ZIP Code 52639 — Montrose, IA
52639 is a standard (street delivery) ZIP code serving Montrose, Iowa, in Lee 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 52639 at a glance
| ZIP code | 52639 |
|---|---|
| Primary city | Montrose |
| State | Iowa (IA) |
| County | Lee FIPS 19111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,745 |
| Coordinates | 40.527630, -91.464090 |
How ZIP+4 works in 52639
The four digits after the hyphen encode a delivery segment inside 52639. 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 52639 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 52639.
| ZIP | City | Distance |
|---|---|---|
| 52619 | Argyle, IA | 5.3 mi |
| 52632 | Keokuk, IA | 6.1 mi |
| 62354 | Nauvoo, IL | 6.9 mi |
| 63430 | Alexandria, MO | 10.3 mi |
| 63472 | Wayland, MO | 10.3 mi |
| 62341 | Hamilton, IL | 10.9 mi |
| 52627 | Fort Madison, IA | 10.9 mi |
| 52625 | Donnellson, IA | 11.1 mi |
| 62358 | Niota, IL | 11.4 mi |
| 63465 | Revere, MO | 11.8 mi |
| 62334 | Elvaston, IL | 14.5 mi |
| 52656 | West Point, IA | 14.5 mi |
Questions about 52639
What is the ZIP+4 code for 52639?
52639 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 52639, you need to look up a specific street address to get them.
What city is 52639?
52639 is assigned to Montrose, Iowa, in Lee 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.