Delaware County Office of Data and Mapping Innovation (ODMI), using a Geographic Information System, supports departments within the County with custom mapping, interactive applications, and authoritative data to be used in their workflows and engagement with the public. The office always supports and works with local governments, private companies, and the public. The open data site provides information in the form of interactive applications as well as a data inventory to download specific datasets for mapping purposes.

For more information or questions contact - Email: data_mapping@co.delaware.pa.us

Geospatial data about Delaware County, Pennsylvania Municipalities. Export to CAD, GIS, PDF, CSV and access via API.

Geospatial data about Delaware County, Pennsylvania Boundary. Export to CAD, GIS, PDF, CSV and access via API.

Geospatial data about Delaware County, Pennsylvania Parcels 2018. Export to CAD, GIS, PDF, CSV and access via API.

The Digital Surficial Geologic-GIS Map of Upper Delaware Scenic and Recreational River, New York and Pennsylvania is composed of GIS data layers and GIS tables, and is available in the following GRI-supported GIS data formats: 1.) a 10.1 file geodatabase (upde_surficial_geology.gdb), a 2.) Open Geospatial Consortium (OGC) geopackage, and 3.) 2.2 KMZ/KML file for use in Google Earth, however, this format version of the map is limited in data layers presented and in access to GRI ancillary table information. The file geodatabase format is supported with a 1.) ArcGIS Pro map file (.mapx) file (upde_surficial_geology.mapx) and individual Pro layer (.lyrx) files (for each GIS data layer), as well as with a 2.) 10.1 ArcMap (.mxd) map document (upde_surficial_geology.mxd) and individual 10.1 layer (.lyr) files (for each GIS data layer). The OGC geopackage is supported with a QGIS project (.qgz) file. Upon request, the GIS data is also available in ESRI 10.1 shapefile format. Contact Stephanie O'Meara (see contact information below) to acquire the GIS data in these GIS data formats. In addition to the GIS data and supporting GIS files, three additional files comprise a GRI digital geologic-GIS dataset or map: 1.) A GIS readme file (upde_geology_gis_readme.pdf), 2.) the GRI ancillary map information document (.pdf) file (upde_surficial_geology.pdf) which contains geologic unit descriptions, as well as other ancillary map information and graphics from the source map(s) used by the GRI in the production of the GRI digital geologic-GIS data for the park, and 3.) a user-friendly FAQ PDF version of the metadata (upde_surficial_geology_metadata_faq.pdf). Please read the upde_geology_gis_readme.pdf for information pertaining to the proper extraction of the GIS data and other map files. Google Earth software is available for free at: https://www.google.com/earth/versions/. QGIS software is available for free at: https://www.qgis.org/en/site/. Users are encouraged to only use the Google Earth data for basic visualization, and to use the GIS data for any type of data analysis or investigation. The data were completed as a component of the Geologic Resources Inventory (GRI) program, a National Park Service (NPS) Inventory and Monitoring (I&M) Division funded program that is administered by the NPS Geologic Resources Division (GRD). For a complete listing of GRI products visit the GRI publications webpage: For a complete listing of GRI products visit the GRI publications webpage: https://www.nps.gov/subjects/geology/geologic-resources-inventory-products.htm. For more information about the Geologic Resources Inventory Program visit the GRI webpage: https://www.nps.gov/subjects/geology/gri,htm. At the bottom of that webpage is a "Contact Us" link if you need additional information. You may also directly contact the program coordinator, Jason Kenworthy (jason_kenworthy@nps.gov). Source geologic maps and data used to complete this GRI digital dataset were provided by the following: Pennsylvania Geological Survey, New York State Geological Survey and U.S. Geological Survey. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (upde_surficial_geology_metadata.txt or upde_surficial_geology_metadata_faq.pdf). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale of 1:50,000 and United States National Map Accuracy Standards features are within (horizontally) 25.4 meters or 83.3 feet of their actual location as presented by this dataset. Users of this data should thus not assume the location of features is exactly where they are portrayed in Google Earth, ArcGIS, QGIS or other software used to display this dataset. All GIS and ancillary tables were produced as per the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3. (available at: https://www.nps.gov/articles/gri-geodatabase-model.htm).

Description

The PARCELS layer depicts mapped land parcels or real estate properties within Chester County. This data contains geometric representations capturing the general size, shape and location for all of the real estate properties, which can be mapped, on the County's land surface.

