Zip Codes
Keywords: US Postal Service
Published: 2001
Richmond GIS Layer Inventory
Contact Richmond GIS
 
Description
  Abstract: Represents US Postal Service (USPS) Zip Codes.
  Purpose: To define/describe the extent and boundaries of zip codes for use in GIS. This GIS layer is used to relate properties (hence addresses) to the correlating school zone for use in the City's data warehousing and central address systems.
  Supplemental Information: The City of Richmond symbolized parcels using Central Address and CAMA-based zip code values and interpreted where zip code boundaries might be. More specifically, ZIP Codes are the 5-digit codes the US Postal Service assigns to every address to help make mail delivery more efficient. ZIP Codes are not really boundaries at all. In reality, "ZIP Codes" are simply collections of addresses that have the same 5-digit code. They usually don't follow legal town/city boundaries and usually don't follow the set of geography defined by the census bureau. They are established for mail carriers that follow routes. The USPS doesn't produce ZIP Code maps. A common way to establish zip codes is by geocoding a file that contains ZIPS and to subsequently interpret where a boundary might exist.
 
Contact
  Custodian: John Taylor
  Department: Planning and Development Review
  Position: Planner II
  Address: 900 E Broad St, Rm 510
  City: Richmond
  State: Virginia
  Zip Code: 23219
  Email: John.W.Taylor@richmondgov.com
 
Time Period of Content
  Date: unknown
 
Status
  Progress: Complete
  Update Frequency: None planned
 
Spatial Domain
  West Coordinate: -77.602321
  East Coordinate: -77.384518
  North Coordinate: 37.604067
  South Coordinate: 37.447212
 
Spatial Data Information
  Data Type: vector digital data
  Data Format: SDE Feature Class
  Data Projection: Lambert Conformal Conic
 
Access and Usage Information
  Access Constraints: none
  Use Constraints: All GIS layers and datasets are owned by the City of Richmond and cannot be modified, re-distributed, and/or re-sold without a sub-licensing agreement. All guarantees of validity expire once a dataset leaves the City of Richmond firewall or physical premises. Acknowledgement of the City of Richmond GIS would be appreciated in products derived from these data.
 
Entity and Attribute Information
  Entity Name: vector.ric.area_ZipCode
  Entity Type: Feature Class
  Entity Count: 14