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Urbanized Area Maps
2010 Urbanized Areas
The U.S. Census Bureau recently completed the delineation of urbanized areas based off of the 2010 Census. Interested parties can now access the GIS shapefiles that depict urbanized areas and urban clusters across the US. EPA will not be developing a set of digitized maps from this data. Instead, the Census Bureau will be completing this task directly. The urbanized area and cluster maps are expected to be completed in the summer of 2012. The data can be accessed from the following link:
2010 Census Urban and Rural Classification and Urban Area Criteria
2000 Urbanized Areas
EPA developed a set of digitized maps for each urbanized area (PDF) (3 pp, 264K) as defined by the 2000 US Census. These maps were intended to assist authorized states (and EPA Regional Offices for unauthorized states) as they develop their Phase II municipal programs and permits. Municipalities can also use these maps as they outline the area that will require coverage (PDF) (4 pp, 247K) under an NPDES permit and development and implementation of a Stormwater Management Plan.
Maps
For each 2000 urbanized area, two maps were developed:
- Overview - Provides a general outline of the "urbanized area," including incorporated areas or areas of a county that are included within the "urbanized area."
- Detailed Map with Roads - Adds street level details so that the exact boundaries of the urbanized area can easily be determined. (Note: This file may appear black when first opened. Use the zoom tool in Adobe Acrobat (5.0) to clearly view the street level detail.)
Note: For urban areas that extended beyond State lines, locate the specific urban area map information by selecting the major central city. For example, the urban area map information for Alexandria, Virginia is found by accessing the urban area map for Washington, DC.
State Summary
A summary file of the 2000 urbanized area was created for each state. It contains two tables:
- Urbanized Areas - Provides detail on the places (towns, suburbs, other incorporated areas, etc.) that are included in each 2000 urbanized area. (This table updates Appendix 6 of the Preamble to the Final Phase II regulations.)
- Areas Outside Urbanized Areas - Contains a list of areas outside the designated "urbanized areas" which meet the Phase II population and density qualifications (population greater than 10,000 people and a population density of 1,000 people per square mile). These areas may be designated by the permitting authority as requiring permit coverage under the Stormwater Phase II regulations. (This table updates Appendix 7 of the Preamble to the Final Phase II regulations.)
| EPA Region and States |
| Region 1 |
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
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| Region 2 |
New Jersey, New York, Puerto Rico
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| Region 3 |
Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia
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| Region 4 |
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee
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| Region 5 |
Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin
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| Region 6 |
Arkansas, Louisiana, New Mexico, Oklahoma, Texas
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| Region 7 |
Iowa, Kansas, Missouri, Nebraska
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| Region 8 |
Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming
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| Region 9 |
Arizona, California, Hawaii, Nevada
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| Region 10 |
Alaska, Idaho, Oregon, Washington
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You will need Adobe Reader to view some of the files on this page. Files are best viewed in Internet Explorer and Adobe 8.0 or higher. See EPA's PDF page to learn more.
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