ZIP Code 01534 — Northbridge, MA
01534 is a standard (street delivery) ZIP code serving Northbridge, Massachusetts, in Worcester 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 01534 at a glance
| ZIP code | 01534 |
|---|---|
| Primary city | Northbridge |
| State | Massachusetts (MA) |
| County | Worcester FIPS 25027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 6,230 |
| Coordinates | 42.139910, -71.644330 |
How ZIP+4 works in 01534
The four digits after the hyphen encode a delivery segment inside 01534. 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 01534 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 01534.
| ZIP | City | Distance |
|---|---|---|
| 01588 | Whitinsville, MA | 1.9 mi |
| 01525 | Linwood, MA | 2.8 mi |
| 01560 | South Grafton, MA | 3 mi |
| 01568 | Upton, MA | 3.2 mi |
| 01519 | Grafton, MA | 4.6 mi |
| 01590 | Sutton, MA | 5.5 mi |
| 01569 | Uxbridge, MA | 5.6 mi |
| 01747 | Hopedale, MA | 5.7 mi |
| 01756 | Mendon, MA | 5.7 mi |
| 01757 | Milford, MA | 6.5 mi |
| 01536 | North Grafton, MA | 6.8 mi |
| 01527 | Millbury, MA | 7.6 mi |
Questions about 01534
What is the ZIP+4 code for 01534?
01534 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 01534, you need to look up a specific street address to get them.
What city is 01534?
01534 is assigned to Northbridge, Massachusetts, in Worcester 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.