ContactsTim Cassel, County of Chester

Tcassel@chesco.org, 610-344-5441, 313 W. Market St Suite 5302 West Chester, PA 19380ResourceUpdate frequency of dataset: Weekly Last Update Date: August 2023Accuracy of attribute: Attributes are correct as per County of Chester Assessment DepartmentPositional accuracy of dataset:The PARCELS layer (and derived copies PARCEL_PUBLISH and PRCL_POLY) was originally created through a conversion process of digitizing hand drawn tax maps into digital form and orientating the tax map sheets and parcels to the features depicted in the 1993 orthophotos. These parcel polygon features were adjusted based on aerial photography dated April 7, 1993, and road centerlines, right-of-way lines and other physical features generated from the same photography. While the imagery has a pixel resolution of 1.5 square feet, a positional accuracy of +/- 5 feet and is designed for use at a scale of 1 inch = 200 feet, the resulting PARCELS horizontal accuracy varies from reasonably accurate in the best cases to less accurate in the worst cases. Subsequent and current map update processes include metes and bounds entry from subdivision and deed information, as well as property corner locations based on GPS points and the utilization of our newest imagery datasets. While the update processes include more accurate methods, the resultant overall accuracy is still dependent on the surrounding parcel fabric's varied accuracy. Planimetric coordinates are based on the Pennsylvania State Plane Coordinate System South Zone and North American Datum 1983 Spatial ReferenceType: ProjectedGeographic Coordinate Reference: GCS North America 1983Projected Coordinate System: NAD 1983 State Plane Pennsylvania SouthLinear Unit: US Survey Feet

