Delaware County occupies 184 square miles immediately southwest of Philadelphia and is one of the most densely populated counties in Pennsylvania with approximately 576,000 residents (U.S. Census Bureau, 2023 ACS). The county shares its entire eastern border with Philadelphia — a boundary that residents cross routinely for employment, family connections, and housing. Upper Darby Township borders West Philadelphia along its eastern edge and is the county's most populous municipality at approximately 82,000 residents. The Philadelphia border makes cross-county record patterns the norm rather than the exception: running UJS statewide rather than filtering to Delaware County captures both jurisdictions in one query.
Delaware County has 49 separate incorporated municipalities each with their own police department — the highest police department count per square mile of any Pennsylvania county. This fragmentation makes arrest record access difficult, but it does not affect UJS court record access, which covers all Delaware County Court of Common Pleas and Magisterial District Court matters through the statewide portal. For the broader Pennsylvania context, see our Pennsylvania state guide.
Key takeaways
- Delaware County has approximately 576,000 residents (U.S. Census Bureau, 2023 ACS) in 184 square miles — one of Pennsylvania's most densely populated counties, sharing its entire eastern border with Philadelphia.
- UJS at ujsportal.pacourts.us covers all 67 PA counties statewide in one free name search — always run statewide first to capture both Delaware County and prior Philadelphia records simultaneously.
- Delaware County has 49 separate municipal police departments. Arrest record access is fragmented; court record access through UJS is the practical unified research tool.
- Chester city has historically been Pennsylvania's highest-crime city per capita — UJS searches for Chester addresses will return dense criminal court results. Upper Darby also generates high filing volume from its density and Philadelphia border location.
Delaware County quick facts
- Population estimate (2023): approximately 576,000 (U.S. Census Bureau, 2023 ACS)
- County seat: Media
- Largest municipality: Upper Darby Township (est. pop. 82,000)
- State: Pennsylvania
- Primary court: Delaware County Court of Common Pleas
Population estimates from the U.S. Census Bureau.
How to search Delaware County records
Run UJS statewide — the Philadelphia border means prior Philadelphia records are expected
Delaware County's entire eastern border with Philadelphia means that running a Delaware County-filtered UJS search rather than a statewide search regularly misses Philadelphia records from prior or concurrent city residence. Pennsylvania's UJS portal at ujsportal.pacourts.us covers all 67 counties in a single free name search — a statewide query surfaces Delaware County Court of Common Pleas and MDJ records alongside any Philadelphia, Montgomery, or Chester County records in one result set. For Upper Darby subjects in particular, whose township directly borders West Philadelphia along Baltimore Pike and West Chester Pike, prior Philadelphia records are common enough to treat as the baseline expectation rather than an occasional supplement. Start statewide every time. Our court record search guide covers Pennsylvania's two-tier court structure and UJS access in detail.
Calibrate expectations to the specific municipality
Delaware County's internal contrast between its communities makes municipality identification the most important preliminary step before any portal interpretation. Chester city, in the southeastern corner on the Delaware River, has one of the highest violent crime rates of any Pennsylvania city — UJS searches for Chester addresses return dense criminal court results and a clean result should be verified rather than assumed. Upper Darby generates high filing volume from its density and Philadelphia border location with diverse demographics including significant South and Southeast Asian, West African, and Caribbean immigrant communities. Haverford Township, Radnor Township (Wayne and Villanova), and the county's western and northern communities have much lower filing rates consistent with affluent suburban Philadelphia demographics. Knowing which municipality applies before interpreting UJS results prevents both overcounting (assuming every hit is current) and undercounting (assuming thin results mean no history). Our find someone by name and city guide covers how to use municipality context to calibrate UJS results.
Confirm the Springfield Township county before routing document requests
Delaware County has a Springfield Township — one of its stable mid-county suburban municipalities. Montgomery County also has a Springfield Township. Both are in Pennsylvania and both use "Springfield, PA" as a mailing address in some contexts. For any subject with a Springfield, PA address, confirming the specific county before routing a document request to either the Delaware County Prothonotary in Media or the Montgomery County Prothonotary in Norristown prevents a misdirected request. The Pennsylvania county confirmation can be done through the aggregator address data or the Pennsylvania county boundary lookup. Our find someone by first and last name guide covers how to build county-confirming identity context before any clerk contact.
