ZIP Code 06415 — Colchester, CT
06415 is a standard (street delivery) ZIP code serving Colchester, Connecticut, in Southeastern 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 06415 at a glance
| ZIP code | 06415 |
|---|---|
| Primary city | Colchester |
| State | Connecticut (CT) |
| County | Southeastern Connecticut FIPS 09180 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 16,038 |
| Coordinates | 41.555630, -72.346940 |
How ZIP+4 works in 06415
The four digits after the hyphen encode a delivery segment inside 06415. 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 06415 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 06415.
| ZIP | City | Distance |
|---|---|---|
| 06231 | Amston, CT | 4.9 mi |
| 06469 | Moodus, CT | 6.2 mi |
| 06420 | Salem, CT | 6.4 mi |
| 06423 | East Haddam, CT | 6.5 mi |
| 06249 | Lebanon, CT | 7.6 mi |
| 06447 | Marlborough, CT | 7.7 mi |
| 06336 | Gilman, CT | 8 mi |
| 06424 | East Hampton, CT | 8.1 mi |
| 06334 | Bozrah, CT | 9 mi |
| 06248 | Hebron, CT | 9.4 mi |
| 06237 | Columbia, CT | 9.8 mi |
| 06439 | Hadlyme, CT | 10 mi |
Questions about 06415
What is the ZIP+4 code for 06415?
06415 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 06415, you need to look up a specific street address to get them.
What city is 06415?
06415 is assigned to Colchester, Connecticut, in Southeastern 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.