Chatham County, NC Zip Code polygons as maintained by the Chatham County E-911 Addressing Specialist. The original dataset comes from the Census Bureau which releases the GIS data to the public in the form of TIGER/Line Shapefiles. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. ZIP Code Tabulation Areas (ZCTAs) are approximate area representations of U.S. Postal Service (USPS) ZIP Code service areas that the Census Bureau creates to present statistical data for each decennial census. The Census Bureau delineates ZCTA boundaries for the United States, Puerto Rico, American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands once each decade following the decennial census. Data users should not use ZCTAs to identify the official USPS ZIP Code for mail delivery. The USPS makes periodic changes to ZIP Codes to support more efficient mail delivery. The Census Bureau uses tabulation blocks as the basis for defining each ZCTA. Tabulation blocks are assigned to a ZCTA based on the most frequently occurring ZIP Code for the addresses contained within that block. The most frequently occurring ZIP Code also becomes the five-digit numeric code of the ZCTA. These codes may contain leading zeros. Blocks that do not contain addresses but are surrounded by a single ZCTA (enclaves) are assigned to the surrounding ZCTA. Because the Census Bureau only uses the most frequently occurring ZIP Code to assign blocks, a ZCTA may not exist for every USPS ZIP Code. Some ZIP Codes may not have a matching ZCTA because too few addresses were associated with the specific ZIP Code or the ZIP Code was not the most frequently occurring ZIP Code within any of the blocks where it exists. The ZCTA boundaries in this release are those delineated following the 2010 Census.Chatham GIS SOP: "MAPSERV-14"

Polygon features representing the fire tax districts in Chatham County, NC.Chatham GIS SOP: "MAPSERV-25"

Polygons features derived from the Chatham County parcel polygon layer that identify the current zoning classifications for said parcels in Chatham County, NC. This feature class also contains boundaries for the Town of Siler City & Town of Pittsboro ETJ's as well as polygons identifying unzoned areas in Chatham County.

The feature class is maintained by the Chatham County Planning Department.Chatham GIS SOP: "MAPSERV-82"

Line features that represent the boundaries of parcels within Chatham County, NC. The parcel lines feature class is maintained by the Chatham County GIS & Tax departments and is updated on a daily basis.Chatham GIS SOP: "MAPSERV-31"

Annotation feature class that provides labels for property boundary lengths and acreage of parcels in Chatham County, NC. This service also provides annotation for easements in the Chatham County parlines feature class.

The annotation feature class is maintained by the Chatham County GIS & Tax departments and is updated on a daily basis.Chatham GIS SOP: "MAPSERV-163"

This feature class contains line features representing two-foot changes in elevation throughout Chatham County, NC. It is sourced from Quality Level 2 lidar data provided by the North Carolina Department of Public Safety Floodplain Mapping Program. LASD datasets were created referencing the tiled lidar data. Subsets were built using classified ground and water returns. Raster Digital Elevation Models (DEMs) were built by binning the points and averaging elevation values within 15 m x 15 m cells. The resulting DEMs were mosaicked to a contiguous ground elevation raster covering the entire county. Areas without ground point coverage that are covered by water bodies were patched by using DEMs derived from binned water elevation values. Contour lines were derived from the contiguous, patched DEM at various contour intervals.

This feature class contains line features representing two foot changes in elevation throughout Chatham County, NC. The contour data can be used in various applications throughout Chatham Counties' different departments and also serves as important layer in Chatham Counties' topographic basemap utilized in various web mapping applications.Chatham GIS SOP: "MAPSERV-57"

Point features representing known survey locations in Chatham County, NC provided by North Carolina Geodetic Survey (NCGS). These features provide survey reference to the Chatham County GIS department aiding in their cadastral mapping routines providing greater accuracy.Chatham GIS SOP: "MAPSERV-96"

Town of Cary zoning classifications for the portion of Cary that extends into Chatham County, NC.

This service is utilized in land use and planning web applications for reference purposes.Chatham GIS SOP: "MAPSERV-80"

Polygon features delineating Zoning classifications for the Town of Siler City including the Siler City ETJ. Data is maintained by the Chatham County GIS department via updates sent from Town of Siler City Planning Department on an as needed basis.

Last Updated June 2015.Chatham GIS SOP: "MAPSERV-85"

River and Stream lines that represent flowlines and cartographic features such as stream centerlines and river banks in Chatham County, NC. This feature class contains named streams, rivers, and creeks located within and along the Chatham County boundary. These named waterline features serve as an integral part of the basemap layers utilized in Chatham Counties' enterprise GIS web applications.Chatham GIS SOP: "MAPSERV-114"

Polygon features depicting the boundaries of recorded subdivisions within Chatham County, NC.

The data is created and maintained by the Chatham County GIS Department as part of the cadastral feature dataset.Chatham GIS SOP: "MAPSERV-38"

Point features representing points of interest throughout Chatham County, NC that may not be an incorporated municipality, but are significant & identifiable landmarks on a map. This feature class is primarily utilized for county-wide map layouts to give points of reference to readers of said maps.

The data is maintained by the Chatham County GIS department and the last date of update is unknown.Chatham GIS SOP: "MAPSERV-90"

Points that represent significant facility locations in Chatham County, NC. Examples include schools, government facilities, stadiums, casinos, and fire stations. In some cases, there may be multiple FacilitySitePoints for a single FacilitySite polygon. Additional information about each Facility can be organized in to seperate tables and related to these locations using the FacilityID key. The feature classification and type schema for the facility sites grew out of work with the Department of Homeland Security's HSIP Program and has evolved to support a diverse set of facilities inventoried for a variety of uses by a local government. The facility site points feature class is utilized in the development and maintenance of the Chatham County, NC basemaps.Chatham GIS SOP: "MAPSERV-93"

Polygon features representing different land cover classifications within Chatham County, NC. The source and currency of the data is unknown, but likely came from a state or federal agency.Chatham GIS SOP: "MAPSERV-102"

Polygon features depicting areas of deeded or platted easements on land parcels within Chatham County, NC.Data is maintained by the Chatham County GIS department on an as needed basis.Chatham GIS SOP: "MAPSERV-35"

Locations of historic Chatham County mines provided by the North Carolina Geological Survey department. The mine locations were collected as part of a larger geological survey of Chatham County.Data was imported in the Chatham County GIS SQL database in March 2017 and data will be maintained by Chatham County GIS moving forward in collaboration with the North Carolina Geological Survey.Chatham GIS SOP: "MAPSERV-72"

Polygon features delineating the municipal boundaries in Chatham County, NC.Chatham GIS SOP: "MAPSERV-22"

Line features representing railroad tracks in Chatham County, NC. The feature geometry was downloaded from the NCDOT website in July 2015 and imported into Chatham Counties' enterprise GIS database utilizing Esri's local government information data schema.Chatham GIS SOP: "MAPSERV-110"

Line features that represent special line types pulled from surveys, historical documents, etc. within parcels located in Chatham County, NC. This service only includes lines tagged as various types of easements.

The parlines feature class is maintained by the Chatham County GIS & Tax departments and is updated on a daily basis.Chatham GIS SOP: "MAPSERV-33"