Official record sources in Delaware County
| Record type | Agency | Online access | Notes |
|---|---|---|---|
| All court records statewide (felony, civil, family, MDJ, traffic) | Pennsylvania Unified Judicial System (UJS) | ujsportal.pacourts.us | Free statewide name search covering all 67 PA counties including Delaware County. Always run statewide — catches prior Philadelphia records in the same query. |
| Property records, deeds, mortgages, liens | Delaware County Recorder of Deeds | delcopa.gov/recorder | Free online access to recorded property documents. Most reliable current-address verification for homeowners. Certified copies require fee. |
| Marriage license records | Delaware County Register of Wills | delcopa.gov/registerofwills | Marriage licenses in Pennsylvania are at the Register of Wills — not the Recorder of Deeds. Separate county office. PA DOH holds certified copies of marriages 50+ years old. |
| Statewide criminal history | Pennsylvania PATCH | patch.pccd.pa.gov | Fee-based statewide criminal history name check covering all PA counties. Supplement to UJS for comprehensive criminal context including prior Philadelphia history. |
| Vital records (certified copies) | Pennsylvania DOH Division of Vital Records | health.pa.gov/vital-records | PA DOH holds certified copies of PA marriages 50+ years old. More recent marriages at issuing county Register of Wills. |
| Arrest records (fragmented) | 49 separate municipal police departments / Delaware County Sheriff | Various — no unified portal | Delaware County has 49 separate police departments. No unified arrest record portal. Each municipality maintains its own records. Sheriff covers county jail and unincorporated areas. Court portal (UJS) is the practical unified research tool for post-arrest records. |
For a broader overview of how Pennsylvania's public records systems work, see our public record search guide.
Marriage records in Delaware County
Marriage licenses in Pennsylvania are issued by the county Register of Wills in the county where the license is obtained. The Delaware County Register of Wills issues and holds marriage licenses, with records accessible at delcopa.gov/registerofwills. Pennsylvania Department of Health maintains a statewide vital records index — marriages 50 years and older can be requested from PA DOH at health.pa.gov/vital-records. Certified copies require a fee and proper qualification.
The Register of Wills is a separate county office from the Recorder of Deeds. Marriage record requests sent to the wrong office produce nothing. For subjects who were married in Philadelphia before relocating to Delaware County, those marriage records are in Philadelphia's Register of Wills — a separate system. For a full guide to how marriage record searches work across all states, see our marriage record search guide.
Divorce records in Delaware County
Divorce cases in Pennsylvania are filed in the Court of Common Pleas in the county of residence. Delaware County Court of Common Pleas handles dissolution of marriage filings for Delaware County residents, with case docket information accessible through the UJS statewide portal at ujsportal.pacourts.us at no cost. Pennsylvania requires six months of state residency before filing for divorce. Full case documents require contact with the Delaware County Prothonotary in Media.
For subjects who divorced in Philadelphia before relocating to Delaware County, those records are in Philadelphia's Court of Common Pleas — visible in the UJS statewide search alongside Delaware County records. For a full guide to how divorce record searches work across all states, see our divorce record search guide.
Industry insight
Delaware County is one of those counties where I always run UJS statewide rather than filtering to the county. The Philadelphia border is the most porous county line in southeastern Pennsylvania — people move between Delco and the city constantly, and a county-only filter misses records that are sitting right there in the same statewide system. For Upper Darby specifically, I treat prior Philadelphia records as the expected pattern rather than the exception and look for them proactively in the UJS statewide result rather than being surprised when they appear.
The 49 police department situation is also worth noting practically. If I need arrest records rather than court records for a Delaware County subject, there is no unified portal to check. I have to identify the specific municipality, find the appropriate police department contact, and request records separately. Court records through UJS are the practical unified tool here. For most research purposes — confirming a criminal history, identifying case outcomes, understanding the subject's legal history — UJS provides what is needed without requiring 49 individual department contacts.
Common mistakes when searching in Delaware County
- Running a Delaware County-filtered UJS search rather than statewide. Philadelphia is directly adjacent to Delaware County's entire eastern border. Prior Philadelphia records are common for Delaware County subjects and are visible in the same UJS statewide query. Filtering to Delaware County alone misses them.
- Confusing Delaware County's Springfield Township with Montgomery County's Springfield Township. Both are in Pennsylvania, both use "Springfield, PA" as a mailing address in some contexts, and document requests routed to the wrong county courthouse produce nothing. Confirm the county before any clerk contact for Springfield addresses.
