ZIP codes in Union County
13 ZIPs touch Union County, North Carolina. The blue dashed line is the county border; orange ZIPs reach into it.
13
ZIP codes
6
cross the county line
370,306
people in these ZIPs
100
counties in NC
Most people
Union County ZIP list
More counties in North Carolina
- Stanly County13
- Stokes County16
- Surry County14
- Swain County5
- Transylvania County10
- Tyrrell County3
- Vance County9
- Wake County69
- Warren County11
- Washington County4
- Watauga County12
- Wayne County16
Questions people actually ask
How many ZIP codes are in Union County, North Carolina?
13 ZIP codes reach into Union County, including 1 PO Box or single-address ZIPs placed by the town they serve. 6 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Union County has the most people?
28173 (Waxhaw) has about 65,274 residents, the most of any ZIP touching Union County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Union 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 Union 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