Adjusted Urban Areas eng; USA 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 information applies to the dataset Gary Greening Federal Highway Administration (FHWA) Transportation Specialist (202) 366-5001 1200 New Jersey Ave. SE Washington DC 20590 United States gary.greening@dot.gov party who can be contacted for acquiring knowledge about or acquisition of the resource 2025-11-13 ISO 19139 Geographic Information - Metadata ISO/TS 19139:2007 3857 EPSG Adjusted Urban Areas 2025-07-08 date identifies when the resource was brought into existence 2025-11-10 date identifies when the resource was examined or re-examined and imporved or amended Federal Highway Administration (FHWA) party who created the resource map represented in raster or vector form The 2020 Adjusted Urban Areas dataset was compiled on December 31, 2020 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The 2020 Federal Highway Administration (FHWA) Adjusted Urban Areas layer delineates the boundaries of adjusted urban areas as defined by the FHWA, based on the 2020 U.S. Census urban area boundaries. This nationwide geospatial dataset represents urbanized areas that have been modified through coordination between FHWA Division Offices, State Departments of Transportation (DOTs), and Metropolitan Planning Organizations (MPOs), in accordance with FHWA's Urban Area Boundary Adjustment guidelines. These boundaries are used for transportation planning and programming, eligibility determinations, and analysis purposes related to Federal-aid highway programs. A data dictionary, or other source of attribute information, is accessible at https://www.transportation.gov/gis/nad/nad-schema This dataset provides a standardized, authoritative national representation of adjusted urban areas to support FHWA programs and policies. It is intended for use by transportation planners, analysts, policy makers, and engineers at federal, state, and local levels. The adjusted urban areas are used to define boundaries for urban/rural functional classification, determine project eligibility under various federal programs, and assist in long-range planning and transportation performance monitoring. The dataset supports efforts to maintain consistent and coordinated planning across jurisdictions following the decennial Census. This dataset was developed by the Federal Highway Administration (FHWA), Office of Planning, based on the submittals by State Departments of Transportation (DOTs), and distributed by the Bureau of Transportation Statistics (BTS). Source data is based on the 2020 U.S. Census Bureau urban area boundaries. Compilation, quality control, and publication of the national dataset were conducted by the FHWA Office of Planning and GIS specialists. data is continually being updated Gary Greening Federal Highway Administration (FHWA) Transportation Specialist (202) 366-5001 1200 New Jersey Ave. SE Washington DC 20590 United States gary.greening@dot.gov party who can be contacted for acquiring knowledge about or acquisition of the resource data is updated as deemed necessary NTAD National Transportation Atlas Database National Transportation Atlas Database vector polygon Boundaries Urban Rural keyword identifies a particular subject or topic none USA National keyword identifies a location none This NTAD dataset is a work of the United States government as defined in 17 U.S.C. § 101 and as such are not protected by any U.S. copyrights. This work is available for unrestricted public use. limitation not listed Access Constraints: unrestricted National Transportation Atlas Database 2025-11-10 publication Bureau of Transportation Statistics (BTS) party who published the resource reference to a master dataset of which this one is a part vector data is used to represent geographic data eng; USA boundaries Native Dataset Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362 2020-12-31 1 2020 Adjusted Urban Areas A data dictionary resource of attribute information is accessible at https://doi.org/10.21949/41hd-cj38 Open Data Catalog 1.0 ArcGIS REST Services Directory Feature Server (WFS) 11.5 Bureau of Transportation Statistics (BTS) NTAD Program Manager 1200 New Jersey Ave. SE Washington DC 20590 United States ntad@dot.gov party who distributes the resource None. No fees are applicable for obtaining the dataset. https://doi.org/10.21949/w6az-8a19 http Open Data Catalog Web page to view and download dataset. The file download formats available include: ESRI File Geodatabase or Shapefile, GeoPackage, Comma-Seperated Values (CSV), Microsoft Excel, GeoJSON, KML, Feature Collection, and SQLite Geodatabase. online instructions for transferring data from one storage device or system to another https://doi.org/10.21949/xer7-1086 http ArcGIS REST Services Directory Feature Server (WFS) complies with OGC WFS Map Service for visualizing geospatial information online instructions for transferring data from one storage device or system to another information applies to the dataset Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. This dataset was compiled by FHWA Headquarters from state-level submittals of adjusted urban area boundaries following the release of the 2020 Census urban area geography. Each state's adjusted boundaries were developed through coordination among FHWA Division Offices, State DOTs, and relevant MPOs, using FHWA guidance for urban area boundary adjustments. The submitted boundaries were reviewed by FHWA for consistency with national policy, topological soundness, and alignment with 2020 Census urban areas. Final submissions were merged into a single national layer and standardized to ensure attribute consistency, geometry integrity, and nationwide coverage. data is updated as deemed necessary Gary Greening Federal Highway Administration (FHWA) Transportation Specialist (202) 366-5001 1200 New Jersey Ave. SE Washington DC 20590 United States gary.greening@dot.gov party that accepts accountability and responsability for the data and ensures appropriate care and maintenance of the resource