Data API

State Boundaries for NJ, PA, DE, and MD

Boundaries
Data Steward
DVRPC GIS
Update Frequency
as needed
Metadata Last Modified
August 28, 2025
Dataset Type
Geospatial
Source
Delaware Valley Regional Planning Commission (DVRPC)
Organization Type
Planning Commission
Use Limitations
Unrestricted: can be shared internally and externally without data sharing agreement
License
No License Provided

State boundaries for Pennsylvania, New Jersey, Delaware, Maryland, New York, Connecticut, and Washington DC. This dataset was compiled from multiple sources. Original Sources: PA - PennDOT NJ - NJOIT DE - DE Geological Survey MD, NY, CT, DC - ESRI Linework has been adjusted using the following methodology. NJ's boundaries overrode PA, since NJ's were highly accurate. PA overrode MD since PennDOT's were more accurate than ESRI's, and DE overrode PA & MD, since the "arc" of northernmost DE was a bit more accurate than PennDOT's or our original county boundaries. Boundaries in the DVRPC region have been adjusted to align with parcel data (where appropriate). This file is the result of a dissolve performed on the county boundary file.

View map in GIS Catalog
objectid
state
state_name
state_fips

Data Dictionary

Column Type Label Description
objectid OID OBJECTID Internal feature number.
shape Geometry Shape Feature geometry.
state_name String STATE_NAME State Name
state_fips String STATE_FIPS 2 digit state FIPS number
state String State State abbreviation
st_area(shape) Double st_area(shape)
st_perimeter(shape) Double st_perimeter(shape)