ZIP Code 08243 — Sea Isle City, NJ
08243 is a standard (street delivery) ZIP code serving Sea Isle City, New Jersey, in Cape May County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 08243 at a glance
| ZIP code | 08243 |
|---|---|
| Primary city | Sea Isle City |
| State | New Jersey (NJ) |
| County | Cape May FIPS 34009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,000 |
| Coordinates | 39.152350, -74.697580 |
How ZIP+4 works in 08243
The four digits after the hyphen encode a delivery segment inside 08243. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 08243 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 08243.
| ZIP | City | Distance |
|---|---|---|
| 08248 | Strathmere, NJ | 3.5 mi |
| 08230 | Ocean View, NJ | 3.6 mi |
| 08246 | South Seaville, NJ | 4.2 mi |
| 08202 | Avalon, NJ | 4.7 mi |
| 08245 | South Dennis, NJ | 6.7 mi |
| 08210 | Cape May Court House, NJ | 7.1 mi |
| 08247 | Stone Harbor, NJ | 8.3 mi |
| 08223 | Marmora, NJ | 8.4 mi |
| 08226 | Ocean City, NJ | 9.5 mi |
| 08270 | Woodbine, NJ | 9.7 mi |
| 08244 | Somers Point, NJ | 12.4 mi |
| 08260 | Wildwood, NJ | 13.3 mi |
Questions about 08243
What is the ZIP+4 code for 08243?
08243 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 08243, you need to look up a specific street address to get them.
What city is 08243?
08243 is assigned to Sea Isle City, New Jersey, in Cape May County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
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