ZIP codes in Grant County
19 ZIPs touch Grant County, New Mexico. The blue dashed line is the county border; orange ZIPs reach into it.
19
ZIP codes
3
cross the county line
30,916
people in these ZIPs
33
counties in NM
Most people
Grant County ZIP list
More counties in New Mexico
- Cibola County17
- Colfax County10
- Curry County9
- De Baca County3
- Doña Ana County30
- Eddy County11
- Guadalupe County7
- Harding County7
- Hidalgo County5
- Lea County13
- Lincoln County19
- Los Alamos County3
Questions people actually ask
How many ZIP codes are in Grant County, New Mexico?
19 ZIP codes reach into Grant County, including 2 PO Box or single-address ZIPs placed by the town they serve. 3 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Grant County has the most people?
88061 (Silver City) has about 17,464 residents, the most of any ZIP touching Grant County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Grant County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Grant County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from