Note: There is a difference between land use code and zoning. Land management occurs via a land use designation which determines the land use code. This designation specifies how land and resources within it is managed. Zoning designations define how a property can be developed and used and it is controlled by each township/borough. See below for list of codes.Field DescriptionUPI - Uniform Parcel Identification Number, a unique value given to each parcelPIN_MAP - A Tie-back parcel identification number used to link UPI values to the parcel on which they residePIN_COMMON - A variation of UPI which adds and E for Exempt, U for Utility or T for TrailerPIN_ASMNT - A long form of the UPI number used for assessment purposesCODE (see below for list of codes)MULTI_POLY - Number listing for each parcel of a Multi-Poly parcel. (Example 1 of 20, 2 of 20)POLY_PER_PARCEL - Number of polygons that make up a parcel (0 indicates it is just one polygon)SQFT_PLAN_TOT - The square footage of a parcel (taken from the recorded plan or deed)ACRE_PLAN_TOT - The acreage of a parcel (taken from the recorded plan or deed)ACRE_PLAN_POLY - The acreage of the polygon depicting the parcel, derived by mapping softwareXCOORD - X coordinate of the centroid of the polygonYCOORD - Y coordinate of the centroid of the polygonLOC_ADDRESS - The location address for a parcelMUNI - The municipality the parcel resides inST_NUM - Street Number of the Situs AddressNUM_SUF - Street Number Suffix of the Situs AddressDIR - Street directional of the Situs Address (N, E, S, W)ST_NAME - Street Name of the Situs AddressST_TYPE - Street thorough fair type of the Situs AddressUNIT - Unit Type (see codes below)UNIT_N - Unit numberAD_ROLE - Situs Address Functional Role (see below for list of codes)NO_ADDR_CODE - No longer usedTILE_1200 - Outdated reference system, no longer usedTILE_2400 - Outdated reference system, no longer usedSUBDIV_NUMBER - Number assigned by Recorder of Deeds to a recorded documentLOT - Lot number given to parcel on the recorded planLAND_DEV_ID - Number assigned by Planning Commission for their tracking purposesCREATE_DATE - Date the parcel was mapped into the inactive parcel layerACTIVE_DATE - Date the parcel was added to the active parcel layerOWN1 - Owner of recordOWN2 - Owner of record if more than oneADDR1 - Component of the mailing address on recordADDR2 - Component of the mailing address on recordADDR3 - Component of the mailing address on recordZIP1 - Zipcode of mailing address on recordTAXYR - For Assessment purposesJURIS - Municipality Number where parcel is taxedBOOK - The book number of the recorded deedPAGE - The page number of the recorded deedDEED_REC_DATE - Date the latest deed was recordedLEGAL1 - Description of property location according to the deedLEGAL2 - Description of the taxable property and buildings according to the deedLUC - Landuse code assigned by assessment office. (unrelated to municipal zoning of a parcel) ((see below for list of codes))CLASS - General landuse classification assigned by assessment office (see below for list of codes)LOT_ASSESS - Assessed value of the landPROP_ASSESS - Assessed value of the structuresTOT_ASSESS - Assessed value of the combination of land and structuresFMV319 - Fair Market Value if not under 319FMV515 - Fair Market Value if not under 515LAST_SALE_PRICE - Last recorded sale priceASMNT_DATE - For Assessment Department use onlySCHDIST - The school district within which the parcel resides (see below for list of codes)SUBDIV_NAME - Name of the recorded planPLAN_NUM - Number assigned by the Planning Commission for their tracking purposesMODIFY_DATE - Last edit date of the parcel Data Dictionary Code1000= Parcel1010= Condominium (mother or host parcel)1011= Common Law Condo1020= Hydrography1031= Paper ROW1033= Land polygon with a ROW1034= Land dedicated to an existing ROW1035=- Private Road1040= Open Space1042= Common Area1043= Open Space owned by Homeowners Association1710= Parcel Assessed in Lancaster County but located in Chester County1711= Parcel Assessed in Berks County but located in Chester County1712= Parcel Assessed in Montgomery County but located in Chester County1713= Parcel Assessed in Delaware County but located in Chester County1714= Parcel Assessed in New Castle County but located in Chester County1715= Parcel Assessed in Cecil County but located in Chester County2000= Parcel bisected by a ROW (Duplicate Pin)2040= Open Space (Duplicate Pin)2042= Common Area (Duplicate Pin)2043= Open Space owned by Homeowners Association2010= Condominium (Duplicate Pin) LUCC-10= Banks, Savings&LoanC-20= Gas StationC-30= Restaurants, Stores (Retail)C-35= Condominium StoresC-40= Motels, HotelsC-41= Nursing HomesC-50= Shopping CentersC-60= Office Bldgs/Laboratory/LibraryC-65= Office CondoC-67= Office Condo Common LawC-70= Commercial Garage/Shop/Car DealersC-80= WarehouseC-81= Storage TanksC-90= Entertainment, RecreationC-91= Recreation (Private)C-92= Mobile Home Parks (4+)C-93= Burial Grounds/MausoleumC-94= AirportsC-95= Private SchoolsC-96= Commercial OBY onlyE-10= ChurchesE-11= CemetariesE-12= Service ConnectedE-13= Chester County PropertyE-20= SchoolsE-30= Public UtilitiesE-40= RailroadsE-50= Hospitals, etcE-60= StateE-61= State ParksE-62= FederalE-63= FederalE-70= Local Government (Townships & Boroughs)E-71= Local Government ParksE-80= Non-Profit OrganizationsE-90= Fire CompaniesF-10= Farm 10-19.99 AcresF-20= Farm 20-79.99 AcresF-40= Farm 80 Acres and overM-10= Heavy IndustrialM-20= Light IndustrialM-25= Light Industrial CondominiumM-30= Quarry/LandfillN-01= Not assessed in Chester CountyR-10= Single Family/CabinR-20= Two FamilyR-30= Multi Family/Dorms/SingleR-40= Apartments (4-19 Units)R-50= CodominiumR-55= Town House (Common Law Condo)R-60= Dwelling W/Comm Use Primary RR-61= Dwelling W/Comm Use Primary CR-70= Mobile HomeR-80= Barns, Stables, Pools, Misc BldgR-90= Apartment Complex (20 or more units)R-95= Common Elements (Not Open Space)T-10= Trailers and Mobile HomesU-03= Public UtilitiesU-04= RailroadsV-10= Vacant Land ResidentialV-11= Vacant Land CommercialV-12= Open SpaceV-13= Road Beds, Right of Way, Access WayV-14= Basins, Drainage ControlV-35= Condo Store/Vacant Common ElementV-50= Condo/Vacant Common ElementV-55= Condo Common Law/Common AreaV-65= Condo Office/Vacant Common ElementV-67= Condo Common Law Office/Common AreaClassA= ApartmentC= CommercialE= ExemptF= FarmI= IndustrialR= ResidentialU= Utility

