ZIP Code 77982 — Port O'connor, TX
77982 is a standard (street delivery) ZIP code serving Port O'connor, Texas, in Calhoun 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 77982 at a glance
| ZIP code | 77982 |
|---|---|
| Primary city | Port O'connor |
| State | Texas (TX) |
| County | Calhoun FIPS 48057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 620 |
| Coordinates | 28.449030, -96.486570 |
How ZIP+4 works in 77982
The four digits after the hyphen encode a delivery segment inside 77982. 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 77982 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 77982.
| ZIP | City | Distance |
|---|---|---|
| 77983 | Seadrift, TX | 10 mi |
| 77979 | Port Lavaca, TX | 12.7 mi |
| 77978 | Point Comfort, TX | 18.1 mi |
| 77465 | Palacios, TX | 24.1 mi |
| 77991 | Vanderbilt, TX | 24.2 mi |
| 77969 | La Salle, TX | 24.6 mi |
| 77977 | Placedo, TX | 24.9 mi |
| 77428 | Collegeport, TX | 25.3 mi |
| 77971 | Lolita, TX | 26.4 mi |
| 77990 | Tivoli, TX | 27.3 mi |
| 77970 | La Ward, TX | 27.5 mi |
| 77950 | Austwell, TX | 28 mi |
Questions about 77982
What is the ZIP+4 code for 77982?
77982 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 77982, you need to look up a specific street address to get them.
What city is 77982?
77982 is assigned to Port O'connor, Texas, in Calhoun 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.