ZIP Code 52056 — Luxemburg, IA
52056 is a standard (street delivery) ZIP code serving Luxemburg, Iowa, in Dubuque 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 52056 at a glance
| ZIP code | 52056 |
|---|---|
| Primary city | Luxemburg |
| State | Iowa (IA) |
| County | Dubuque FIPS 19061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 229 |
| Coordinates | 42.604010, -91.072570 |
How ZIP+4 works in 52056
The four digits after the hyphen encode a delivery segment inside 52056. 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 52056 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 52056.
| ZIP | City | Distance |
|---|---|---|
| 52065 | New Vienna, IA | 2.1 mi |
| 52053 | Holy Cross, IA | 5.5 mi |
| 52035 | Colesburg, IA | 7 mi |
| 52040 | Dyersville, IA | 7.2 mi |
| 52066 | North Buena Vista, IA | 8.1 mi |
| 52052 | Guttenberg, IA | 9.8 mi |
| 52041 | Earlville, IA | 11.5 mi |
| 52046 | Farley, IA | 11.7 mi |
| 52039 | Durango, IA | 11.8 mi |
| 53806 | Cassville, WI | 11.8 mi |
| 52045 | Epworth, IA | 12.6 mi |
| 52073 | Sherrill, IA | 12.9 mi |
Questions about 52056
What is the ZIP+4 code for 52056?
52056 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 52056, you need to look up a specific street address to get them.
What city is 52056?
52056 is assigned to Luxemburg, Iowa, in Dubuque 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.