ZIP Code 01128 — Springfield, MA
01128 is a standard (street delivery) ZIP code serving Springfield, Massachusetts, in Hampden 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 01128 at a glance
| ZIP code | 01128 |
|---|---|
| Primary city | Springfield |
| State | Massachusetts (MA) |
| County | Hampden FIPS 25013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,896 |
| Coordinates | 42.094970, -72.488060 |
How ZIP+4 works in 01128
The four digits after the hyphen encode a delivery segment inside 01128. 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 01128 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.
Other ZIP codes in Springfield
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 01128.
| ZIP | City | Distance |
|---|---|---|
| 01129 | Springfield, MA | 1.8 mi |
| 01118 | Springfield, MA | 1.9 mi |
| 01119 | Springfield, MA | 2.4 mi |
| 01028 | East Longmeadow, MA | 2.5 mi |
| 01109 | Springfield, MA | 3.5 mi |
| 01108 | Springfield, MA | 3.7 mi |
| 01095 | Wilbraham, MA | 3.7 mi |
| 01151 | Indian Orchard, MA | 4.1 mi |
| 01036 | Hampden, MA | 4.3 mi |
| 01105 | Springfield, MA | 4.6 mi |
| 01104 | Springfield, MA | 4.8 mi |
| 01103 | Springfield, MA | 5.3 mi |
Questions about 01128
What is the ZIP+4 code for 01128?
01128 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 01128, you need to look up a specific street address to get them.
What city is 01128?
01128 is assigned to Springfield, Massachusetts, in Hampden 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.