ZIP Code 52573 — Mount Sterling, IA
52573 is a standard (street delivery) ZIP code serving Mount Sterling, Iowa, in Van Buren 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 52573 at a glance
| ZIP code | 52573 |
|---|---|
| Primary city | Mount Sterling |
| State | Iowa (IA) |
| County | Van Buren FIPS 19177 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 148 |
| Coordinates | 40.623780, -91.929790 |
How ZIP+4 works in 52573
The four digits after the hyphen encode a delivery segment inside 52573. 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 52573 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 52573.
| ZIP | City | Distance |
|---|---|---|
| 52542 | Cantril, IA | 6.4 mi |
| 52565 | Keosauqua, IA | 8.1 mi |
| 52620 | Bonaparte, IA | 8.9 mi |
| 63432 | Arbela, MO | 9.2 mi |
| 63453 | Luray, MO | 9.5 mi |
| 52626 | Farmington, IA | 10.9 mi |
| 52570 | Milton, IA | 12.2 mi |
| 63465 | Revere, MO | 14.4 mi |
| 52551 | Douds, IA | 16.3 mi |
| 63555 | Memphis, MO | 16.5 mi |
| 52535 | Birmingham, IA | 16.8 mi |
| 52584 | Pulaski, IA | 16.9 mi |
Questions about 52573
What is the ZIP+4 code for 52573?
52573 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 52573, you need to look up a specific street address to get them.
What city is 52573?
52573 is assigned to Mount Sterling, Iowa, in Van Buren 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.