ZIP Code 02557 — Oak Bluffs, MA
02557 is a standard (street delivery) ZIP code serving Oak Bluffs, Massachusetts, in Dukes 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 02557 at a glance
| ZIP code | 02557 |
|---|---|
| Primary city | Oak Bluffs |
| State | Massachusetts (MA) |
| County | Dukes FIPS 25007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,250 |
| Coordinates | 41.442180, -70.566480 |
How ZIP+4 works in 02557
The four digits after the hyphen encode a delivery segment inside 02557. 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 02557 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 02557.
| ZIP | City | Distance |
|---|---|---|
| 02568 | Vineyard Haven, MA | 2.5 mi |
| 02539 | Edgartown, MA | 4.6 mi |
| 02575 | West Tisbury, MA | 5.6 mi |
| 02540 | Falmouth, MA | 9.5 mi |
| 02543 | Woods Hole, MA | 9.8 mi |
| 02536 | East Falmouth, MA | 10.7 mi |
| 02535 | Chilmark, MA | 11.3 mi |
| 02649 | Mashpee, MA | 12.7 mi |
| 02556 | North Falmouth, MA | 13.9 mi |
| 02635 | Cotuit, MA | 14.1 mi |
| 02534 | Cataumet, MA | 15.7 mi |
| 02655 | Osterville, MA | 15.8 mi |
Questions about 02557
What is the ZIP+4 code for 02557?
02557 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 02557, you need to look up a specific street address to get them.
What city is 02557?
02557 is assigned to Oak Bluffs, Massachusetts, in Dukes 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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