ZIP Code 66429 — Grantville, KS
66429 is a standard (street delivery) ZIP code serving Grantville, Kansas, in Jefferson 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 66429 at a glance
| ZIP code | 66429 |
|---|---|
| Primary city | Grantville |
| State | Kansas (KS) |
| County | Jefferson FIPS 20087 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 379 |
| Coordinates | 39.098900, -95.537250 |
How ZIP+4 works in 66429
The four digits after the hyphen encode a delivery segment inside 66429. 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 66429 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 66429.
| ZIP | City | Distance |
|---|---|---|
| 66616 | Topeka, KS | 5.1 mi |
| 66617 | Topeka, KS | 5.4 mi |
| 66542 | Tecumseh, KS | 6 mi |
| 66607 | Topeka, KS | 6.5 mi |
| 66608 | Topeka, KS | 7.1 mi |
| 66512 | Meriden, KS | 7.2 mi |
| 66050 | Lecompton, KS | 7.7 mi |
| 66605 | Topeka, KS | 7.9 mi |
| 66603 | Topeka, KS | 7.9 mi |
| 66073 | Perry, KS | 8.4 mi |
| 66612 | Topeka, KS | 8.7 mi |
| 66070 | Ozawkie, KS | 9 mi |
Questions about 66429
What is the ZIP+4 code for 66429?
66429 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 66429, you need to look up a specific street address to get them.
What city is 66429?
66429 is assigned to Grantville, Kansas, in Jefferson 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.