ZIP Code 77866 — Millican, TX
77866 is a standard (street delivery) ZIP code serving Millican, Texas, in Brazos 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 77866 at a glance
| ZIP code | 77866 |
|---|---|
| Primary city | Millican |
| State | Texas (TX) |
| County | Brazos FIPS 48041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Coordinates | 30.493560, -96.210340 |
How ZIP+4 works in 77866
The four digits after the hyphen encode a delivery segment inside 77866. 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 77866 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 77866.
| ZIP | City | Distance |
|---|---|---|
| 77845 | College Station, TX | 6.1 mi |
| 77840 | College Station, TX | 10.6 mi |
| 77843 | College Station, TX | 11.4 mi |
| 77830 | Anderson, TX | 12.2 mi |
| 77868 | Navasota, TX | 12.5 mi |
| 77802 | Bryan, TX | 13.3 mi |
| 77801 | Bryan, TX | 13.6 mi |
| 77878 | Snook, TX | 14.4 mi |
| 77880 | Washington, TX | 14.6 mi |
| 77803 | Bryan, TX | 16.5 mi |
| 77875 | Roans Prairie, TX | 16.8 mi |
| 77861 | Iola, TX | 17.3 mi |
Questions about 77866
What is the ZIP+4 code for 77866?
77866 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 77866, you need to look up a specific street address to get them.
What city is 77866?
77866 is assigned to Millican, Texas, in Brazos 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.