ZIP Code 02030 — Dover, MA
02030 is a standard (street delivery) ZIP code serving Dover, Massachusetts, in Norfolk 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 02030 at a glance
| ZIP code | 02030 |
|---|---|
| Primary city | Dover |
| State | Massachusetts (MA) |
| County | Norfolk FIPS 25021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,930 |
| Coordinates | 42.236600, -71.284210 |
How ZIP+4 works in 02030
The four digits after the hyphen encode a delivery segment inside 02030. 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 02030 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 02030.
| ZIP | City | Distance |
|---|---|---|
| 02492 | Needham, MA | 3.4 mi |
| 02052 | Medfield, MA | 3.7 mi |
| 02090 | Westwood, MA | 3.9 mi |
| 02482 | Wellesley, MA | 4.1 mi |
| 02457 | Babson Park, MA | 4.3 mi |
| 01760 | Natick, MA | 4.7 mi |
| 01770 | Sherborn, MA | 4.7 mi |
| 02494 | Needham Heights, MA | 5.1 mi |
| 02481 | Wellesley Hills, MA | 5.1 mi |
| 02026 | Dedham, MA | 5.5 mi |
| 02062 | Norwood, MA | 5.8 mi |
| 02054 | Millis, MA | 6.1 mi |
Questions about 02030
What is the ZIP+4 code for 02030?
02030 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 02030, you need to look up a specific street address to get them.
What city is 02030?
02030 is assigned to Dover, Massachusetts, in Norfolk 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.