ZIP Code 52249 — Keystone, IA
52249 is a standard (street delivery) ZIP code serving Keystone, Iowa, in Benton 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 52249 at a glance
| ZIP code | 52249 |
|---|---|
| Primary city | Keystone |
| State | Iowa (IA) |
| County | Benton FIPS 19011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,060 |
| Coordinates | 42.012020, -92.205170 |
How ZIP+4 works in 52249
The four digits after the hyphen encode a delivery segment inside 52249. 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 52249 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 52249.
| ZIP | City | Distance |
|---|---|---|
| 52225 | Elberon, IA | 6.2 mi |
| 52346 | Van Horne, IA | 6.4 mi |
| 52257 | Luzerne, IA | 6.6 mi |
| 52209 | Blairstown, IA | 9.1 mi |
| 52208 | Belle Plaine, IA | 9.2 mi |
| 52229 | Garrison, IA | 9.4 mi |
| 52348 | Vining, IA | 9.4 mi |
| 52217 | Clutier, IA | 11.5 mi |
| 52224 | Dysart, IA | 11.5 mi |
| 52315 | Newhall, IA | 12.1 mi |
| 52215 | Chelsea, IA | 12.3 mi |
| 52354 | Watkins, IA | 12.8 mi |
Questions about 52249
What is the ZIP+4 code for 52249?
52249 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 52249, you need to look up a specific street address to get them.
What city is 52249?
52249 is assigned to Keystone, Iowa, in Benton 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.