ZIP codes in Tennessee range from 37010 (Adams) to 38589 (Wilder), with the most prevalent ZIP codes located in major urban centers. Some of these include 37201 (Nashville), 37902 (Knoxville), 37402 (Chattanooga), 38103 (Memphis), 37601 (Johnson City) and 38301 (Jackson).
With nearly 2,000 unique ZIP codes in Tennessee as of 2015, each major city in the state includes upwards of 20 unique ZIP codes, and hundreds of ZIP codes are assigned to rural areas based on geographic region. While Tennessee's ZIP codes range from 37010 to 38589, not every sequential ZIP code corresponds to a region within the state. ZIP codes frequently skip numerals to leave room for adding additional ZIP code regions in the future or for major organizations that require unique ZIP codes based on the volume of mail dealt with on a daily or annual basis.
When looking for a ZIP code for a particular mailing address or municipality, online resources are the quickest and most reliable source of information. The U.S. Postal Service and various third-party organizations provide ZIP code manifests on their websites that are easily searchable. Many of these services provide mapping systems that represent the various ZIP code regions geographically and allow the user to search based on known mailing addresses.