ZIP Code 01012 — Chesterfield, MA
01012 is a standard (street delivery) ZIP code serving Chesterfield, Massachusetts, in Hampshire 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 01012 at a glance
| ZIP code | 01012 |
|---|---|
| Primary city | Chesterfield |
| State | Massachusetts (MA) |
| County | Hampshire FIPS 25015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 397 |
| Coordinates | 42.384950, -72.846750 |
How ZIP+4 works in 01012
The four digits after the hyphen encode a delivery segment inside 01012. 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 01012 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 01012.
| ZIP | City | Distance |
|---|---|---|
| 01084 | West Chesterfield, MA | 1.8 mi |
| 01096 | Williamsburg, MA | 4.2 mi |
| 01032 | Goshen, MA | 4.9 mi |
| 01098 | Worthington, MA | 5 mi |
| 01050 | Huntington, MA | 6.6 mi |
| 01026 | Cummington, MA | 7 mi |
| 01053 | Leeds, MA | 7.3 mi |
| 01039 | Haydenville, MA | 8.1 mi |
| 01027 | Easthampton, MA | 8.1 mi |
| 01011 | Chester, MA | 8.3 mi |
| 01062 | Florence, MA | 9 mi |
| 01330 | Ashfield, MA | 9.3 mi |
Questions about 01012
What is the ZIP+4 code for 01012?
01012 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 01012, you need to look up a specific street address to get them.
What city is 01012?
01012 is assigned to Chesterfield, Massachusetts, in Hampshire 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.