US ZIP Code Lookup

1. Search — Type a ZIP code (e.g. 10001), city name (e.g. New York), or state (e.g. NY).
2. Browse results — Matching ZIP codes appear in real-time as you type.
3. View details — Each result shows city, state, county, area code, timezone, and estimated population.

A ZIP Code (Zone Improvement Plan) is a postal code system used by the United States Postal Service (USPS) since 1963. The standard ZIP code notation uses 5 digits, while ZIP+4 codes add four additional digits for more precise location.

The first digit represents a group of U.S. states, the next two digits represent a region or city, and the final two digits represent a specific delivery area.

• 0xxxx — Northeast (ME, NH, VT, MA, RI, CT, NJ)
• 1xxxx — New York, PA, DE
• 2xxxx — DC, MD, VA, WV, NC, SC
• 3xxxx — GA, FL, AL, TN, MS
• 4xxxx — OH, KY, IN, MI
• 5xxxx — IA, MN, MT, ND, SD, WI
• 6xxxx — IL, MO, KS, NE
• 7xxxx — AR, LA, OK, TX
• 8xxxx — AZ, CO, ID, NM, NV, UT, WY
• 9xxxx — AK, CA, HI, OR, WA