Every Chicago ZIP code appears on an Illinois Department of Public Health list requiring that children be tested for lead exposure.

Several Chicago-area suburbs have been labeled "high-risk" for lead poisoning in children, health officials said Thursday.

A new area code will be issued for phone numbers in many areas in Colorado starting next year.

Customers should prepare for 10-digit dialing and the introduction of the new 483 area code. The 334 area code covers a large portion of central and southeast Alabama.

Current 912 area code users will retain their numbers; new users will eventually be assigned the 565 code. The 912 area code, established in 1954, has been split multiple times to accommodate growth.

Even though Lehi is one of the most populated cities in the state, it has only ever had one ZIP code. Now some Lehi residents have a new ZIP code.

Towns and cities from California to New Hampshire could have new zip codes under this bill. This map shows which communities would have a new zip code.

80305 is the most-educated ZIP code in the Denver metro. That's according to a recent analysis by The Business Journals, which analyzed more than 33,200 ZIP codes across the nation — looking ...

The UTC announces the transition from Seattle's 206 area code to 564 to ensure number availability in western Washington.

Walmart says its use of honeycomb-style map segments is helping expand same-day delivery to 12 million more US households.

Harris County Public Health released its 2015–2022 report on HIV and STI cases per ZIP code across the county.

People transferring cash in California and Texas could be asked for personal information as part of a new Trump initiative to combat cartel money laundering.