ZIP Code 52228 — Fairfax, IA
52228 is a standard (street delivery) ZIP code serving Fairfax, Iowa, in Linn 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 52228 at a glance
| ZIP code | 52228 |
|---|---|
| Primary city | Fairfax |
| State | Iowa (IA) |
| County | Linn FIPS 19113 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,802 |
| Coordinates | 41.902820, -91.791320 |
How ZIP+4 works in 52228
The four digits after the hyphen encode a delivery segment inside 52228. 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 52228 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 52228.
| ZIP | City | Distance |
|---|---|---|
| 52351 | Walford, IA | 3 mi |
| 52404 | Cedar Rapids, IA | 5.3 mi |
| 52318 | Norway, IA | 5.5 mi |
| 52405 | Cedar Rapids, IA | 6.2 mi |
| 52338 | Swisher, IA | 6.6 mi |
| 52206 | Atkins, IA | 7.9 mi |
| 52203 | Amana, IA | 8.2 mi |
| 52401 | Cedar Rapids, IA | 8.5 mi |
| 52307 | Middle Amana, IA | 9.6 mi |
| 52354 | Watkins, IA | 10.2 mi |
| 52402 | Cedar Rapids, IA | 10.7 mi |
| 52411 | Cedar Rapids, IA | 10.7 mi |
Questions about 52228
What is the ZIP+4 code for 52228?
52228 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 52228, you need to look up a specific street address to get them.
What city is 52228?
52228 is assigned to Fairfax, Iowa, in Linn 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.