81525 ZIP Code: Mack, Colorado
ZIP code 81525 covers Mack, Colorado. It sits in Mesa 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 | 81525 |
|---|---|
| Place | Mack |
| State | Colorado (CO) |
| County or equivalent | Mesa County |
| Phone area codes in Colorado | 4 |
| Country | United States |
ZIP codes near 81525
- 81524 Lomaabout 6 miles
- 81521 Fruitaabout 13 miles
- 81523 Glade Parkabout 20 miles
- 81505 Grand Junctionabout 21 miles
- 81506 Grand Junctionabout 23 miles
- 81507 Grand Junctionabout 24 miles
- 81501 Grand Junctionabout 24 miles
- 81504 Grand Junctionabout 26 miles
Distances are straight-line, between the approximate centres of each delivery area.
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Frequently asked questions
Where is ZIP code 81525?
ZIP code 81525 is in Mack, Colorado, in Mesa 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 81525 in?
81525 is in Mesa County, Colorado. 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 81525?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. Colorado uses 4 geographic area codes: 303, 719, 720 and 970.
Is 81525 a real ZIP code?
Yes. 81525 appears in the GeoNames postal-code dataset as an active US code assigned to Mack, Colorado. 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.