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ZIP codes in Salt Lake County

72 ZIPs touch Salt Lake County, Utah. The blue dashed line is the county border; orange ZIPs reach into it.

72

ZIP codes

1

cross the county line

1,199,921

people in these ZIPs

29

counties in UT

Most people

← All Utah ZIP codes

Salt Lake County ZIP list

More counties in Utah

All 29 counties in Utah

Questions people actually ask

How many ZIP codes are in Salt Lake County, Utah?

72 ZIP codes reach into Salt Lake County, including 30 PO Box or single-address ZIPs placed by the town they serve. 1 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Salt Lake County has the most people?

84096 (Herriman) has about 74,603 residents, the most of any ZIP touching Salt Lake County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Salt Lake 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 Salt Lake 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