Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — PREFIX/237

ZIP codes starting with 237

ZIP codes
8
States
VA
Largest city
Portsmouth, VA
Population
97,145

The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.

Every ZIP code in 237xx

ZIP codes starting with 237
ZIP City Type Population Median income Median home
23701 Portsmouth , VA Standard 24,298 $62,349 $235,200
23702 Portsmouth , VA Standard 12,485 $48,835 $208,000
23703 Portsmouth , VA Standard 25,610 $78,707 $295,900
23704 Portsmouth , VA Standard 19,207 $49,583 $230,300
23705 Portsmouth , VA No street area — — —
23707 Portsmouth , VA Standard 14,766 $48,926 $230,800
23708 Portsmouth , VA Standard 269 — —
23709 Portsmouth , VA Standard 510 — —

Cite this page

zipcodes.pro. “ZIP codes starting with 237.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/237

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