ZIP Code 06039 — Lakeville, CT
06039 is a standard (street delivery) ZIP code serving Lakeville, 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 06039 at a glance
| ZIP code | 06039 |
|---|---|
| Primary city | Lakeville |
| State | Connecticut (CT) |
| County | Northwest Hills FIPS 09160 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,918 |
| Coordinates | 41.950010, -73.443790 |
How ZIP+4 works in 06039
The four digits after the hyphen encode a delivery segment inside 06039. 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 06039 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 06039.
| ZIP | City | Distance |
|---|---|---|
| 06068 | Salisbury, CT | 4.6 mi |
| 12546 | Millerton, NY | 4.7 mi |
| 06031 | Falls Village, CT | 6.5 mi |
| 06069 | Sharon, CT | 6.6 mi |
| 06079 | Taconic, CT | 6.8 mi |
| 06796 | West Cornwall, CT | 7.7 mi |
| 12501 | Amenia, NY | 8.8 mi |
| 06024 | East Canaan, CT | 9.1 mi |
| 12503 | Ancramdale, NY | 9.2 mi |
| 06018 | Canaan, CT | 9.2 mi |
| 01222 | Ashley Falls, MA | 10 mi |
| 06753 | Cornwall, CT | 10 mi |
Questions about 06039
What is the ZIP+4 code for 06039?
06039 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 06039, you need to look up a specific street address to get them.
What city is 06039?
06039 is assigned to Lakeville, 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.