ZIP Code 10451 — Bronx, NY
10451 is a standard (street delivery) ZIP code serving Bronx, New York, in Bronx 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 10451 at a glance
| ZIP code | 10451 |
|---|---|
| Primary city | Bronx |
| State | New York (NY) |
| County | Bronx FIPS 36005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 50,942 |
| Coordinates | 40.820970, -73.923830 |
How ZIP+4 works in 10451
The four digits after the hyphen encode a delivery segment inside 10451. 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 10451 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 Bronx
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 10451.
| ZIP | City | Distance |
|---|---|---|
| 10039 | New York, NY | 0.8 mi |
| 10037 | New York, NY | 0.9 mi |
| 10455 | Bronx, NY | 0.9 mi |
| 10030 | New York, NY | 1 mi |
| 10456 | Bronx, NY | 1.1 mi |
| 10454 | Bronx, NY | 1.1 mi |
| 10452 | Bronx, NY | 1.2 mi |
| 10031 | New York, NY | 1.4 mi |
| 10032 | New York, NY | 1.6 mi |
| 10459 | Bronx, NY | 1.6 mi |
| 10027 | New York, NY | 1.7 mi |
| 10035 | New York, NY | 1.8 mi |
Questions about 10451
What is the ZIP+4 code for 10451?
10451 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 10451, you need to look up a specific street address to get them.
What city is 10451?
10451 is assigned to Bronx, New York, in Bronx 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.