ZIP Code 06018 — Canaan, CT
06018 is a standard (street delivery) ZIP code serving Canaan, Connecticut, in Northwest Hills 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 06018 at a glance
| ZIP code | 06018 |
|---|---|
| Primary city | Canaan |
| State | Connecticut (CT) |
| County | Northwest Hills FIPS 09160 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,587 |
| Coordinates | 42.028720, -73.298070 |
How ZIP+4 works in 06018
The four digits after the hyphen encode a delivery segment inside 06018. 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 06018 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 06018.
| ZIP | City | Distance |
|---|---|---|
| 06024 | East Canaan, CT | 1.6 mi |
| 01222 | Ashley Falls, MA | 2.6 mi |
| 01259 | Southfield, MA | 4.5 mi |
| 06031 | Falls Village, CT | 5 mi |
| 06079 | Taconic, CT | 5.2 mi |
| 01244 | Mill River, MA | 5.7 mi |
| 01257 | Sheffield, MA | 6.1 mi |
| 06068 | Salisbury, CT | 6.4 mi |
| 06058 | Norfolk, CT | 6.5 mi |
| 06039 | Lakeville, CT | 9.2 mi |
| 01258 | South Egremont, MA | 9.7 mi |
| 01255 | Sandisfield, MA | 10.5 mi |
Questions about 06018
What is the ZIP+4 code for 06018?
06018 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 06018, you need to look up a specific street address to get them.
What city is 06018?
06018 is assigned to Canaan, Connecticut, in Northwest Hills 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.