ZIP Code 06811 — Danbury, CT
06811 is a standard (street delivery) ZIP code serving Danbury, Connecticut, in Western 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 06811 at a glance
| ZIP code | 06811 |
|---|---|
| Primary city | Danbury |
| State | Connecticut (CT) |
| County | Western Connecticut FIPS 09190 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 31,228 |
| Coordinates | 41.424270, -73.482100 |
How ZIP+4 works in 06811
The four digits after the hyphen encode a delivery segment inside 06811. 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 06811 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 Danbury
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 06811.
| ZIP | City | Distance |
|---|---|---|
| 06810 | Danbury, CT | 3.5 mi |
| 06812 | New Fairfield, CT | 4.4 mi |
| 06804 | Brookfield, CT | 5.5 mi |
| 10509 | Brewster, NY | 5.8 mi |
| 06801 | Bethel, CT | 5.8 mi |
| 12563 | Patterson, NY | 7.3 mi |
| 06877 | Ridgefield, CT | 8.2 mi |
| 06470 | Newtown, CT | 8.7 mi |
| 10560 | North Salem, NY | 8.9 mi |
| 06752 | Bridgewater, CT | 9.2 mi |
| 06896 | Redding, CT | 9.5 mi |
| 10519 | Croton Falls, NY | 10.7 mi |
Questions about 06811
What is the ZIP+4 code for 06811?
06811 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 06811, you need to look up a specific street address to get them.
What city is 06811?
06811 is assigned to Danbury, Connecticut, in Western 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.