Residential delivery area · New Jersey
ZIP Code 08243: Sea Isle City, NJ
ZIP code 08243 is in Sea Isle City, New Jersey, entirely in Cape May County (Census 2020 ZIP-county file). About 2,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $108,359 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2021
- ZBP2023
- IRS2022
- Town
- Sea Isle City · its only residential ZIP
- County
- Cape May County
- Census places
- Sea Isle City
- Metro area
- Atlantic City-Hammonton, NJ
- House district
- NJ-2 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 2.2 sq mi · 907 people per sq mi
Where is ZIP code 08243?
08243 centers on 39.151°, -74.696° and covers 2.2 square miles of land plus 2.0 of water. It borders 4 ZIP codes: 08230, 08248, 08202, 08210.
The map draws ZIP code areas only. For the streets inside 08243, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 08243 compare with the rest of Cape May County?
| Measure | 08243 | In Cape May County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 2,000 | 10th of 16 | 509th of 598 |
| Median household income | $108k | 3rd of 10 | 267th of 476 |
| Median home value | $1.09M | 2nd of 11 | 16th of 515 |
Its median household income is higher than in 86% of U.S. residential ZIP codes, and it is denser than 78% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 08243?
The 2020 Census counted 2,104 people in 08243; the ACS, which samples households over 2020-2024, estimates 2,000. Between the 2010 and 2020 censuses its population fell 0.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,000±231 (90% margin)
- 2020 Census count
- 2,104−0.5% since 2010 (2,114)
- Households
- 1,117
- Median age
- 66.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 08243?
Of the 2,000 people the ACS estimates in 08243, 6.2% are under 18 and 52.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.5%).
- Under 186.2%
- 18 to 6441.2%
- 65 and older52.7%
- White, not Hispanic96.5%
- Hispanic or Latino1.8%
- Other or two or more1.7%
- Black, not Hispanic0.1%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 08243 earn?
Median household income is $108,359 (ACS 2020-2024), the 3rd highest of the 10 ranked ZIP codes in Cape May County. It is not measurably different from 2015-2019 ($90,065 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $108,359±$14,443
- Income per person
- $88,974
- Below the poverty line
- 5.4%
- Unemployed (of the labor force)
- 7.1%
- Adults 25+ with a bachelor's degree
- 48.7%
- Adjusted gross income per tax return, 2022
- $146,7641,100 returns; wages 39% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 08243?
- Median home value (owners' estimate)
- $1,087,300
- Median gross rent
- –
- Homes owned by their occupants
- 92.7%
- Housing units
- 6,719
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 08243?
158 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services54
- Retail trade27
- Real estate and rental and leasing20
- Construction16
- Arts, entertainment, and recreation9
- Other services (except public administration)9
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 08243?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 08230 | Ocean View | 5,700 | $115k | 3.5 mi |
| 08248 | Strathmere | 266 | $109k | 3.7 mi |
| 08202 | Avalon | 1,612 | $146k | 4.4 mi |
| 08210 | Cape May Court House | 17,143 | $90k | 7.1 mi |
| 08246 | South Seaville | 57 | – | 4.3 mi (near) |
| 08245 | South Dennis | 23 | – | 6.8 mi (near) |
| 08223 | Marmora | 4,048 | $107k | 8.5 mi (near) |
| 08247 | Stone Harbor | 965 | $168k | 8.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.