ZIP Code 02343 — Holbrook, MA
02343 is a standard (street delivery) ZIP code serving Holbrook, 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 02343 at a glance
| ZIP code | 02343 |
|---|---|
| Primary city | Holbrook |
| State | Massachusetts (MA) |
| County | Norfolk FIPS 25021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 11,346 |
| Coordinates | 42.147330, -71.004840 |
How ZIP+4 works in 02343
The four digits after the hyphen encode a delivery segment inside 02343. 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 02343 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 02343.
| ZIP | City | Distance |
|---|---|---|
| 02322 | Avon, MA | 2.7 mi |
| 02368 | Randolph, MA | 3 mi |
| 02190 | South Weymouth, MA | 3 mi |
| 02351 | Abington, MA | 3.1 mi |
| 02184 | Braintree, MA | 3.9 mi |
| 02302 | Brockton, MA | 4.1 mi |
| 02188 | Weymouth, MA | 4.8 mi |
| 02370 | Rockland, MA | 5 mi |
| 02301 | Brockton, MA | 5.2 mi |
| 02072 | Stoughton, MA | 5.3 mi |
| 02382 | Whitman, MA | 5.7 mi |
| 02189 | East Weymouth, MA | 5.8 mi |
Questions about 02343
What is the ZIP+4 code for 02343?
02343 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 02343, you need to look up a specific street address to get them.
What city is 02343?
02343 is assigned to Holbrook, 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.