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QuickFacts provides easy access to facts about the people, business, and geography of the United States.

Accurate and up-to-date ZIP code databases and programs with ZIP code related information such as area code, county, latitude, longitude, MSA, PMSA, FIPS code, time zone, and place FIPS. ZIP code data available for immediate download. All ZIP code da...

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Texas Gazetteer with profiles for 9,201 populated places; physical, cultural and historic features for each of the 254; a cross index of ZIP Codes and Area Codes; census information for cities, towns, Counties and County subdivisions; maps, aerial ph...

Nielsen, a leading global information and measurement company, provides market research, insights & data about what people watch & what people buy.

ZIP Code Database list & Demographics - ZIP Codes by City with Boundary Data - Free ZIP Code Finder - or Download the Data - Maps, Zip Codes, Area Codes, Household Income, Current Population, Multi County Data, Postal codes, MSA codes, CBSA codes...

Home page of the United States House of Representatives

AZ.gov the Official Web Site of the State of Arizona - Your Access Point for all Arizona State Government News, Information, Services, and Agencies.

California Secretary of State Debra Bowen

United States Zip Codes provides a free zip code map and list of zip codes by state. Find zip codes by address, zip codes by city, or zip codes by state and compare shipping rates for USPS, UPS, and FedEx.