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1. ZIP Code Boundaries, United States (Q3 2011)

2011. TTG, Inc. This polygon shapefile contains zip code boundaries for the United States. Data are valid from July to September, 2011. Attributes included in the ... TTG, Inc.

2. ZIP Code Boundaries, United States (Q4 2011)

2011. TTG, Inc. This polygon shapefile contains zip code boundaries for the United States. Data are valid from October to December, 2011. Attributes included in th... TTG, Inc.