ZIP Code Boundaries, United States (Q4 2011)

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This polygon shapefile contains zip code boundaries for the United States. Data are valid from October to December, 2011. Attributes included in the data are location, area/perimeter, county names, FIPS and USPS codes, and alternate names. These data are updated quarterly using the latest feeds from the U.S. Postal Service with additional sources being used to cross-check the data.
This layer provides zip code data for view and analysis in GIS and interactive web mapping applications.


Type of resource cartographic, software, multimedia
Form Shapefile
Extent 41.279
Place Bedford, MA,
Publisher TTG, Inc.
Date valid 2011
Publication date 2012
Language English
Digital origin born digital
Map data Scale not given. ; W 178°13ʹ31ʺ--W 64°41ʹ22ʺ/N 71°20ʹ3ʺ--N 17°41ʹ54ʺ, Scale not given ; EPSG::4326


Creator TTG, Inc.


Subject Zip codes
Subject United States
Subject 2011
Subject Boundaries
Genre Geospatial data
Genre Cartographic dataset

Bibliographic information

Access conditions

Use and reproduction
These data are licensed by Stanford Libraries and are available to Stanford University affiliates only. Affiliates are limited to current faculty, staff and students. Non affiliates seeking access should contact the publisher directly. These data may not be reproduced or used for any purpose without permission.
Copyright ownership resides with the originator.

Preferred citation

Preferred citation
TTG, Inc. (2012). ZIP Code Boundaries, United States (Q4 2011). TTG, Inc. Available at:


5-digit zip code boundaries for the United States

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