83604 ZIP Code: Bruneau, Idaho
ZIP code 83604 covers Bruneau, Idaho. It sits in Owyhee 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 | 83604 |
|---|---|
| Place | Bruneau |
| State | Idaho (ID) |
| County or equivalent | Owyhee County |
| Phone area codes in Idaho | 2 |
| Country | United States |
ZIP codes near 83604
- 83624 Grand Viewabout 29 miles
- 83627 Hammettabout 30 miles
- 83623 Glenns Ferryabout 36 miles
- 83647 Mountain Homeabout 37 miles
- 83633 King Hillabout 42 miles
- 83650 Murphyabout 43 miles
- 89832 Owyhee, NVabout 48 miles
- 83321 Castlefordabout 50 miles
Distances are straight-line, between the approximate centres of each delivery area.
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Frequently asked questions
Where is ZIP code 83604?
ZIP code 83604 is in Bruneau, Idaho, in Owyhee 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 83604 in?
83604 is in Owyhee County, Idaho. 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 83604?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. Idaho uses 2 geographic area codes: 208 and 986.
Is 83604 a real ZIP code?
Yes. 83604 appears in the GeoNames postal-code dataset as an active US code assigned to Bruneau, Idaho. 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.