Melissa Data: zip code information

melissadata.com

Since 1985, Melissa Data has been a leading provider of data quality and address management solutions. Melissa Data’s data quality software, Cloud services and data integration components verify, standardize, consolidate, enhance and update U.S., Canadian, and global contact data, including addresses, phone numbers and email addresses for improved communications and ROI. More than 5,000 companies rely on Melissa Data to gain and maintain a single, accurate and trusted view of critical information assets.