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 — CITY/NJ/SEA-ISLE-CITY

Sea Isle City ZIP code, New Jersey

The ZIP code for Sea Isle City, NJ is 08243, and its area codes are 609 and 640.

USPS city name
1 ZIP code
Population
2,000
Area codes
609, 640

Sea Isle City in numbers

About 2,000 people live in Sea Isle City, in 1,117 households. The median household income is $108,359 a year, 5% above the New Jersey median of $103,556 (US: $80,734). The median owner-occupied home is valued at $1,087,300 (2.4 times the New Jersey median). The median age is 66.1; 48.7% of adults 25 and over hold a bachelor's degree or higher (43.6% across New Jersey); the average commute takes 30 minutes.

Population2,000Sea Isle City2,000
Households1,117Sea Isle City1,117
Median age66.1Sea Isle City66.1New Jersey40.1US 38.9
Median household income$108,359Sea Isle City$108,359New Jersey$103,556US $80,734
Median home value$1,087,300Sea Isle City$1,087,300New Jersey$454,400US $332,700
Bachelor's degree or higher48.7%Sea Isle City48.7%New Jersey43.6%US 35.7%
Mean commute29.5 minSea Isle City29.5 minNew Jersey30.5 minUS 26.4 min
Population density907 / sq miSea Isle City907 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Sea Isle City city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Sea Isle City

ZIP codes with the USPS city name Sea Isle City
ZIP City Type Population Median income Median home
08243 Sea Isle City , NJ Standard 2,000 $108,359 $1,087,300

Map of Sea Isle City ZIP codes

08243

The ZIP codes of Sea Isle City, NJ, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Sea Isle City

The nearest larger towns are Seaville (2,589 people, 4.0 mi), Palermo (2,696 people, 5.8 mi) and Woodbine (2,023 people, 7.8 mi).

Towns near Sea Isle City
TownPopulationDistance
Seaville 2,589 4.0 mi
Palermo 2,696 5.8 mi
Cape May Court House 5,628 8.1 mi
Ocean City 11,261 9.9 mi
North Wildwood 3,602 11.2 mi
Whitesboro 2,766 11.5 mi
Somers Point 10,515 12.6 mi
Wildwood 5,130 12.9 mi
Rio Grande 3,485 13.1 mi
Wildwood Crest 3,077 14.3 mi
Linwood 6,992 15.1 mi
Villas 9,735 15.6 mi
English Creek 2,548 16.0 mi
Bargaintown 5,377 16.2 mi

More nearby: every ZIP code in Cape May County · New Jersey ZIP codes

Cite this page

zipcodes.pro. “Sea Isle City, NJ ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nj/sea-isle-city

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