53503 ZIP Code: Arena, Wisconsin
ZIP code 53503 covers Arena, Wisconsin. It sits in Iowa County. A ZIP code is a US Postal Service mail route, not a boundary on a map, so it describes where post is delivered rather than an administrative area.
| ZIP code | 53503 |
|---|---|
| Place | Arena |
| State | Wisconsin (WI) |
| County or equivalent | Iowa County |
| Phone area codes in Wisconsin | 7 |
| Country | United States |
ZIP codes near 53503
- 53588 Spring Greenabout 7 miles
- 53560 Mazomanieabout 9 miles
- 53507 Barneveldabout 10 miles
- 53515 Black Earthabout 10 miles
- 53582 Ridgewayabout 10 miles
- 53577 Plainabout 11 miles
- 53517 Blue Moundsabout 11 miles
- 53583 Sauk Cityabout 13 miles
Distances are straight-line, between the approximate centres of each delivery area.
Got a call from a Wisconsin number?
Enter the full 10-digit number to see who it is listed to, where it is registered, and whether it is a mobile, landline or VoIP line.
Frequently asked questions
Where is ZIP code 53503?
ZIP code 53503 is in Arena, Wisconsin, in Iowa County. ZIP codes are mail delivery routes rather than mapped regions, so the code identifies a set of addresses the Postal Service serves together, not a district with fixed borders.
What county is 53503 in?
53503 is in Iowa County, Wisconsin. A single ZIP code can straddle a county line, because mail routes were drawn for delivery efficiency and take no notice of county boundaries, so the county shown is the one the code is primarily associated with.
What area code goes with ZIP code 53503?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. Wisconsin uses 7 geographic area codes: 262, 274, 414, 534, 608, 715 and 920.
Is 53503 a real ZIP code?
Yes. 53503 appears in the GeoNames postal-code dataset as an active US code assigned to Arena, Wisconsin. Codes that have been retired or never issued do not appear, which is why entering one on this site returns a not-found page rather than a blank record.
Why do ZIP code boundaries look odd on maps?
Because they are not boundaries. A ZIP code is a collection of mail routes, and a route is a line a carrier walks or drives, not an area. Any ZIP code map you have seen is somebody's approximation drawn around the addresses in a code, which is also why two ZIP code maps rarely agree with each other.
Can two addresses in the same ZIP code be in different cities?
Yes, routinely. The Postal Service assigns a preferred city name to each code for addressing purposes, and that name often covers several neighbouring towns, unincorporated areas or a whole postal district. The place shown here is the one the source names for the code, not a claim that every address in it is inside that town's limits.
ZIP code, place, county and location data from GeoNames, used under CC BY 4.0, extracted 2026-08-22. ZIP codes are Postal Service delivery routes, not administrative areas, so a code can cross city and county lines and the place name shown is the one the source records for the code. Coordinates are an approximate centre of the delivery area, not a precise location. Population and time zone are not shown because the source does not publish them.