ZIP Code 06405 — Branford, CT
06405 is a standard (street delivery) ZIP code serving Branford, Connecticut, in South Central Connecticut 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 06405 at a glance
| ZIP code | 06405 |
|---|---|
| Primary city | Branford |
| State | Connecticut (CT) |
| County | South Central Connecticut FIPS 09170 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 28,217 |
| Coordinates | 41.284050, -72.798090 |
How ZIP+4 works in 06405
The four digits after the hyphen encode a delivery segment inside 06405. 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 06405 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 06405.
| ZIP | City | Distance |
|---|---|---|
| 06471 | North Branford, CT | 3.7 mi |
| 06512 | East Haven, CT | 3.8 mi |
| 06513 | New Haven, CT | 4.4 mi |
| 06437 | Guilford, CT | 6.1 mi |
| 06510 | New Haven, CT | 6.8 mi |
| 06472 | Northford, CT | 7 mi |
| 06511 | New Haven, CT | 7 mi |
| 06517 | Hamden, CT | 7.1 mi |
| 06519 | New Haven, CT | 7.3 mi |
| 06473 | North Haven, CT | 7.3 mi |
| 06516 | West Haven, CT | 8.8 mi |
| 06515 | New Haven, CT | 9.4 mi |
Questions about 06405
What is the ZIP+4 code for 06405?
06405 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 06405, you need to look up a specific street address to get them.
What city is 06405?
06405 is assigned to Branford, Connecticut, in South Central Connecticut 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.