28638 ZIP Code: Hudson, North Carolina
ZIP code 28638 covers Hudson, North Carolina. It sits in Caldwell 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 | 28638 |
|---|---|
| Place | Hudson |
| State | North Carolina (NC) |
| County or equivalent | Caldwell County |
| Phone area codes in North Carolina | 9 |
| Country | United States |
ZIP codes near 28638
- 28630 Granite Fallsabout 4 miles
- 28667 Rhodhissabout 5 miles
- 28633 Lenoirabout 6 miles
- 28645 Lenoirabout 6 miles
- 28671 Rutherford Collegeabout 7 miles
- 28612 Connelly Springsabout 7 miles
- 28666 Icardabout 8 miles
- 28690 Valdeseabout 8 miles
Distances are straight-line, between the approximate centres of each delivery area.
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Frequently asked questions
Where is ZIP code 28638?
ZIP code 28638 is in Hudson, North Carolina, in Caldwell 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 28638 in?
28638 is in Caldwell County, North Carolina. 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 28638?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. North Carolina uses 9 geographic area codes: 252, 336, 704, 743, 828, 910, 919, 980 and 984.
Is 28638 a real ZIP code?
Yes. 28638 appears in the GeoNames postal-code dataset as an active US code assigned to Hudson, North Carolina. 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.