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/198

ZIP codes starting with 198

ZIP codes
25
States
DE
Largest city
Wilmington, DE
Population
222,353

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 198xx

ZIP codes starting with 198
ZIP City Type Population Median income Median home
19801 Wilmington , DE Standard 16,327 $52,810 $199,900
19802 Wilmington , DE Standard 26,051 $53,812 $194,600
19803 Wilmington , DE Standard 22,279 $135,218 $457,200
19804 Wilmington , DE Standard 18,779 $79,701 $264,100
19805 Wilmington , DE Standard 41,402 $60,221 $237,100
19806 Wilmington , DE Standard 9,777 $88,855 $386,000
19807 Wilmington , DE Standard 7,815 $153,341 $936,900
19808 Wilmington , DE Standard 39,082 $94,234 $337,800
19809 Wilmington , DE Standard 14,311 $81,288 $314,900
19810 Wilmington , DE Standard 26,530 $112,775 $440,600
19850 Wilmington , DE No street area — — —
19880 Wilmington , DE No street area — — —
19884 Wilmington , DE No street area — — —
19885 Wilmington , DE No street area — — —
19886 Wilmington , DE No street area — — —
19890 Wilmington , DE No street area — — —
19891 Wilmington , DE No street area — — —
19892 Wilmington , DE No street area — — —
19893 Wilmington , DE No street area — — —
19894 Wilmington , DE No street area — — —
19895 Wilmington , DE No street area — — —
19896 Wilmington , DE No street area — — —
19897 Wilmington , DE No street area — — —
19898 Wilmington , DE No street area — — —
19899 Wilmington , DE No street area — — —

Cite this page

zipcodes.pro. “ZIP codes starting with 198.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/198

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