ZIP Code 74820 — Ada, OK
74820 is a standard (street delivery) ZIP code serving Ada, Oklahoma, in Pontotoc 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 74820 at a glance
| ZIP code | 74820 |
|---|---|
| Primary city | Ada |
| State | Oklahoma (OK) |
| County | Pontotoc FIPS 40123 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 31,943 |
| Coordinates | 34.806910, -96.713480 |
How ZIP+4 works in 74820
The four digits after the hyphen encode a delivery segment inside 74820. 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 74820 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 74820.
| ZIP | City | Distance |
|---|---|---|
| 74844 | Francis, OK | 8.5 mi |
| 74843 | Fitzhugh, OK | 10.3 mi |
| 74849 | Konawa, OK | 12.3 mi |
| 74842 | Fittstown, OK | 14.3 mi |
| 74867 | Sasakwa, OK | 14.3 mi |
| 74865 | Roff, OK | 14.9 mi |
| 74872 | Stratford, OK | 15.2 mi |
| 74871 | Stonewall, OK | 17 mi |
| 74825 | Allen, OK | 17.6 mi |
| 74826 | Asher, OK | 18.2 mi |
| 74866 | Saint Louis, OK | 19.4 mi |
| 74831 | Byars, OK | 19.7 mi |
Questions about 74820
What is the ZIP+4 code for 74820?
74820 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 74820, you need to look up a specific street address to get them.
What city is 74820?
74820 is assigned to Ada, Oklahoma, in Pontotoc 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.