ZIP Code 03103 — Manchester, NH
03103 is a standard (street delivery) ZIP code serving Manchester, New Hampshire, in Hillsborough 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 03103 at a glance
| ZIP code | 03103 |
|---|---|
| Primary city | Manchester |
| State | New Hampshire (NH) |
| County | Hillsborough FIPS 33011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 37,775 |
| Coordinates | 42.955360, -71.444630 |
How ZIP+4 works in 03103
The four digits after the hyphen encode a delivery segment inside 03103. 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 03103 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 Manchester
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 03103.
| ZIP | City | Distance |
|---|---|---|
| 03109 | Manchester, NH | 2.3 mi |
| 03101 | Manchester, NH | 2.5 mi |
| 03104 | Manchester, NH | 3.7 mi |
| 03102 | Manchester, NH | 4.3 mi |
| 03110 | Bedford, NH | 4.4 mi |
| 03032 | Auburn, NH | 5.6 mi |
| 03053 | Londonderry, NH | 6 mi |
| 03045 | Goffstown, NH | 7.8 mi |
| 03052 | Litchfield, NH | 7.8 mi |
| 03054 | Merrimack, NH | 7.9 mi |
| 03106 | Hooksett, NH | 8 mi |
| 03038 | Derry, NH | 9.5 mi |
Questions about 03103
What is the ZIP+4 code for 03103?
03103 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 03103, you need to look up a specific street address to get them.
What city is 03103?
03103 is assigned to Manchester, New Hampshire, in Hillsborough 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?
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