A recent study compares postal zones, ranking those with the most in-demand listings and the fastest-selling homes.

Esri's Tapestry technology includes a ZIP code lookup feature where you can see the top demographics, culture, and lifestyle choices in your area.

Q: Is there a new ZIP code in use in Huntsville, 35813? If so what are the boundries? -- Tom Stramiello, Huntsville A: Debra Fetterly, spokeswoman for the U.S. Postal Service, said ZIP code 35813 ...

ZIP codes were unveiled in 1962, but it was more than 20 years before the U.S. Postal Service announced nearly 100% compliance with the five-digit system.