ZIP Code 52302 — Marion, IA
52302 is a standard (street delivery) ZIP code serving Marion, 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 52302 at a glance
| ZIP code | 52302 |
|---|---|
| Primary city | Marion |
| State | Iowa (IA) |
| County | Linn FIPS 19113 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 42,706 |
| Coordinates | 42.065600, -91.570910 |
How ZIP+4 works in 52302
The four digits after the hyphen encode a delivery segment inside 52302. 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 52302 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 52302.
| ZIP | City | Distance |
|---|---|---|
| 52328 | Robins, IA | 4.9 mi |
| 52402 | Cedar Rapids, IA | 5.4 mi |
| 52233 | Hiawatha, IA | 6.1 mi |
| 52403 | Cedar Rapids, IA | 6.7 mi |
| 52336 | Springville, IA | 6.7 mi |
| 52202 | Alburnett, IA | 7.3 mi |
| 52401 | Cedar Rapids, IA | 7.7 mi |
| 52411 | Cedar Rapids, IA | 8.1 mi |
| 52341 | Toddville, IA | 8.8 mi |
| 52214 | Central City, IA | 9.2 mi |
| 52405 | Cedar Rapids, IA | 10.6 mi |
| 52314 | Mount Vernon, IA | 11 mi |
Questions about 52302
What is the ZIP+4 code for 52302?
52302 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 52302, you need to look up a specific street address to get them.
What city is 52302?
52302 is assigned to Marion, 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.