- Looking for marriage records at the Recorder of Deeds. Pennsylvania marriage licenses are at the Register of Wills — a separate county office. The Recorder of Deeds handles property documents only. The wrong office contact produces nothing for marriage record requests.
- Expecting unified arrest record access for Delaware County. The county's 49 separate police departments each maintain their own arrest records with no unified portal. For post-arrest court records, UJS is the unified tool. For pre-charge arrest records, the specific municipal police department must be identified and contacted separately.
Delaware County court system overview
Delaware County Court of Common Pleas handles felonies, major civil cases, domestic relations, and probate, with the courthouse in Media. Fourteen Magisterial District Courts organized by municipality handle misdemeanors, summary offenses, traffic violations, and minor civil matters. Both tiers are accessible through the UJS statewide portal. Pennsylvania PATCH provides fee-based statewide criminal history name checks. For a broader explanation of Pennsylvania's court structure, see our court record search guide.
Crime statistics and public-safety context
Delaware County's crime profile is highly bifurcated. Chester city has historically reported the highest violent crime rate of any Pennsylvania city per capita — its concentrated poverty, legacy industrial decline, and limited municipal resources drive rates that dwarf the rest of the county. Upper Darby generates high overall filing volume from its density but at more moderate per-capita rates. Haverford Township, Radnor, Newtown Township, and western Delaware County communities report very low rates consistent with affluent Philadelphia suburbs. Pennsylvania State Police UCR data for 2023 showed Delaware County's aggregate crime rate near the statewide average, with Chester and Upper Darby driving most of the volume while suburban communities contribute minimally. Source: Pennsylvania State Police, Uniform Crime Reporting 2023.
Major communities in Delaware County
Upper Darby Township
Upper Darby Township (est. pop. 82,000 — U.S. Census Bureau, 2023 ACS) is the county's largest municipality, bordering West Philadelphia along its entire eastern edge. The township has experienced significant demographic transformation from its mid-20th century character to a diverse community including substantial South and Southeast Asian, West African, Haitian, and Caribbean immigrant populations. Upper Darby generates the county's highest court filing volume. Name searches here benefit from phonetic variant checking for surnames from non-Latin-script languages.
Chester
Chester (est. pop. 34,000 — U.S. Census Bureau, 2023 ACS) is in the county's southeastern corner on the Delaware River. It is Pennsylvania's oldest city and has historically generated the highest violent crime rates per capita of any Pennsylvania municipality. Chester's court filing volume for serious criminal matters is disproportionate to its current population. UJS searches for Chester addresses should be expected to return dense criminal results.
Haverford Township
Haverford Township (est. pop. 50,000 — U.S. Census Bureau, 2023 ACS) is an affluent inner-ring Philadelphia suburb immediately west of the Montgomery County Main Line communities. Haverford College's presence in the adjacent Havertown area creates a small student-era address component in campus-adjacent ZIP codes. Court filing rates are low and address histories are stable for most non-student Haverford Township residents.
Radnor Township (Wayne)
Radnor Township contains the communities of Wayne and Villanova. Wayne is one of the more affluent Philadelphia suburban communities; Villanova University's enrollment of approximately 11,000 students creates address churn in campus-adjacent ZIP codes similar to the UM pattern in Washtenaw County. The Radnor corridor's corporate office presence also creates professional transient address volatility.
Media
Media Borough (est. pop. 6,000) is the county seat and the location of the Delaware County Courthouse, Prothonotary, Clerk of Courts, and Register of Wills. All Delaware County court document requests route to Media regardless of where in the county the subject lives. Media's small size belies its administrative importance as the hub of all Delaware County government functions.
Common search scenarios
Searching for an Upper Darby subject
Run UJS statewide — prior Philadelphia West Philadelphia records are the expected baseline for Upper Darby subjects with any city address history. Add date of birth for common surnames given the high filing volume. Check the aggregator for name variants for subjects with South Asian, West African, or Caribbean naming conventions. Property records at the Recorder of Deeds for address verification. See our guide on finding someone by name and city.
Checking Delaware County court records
PA UJS statewide at ujsportal.pacourts.us. Delaware County Prothonotary at delcopa.gov for civil document access. Clerk of Courts for criminal document access. Delaware County Register of Wills for marriage license records. Pennsylvania PATCH for comprehensive statewide criminal context. See our court record search guide.
