If a ZIP Code boundary covers more than one city, each city is listed as a separate record (a sequence number indicates the primary city/town based on greatest population to the least).
Bonus: Included with the standard download is an extra file containing one record per ZIP Code for those wanting primary city only (thus, fewer records).
Comma-Separated Values (CSV) Text File
Official U.S. Postal Service five digit ZIP Code
U.S. Postal Service type codes:
B = Single High-volume Address
M = APO/FPO Military
E = P.O. Box Only
No value indicates standard general delivery
Official U.S. Postal Service state abbreviation
Federal Information Processing Standard (FIPS) 2‐digit state. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).
The name of the county in which the ZIP Code is found.
Federal Information Processing Standard (FIPS) 3‐digit county. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).
Official city name used by the U.S. Postal Service
Federal Information Processing Standard (FIPS) 5‐digit place (city/town). FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).
U.S. Postal Service city designation: P=Primary City, A=Acceptable City, N=Non‐Acceptable City.
A sequence number applied to each city/town within a single ZIP Code indicating the greatest population to the least for that ZIP Code.
Metropolitan Statistical Area (MSA) codes are greater metropolitan areas as defined by the U.S. Office of Management & Budget. These areas usually represent the surrounding county or counties (if within commuting distance) of a city having 50,000 plus inhabitants.
Primary area code for each ZIP Code.
Standardized based on Coordinated Universal Time (UTC). Time zones range from ‐5 (Eastern Standard Time) to ‐10 (Hawaiian Standard Time).
Indicates if Daylight Savings Time is observed in that ZIP Code.