SchDist1= Avon Grove2= Coatesville3= Downingtown4= Kennett Consolidated5= Octorara6= Owen J. Roberts7= Oxford8= Phoenixville9= Twin Valley10= Unionville Chaddsford11= West Chester12= Great Valley13= Tredyffrin-Easttown14= Springford

Clipped to Counties - Mapping Area polygon - High resolution land cover dataset for the Delaware River Basin, an area comprised of parts of six counties in the state of New York and four counties in Pennsylvania. Seven land cover classes were mapped: (1) tree canopy, (2) grass/shrub, (3) bare earth, (4) water, (5) buildings, (6) roads, and (7) other paved surfaces. The minimum mapping unit for the delineation of features was set at six square meters. The primary sources used to derive this land cover layer were 2008 LiDAR data and 2010 - 2011 NAIP imagery. LiDAR coverage was complete for the Pennsylvaia portion of the AOI, however, LiDAR was unavailable for large portions of the New York portion. Where LiDAR was not available, imagery was the primary data source. Ancillary data sources included GIS data (eg. such as hydrology, breakline and buildings) provided by the counties of Lackawana, Monroe, Pike and Wayne, PA, as well as the New York State GIS Clearinghouse. Some of these vector datasets were edited by the UVM Spatial Analysis lab through manual interpretation. Other datasets, such as bare soil, were created by the UVM Spatial Anyslsis Lab in order to assist in landcover creation. This land cover dataset is considered current for Pennsylvania portion of the study area as of summer 2010. The dataset is current as of summer 2011 for the New York counties of Chenango, Delaware, Orange and Sullivan. Broome County, NY, is considered current as of summer 2010. Ulster County, NY, employed data from both summer 2010 and summer 2011, therefore currentness varies throughout the county. Object-based image analysis techniques (OBIA) were employed to extract land cover information using the best available remotely sensed and vector GIS datasets. OBIA systems work by grouping pixels into meaningful objects based on their spectral and spatial properties, while taking into account boundaries imposed by existing vector datasets. Within the OBIA environment a rule-based expert system was designed to effectively mimic the process of manual image analysis by incorporating the elements of image interpretation (color/tone, texture, pattern, location, size, and shape) into the classification process. A series of morphological procedures were employed to insure that the end product is both accurate and cartographically pleasing. No accuracy assessment was conducted, but the dataset was subject to a thorough manual quality control.

This data is hosted at, and may be downloaded or accessed from PASDA, the Pennsylvania Spatial Data Access Geospatial Data Clearinghouse http://www.pasda.psu.edu/uci/DataSummary.aspx?dataset=3167

This index represents the coverage of the scans of DVRPC's non-orthorectified, mylar, aerial photo enlargements.. These polygons were developed to define the overall extent of the imagery, and to assist users in locating the particular images of interest to them.This layer includes a "STATUS" attribute field that indicates what scans are missing, however this is not a complete inventory of missing scans.Prior to the year 2000, DVRPC’s aerial imagery consisted of mylar aerial photo enlargements or “atlas sheets”. These atlas sheets were produced from 9x9" aerial photos. The imagery dates from the years 1959, 1965, 1970, 1975, 1980, 1985, 1990, & 1995. The 1959s and 1965s primarily cover the urbanized portion of the DVRPC region (the DVRPC region is made up of nine counties: Bucks, Chester, Delaware, Montgomery, and Philadelphia in Pennsylvania; Burlington, Camden, Gloucester, and Mercer in New Jersey). Subsequent years provide full coverage of the region, minus the occasional missing scan.In order to increase the efficiency of using the historical aerial imagery, the sheets were scanned into TIFF (Tagged Image File Format) files. Each TIFF file ranges between 35-40MB in size. Unlike DVRPC’s more recent aerial imagery (2000 and later), the historical aerials are not “orthorectified” or “orthocorrected”. In other words, they are simply aerial images with no spatial reference or uniform scale. Through the process of georeferencing, the scanned images can be assigned a spatial reference which will enable them to be used more readily in a GIS environment. That said, georeferencing is not orthorectifying or orthocorrecting. What it does allow is for the scan to be displayed relative to other spatially referenced GIS layers. A georeferenced scan does not have the properties of an actual orthoimage. Whereas an orthoimage can be used for making accurate measurements, a georeferenced image cannot, as it does not have the spatial accuracy and uniform scale of an orthoimage.