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The boundaries of ZIP Codes and census tracts often don't match.

Primary state prefixes. ZIP Codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city) and the fourth and fifth digits representing a group of delivery addresses within that region.

Step 1: Locate the table you want. Select the Download button. Step 3: Click on the Download Now button and open the zip file that appears in the bottom left corner. Step 2: Check boxes next to the desired Table Vintages.

The Census Bureau offers a few statistical products by ZIP Code through our economic surveys. These data are available through data.census.gov. Please contact the US Postal Service for additional information about ZIP codes.

Data.census.gov does not have an address search feature available. However, you can access geographic information, such as the state, county, tract number, block number, and block group number, about a particular address using the Census Geocoder.

Find both public use data and restricted datasets listed at the Center for Economic Studies website. The new CEDSCI data dissemination site, data.census.gov, is a catalog of public Census data. Census Academy offers webinars on how to use the publicly available data.

Also called ?plus-four codes?, ?add-on codes?, or ?add-ons?, the ZIP+4 code starts with the standard five-digit ZIP Code. The four extra numbers are added after a hyphen to complete the ZIP+4. So what do the extra numbers mean? These last 4 digits represent specific delivery routes within delivery areas.

Stores want your ZIP code because, combined with your name from your credit card, they can use it to find out other information about you from commercial databases, like your full mailing address. They may even sell the information to data brokers, who sell it to other marketers.

Over 1,000 ZIP codes have been decomissioned as post offices close or the needs of the United States Postal Service change.

ZIP Codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city) and the fourth and fifth digits representing a group of delivery addresses within that region.