Searching for a Springfield, PA subject
Confirm whether the address is in Delaware County's Springfield Township or Montgomery County's Springfield Township before any clerk contact. Use the aggregator's address data or a Pennsylvania county boundary lookup. Delaware County routes to the Media courthouse; Montgomery County routes to the Norristown courthouse. The UJS statewide search covers both counties simultaneously and identifies which county holds the case in the docket results.
Start Here: Enter Any Name To View Records
Best sites to review first
Before running UJS for Delaware County, these are the two services I recommend reviewing first — establishing the municipality and identifying prior Philadelphia addresses are the most important preliminary steps.
| Service | Why people use it | Best fit |
|---|---|---|
| Instant Checkmate | Aggregates address history across Delaware County and Philadelphia — confirms the specific Delco municipality and surfaces prior Philadelphia address periods before UJS interpretation | Municipality identification and Philadelphia border prior-record identification |
| TruthFinder | Address timeline and relative associations across the Philadelphia southwestern suburban corridor — Delaware, Chester, and Montgomery counties alongside Philadelphia | Multi-county southeastern Pennsylvania address chain for mobile Delco subjects |
Important: These services are not FCRA-compliant consumer reporting agencies. Do not use them for employment screening, tenant decisions, insurance underwriting, or any other purpose regulated by the Fair Credit Reporting Act.
Frequently asked questions
Why should I check both Delaware County and Philadelphia records?
Delaware County shares its entire eastern border with Philadelphia. Upper Darby directly borders West Philadelphia, and residents routinely move between the two jurisdictions. Prior Philadelphia court records stay in Philadelphia's system — they will not appear in a Delaware County-only search. Pennsylvania's UJS statewide portal covers both counties in a single free name search. Running statewide rather than county-filtered is the standard approach for any Delaware County subject with a possible Philadelphia address history.
How do I access Delaware County court records online?
Pennsylvania's UJS portal at ujsportal.pacourts.us provides free statewide name searches covering Delaware County Court of Common Pleas and all MDJ courts alongside all 67 Pennsylvania counties. Full civil case documents require contacting the Delaware County Prothonotary in Media. Criminal case documents require the Clerk of Courts in Media. Pennsylvania PATCH at patch.pccd.pa.gov provides fee-based statewide criminal history checks.
Where do I find marriage records for Delaware County?
Marriage licenses in Pennsylvania are at the Register of Wills — in Delaware County, the Delaware County Register of Wills at delcopa.gov/registerofwills. Marriage records are not at the Recorder of Deeds, which handles property documents only. PA DOH at health.pa.gov/vital-records holds certified copies of marriages 50 years and older.
How do I tell if a Springfield, PA address is in Delaware or Montgomery County?
Both Delaware County and Montgomery County have a Springfield Township, and both use "Springfield, PA" as a mailing address. The most reliable confirmation method is checking the aggregator's address data, which typically includes the county. Alternatively, a Pennsylvania county boundary lookup or the UJS statewide search identifies which county's cases appear for that address. For document requests, Delaware County routes to Media and Montgomery County routes to Norristown.
Why does Delaware County have 49 police departments?
Delaware County's 49 incorporated municipalities each maintain their own police department — a legacy of Pennsylvania's strong township and borough home-rule tradition. This fragmentation means there is no unified arrest record portal for the county. For post-arrest court records, UJS covers all Delaware County cases through the statewide portal. For pre-charge arrest records requiring direct police contact, the specific municipality must be identified and that department contacted separately.
How do I find property records for Delaware County?
The Delaware County Recorder of Deeds at delcopa.gov/recorder provides free online searches by owner name or address for deeds, mortgages, and liens. Property records are the most reliable current-address verification for Delaware County homeowners. The Delaware County Board of Assessment provides property valuation and ownership data for assessment purposes.
Can I use these searches for jobs, housing, or insurance decisions?
No. The services discussed on this page are not consumer reporting agencies and the information here is not a consumer report. They should not be used for employment, tenant screening, insurance underwriting, credit, or any other purpose regulated by the Fair Credit Reporting Act.
Other Pennsylvania county guides
- Philadelphia County
- Allegheny County (Pittsburgh)
- Montgomery County
- Bucks County
- Chester County
- Lancaster County
- York County
Browse all county guides: People Search by County
