ZIP Code 02370 — Rockland, MA
02370 is a standard (street delivery) ZIP code serving Rockland, Massachusetts, in Plymouth 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 02370 at a glance
| ZIP code | 02370 |
|---|---|
| Primary city | Rockland |
| State | Massachusetts (MA) |
| County | Plymouth FIPS 25023 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 17,701 |
| Coordinates | 42.129500, -70.910020 |
How ZIP+4 works in 02370
The four digits after the hyphen encode a delivery segment inside 02370. 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 02370 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 02370.
| ZIP | City | Distance |
|---|---|---|
| 02351 | Abington, MA | 2.6 mi |
| 02339 | Hanover, MA | 2.8 mi |
| 02190 | South Weymouth, MA | 3.3 mi |
| 02382 | Whitman, MA | 3.7 mi |
| 02343 | Holbrook, MA | 5 mi |
| 02061 | Norwell, MA | 5.2 mi |
| 02302 | Brockton, MA | 5.4 mi |
| 02341 | Hanson, MA | 5.4 mi |
| 02189 | East Weymouth, MA | 5.7 mi |
| 02188 | Weymouth, MA | 5.9 mi |
| 02043 | Hingham, MA | 6.2 mi |
| 02333 | East Bridgewater, MA | 6.7 mi |
Questions about 02370
What is the ZIP+4 code for 02370?
02370 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 02370, you need to look up a specific street address to get them.
What city is 02370?
02370 is assigned to Rockland, Massachusetts, in Plymouth 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?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.