ZIP Code 06705 — Waterbury, CT
06705 is a standard (street delivery) ZIP code serving Waterbury, Connecticut, in Naugatuck Valley 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 06705 at a glance
| ZIP code | 06705 |
|---|---|
| Primary city | Waterbury |
| State | Connecticut (CT) |
| County | Naugatuck Valley FIPS 09140 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 25,266 |
| Coordinates | 41.549000, -72.992000 |
How ZIP+4 works in 06705
The four digits after the hyphen encode a delivery segment inside 06705. 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 06705 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 Waterbury
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 06705.
| ZIP | City | Distance |
|---|---|---|
| 06706 | Waterbury, CT | 2 mi |
| 06702 | Waterbury, CT | 2.8 mi |
| 06710 | Waterbury, CT | 3.1 mi |
| 06704 | Waterbury, CT | 3.3 mi |
| 06444 | Marion, CT | 3.3 mi |
| 06712 | Prospect, CT | 3.5 mi |
| 06716 | Wolcott, CT | 3.7 mi |
| 06708 | Waterbury, CT | 3.9 mi |
| 06467 | Milldale, CT | 4.9 mi |
| 06479 | Plantsville, CT | 5 mi |
| 06770 | Naugatuck, CT | 5.2 mi |
| 06410 | Cheshire, CT | 5.2 mi |
Questions about 06705
What is the ZIP+4 code for 06705?
06705 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 06705, you need to look up a specific street address to get them.
What city is 06705?
06705 is assigned to Waterbury, Connecticut, in Naugatuck Valley 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.