20 Pa.C.S. § 3102) – available when the estate’s personal property (excluding real estate) totals $50,000 or less. This lets an interested party petition the Orphans’ Court directly for approval of a proposed distribution, skipping the need to formally open a full probate estate. Real property is never covered by this simplified process.
Formal Probate – required for estates exceeding $50,000 in personal property, or for any estate involving real property that needs to pass through probate. The Register of Wills validates the will (if any) and issues Letters Testamentary or Letters of Administration.
Step 2: filing for administration
The personal representative files with the Register of Wills in Chester County, along with the original will if one exists.
The Register of Wills reviews and, if in order, issues Letters Testamentary or Letters of Administration.
The personal representative gathers assets, notifies heirs and known creditors, and begins settling the estate.
Pennsylvania has a one-year creditor period running from the date of death, not from any published notice.
A Pennsylvania Inheritance Tax Return (REV-1500) must be filed with the Register of Wills, regardless of estate size.
Once debts, taxes, and expenses are settled, remaining assets are distributed according to the will or Pennsylvania’s intestacy laws, and the estate is closed.
What it costs
Filing fees vary; check with Chester County directly for current fees.
Pennsylvania has NO separate state estate tax, but its INHERITANCE TAX applies to virtually every estate: 0% to a surviving spouse (and to a parent inheriting from a child 21 or younger), 4.5% to children and other lineal descendants, 12% to siblings, and 15% to everyone else. No dollar exemption.
A 5% early-payment discount applies if paid within 3 months of death; the return and payment are otherwise due within 9 months.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
REGISTER OF WILLS
2 North High St, West Chester, PA 19380
(610) 344-6365
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
201 West Market St, West Chester, PA 19380
(610) 344-6875
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Health Department
601 Westtown Rd, West Chester, PA 19380
(610) 344-6225
Assistance Office (DHS)
22 East Evans St, West Chester, PA 19380
(610) 466-1000
Public Health Information
PUBLIC HEALTH
Office: Chester County Health Department – West Chester, PA
Services: Immunizations, WIC, environmental health, vital records; one of the relatively few Pennsylvania counties with its own independent county health department
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