Utah · ZIP lookup
Find your Utah county by ZIP code
ZIP codes are a shortcut for finding the county question. Medicare Advantage service areas are approved county by county, so the useful first step is identifying the county context before comparing anything else.
Where these ZIP/ZCTA rows come from, and what they cannot prove
This table uses a July 22, 2026 ZIP/ZCTA county lookup built from the Census 2020 ZCTA/county relationship file and the 2024 Census ZCTA and county gazetteers. ZCTAs are generalized Census geography, not USPS delivery-route proof. For crossing ZCTAs, the county cell lists each county shown by the Census relationship file; it is not a plan, provider-network, eligibility, or address-level decision.
What does the ZIP/ZCTA source coverage look like for Utah?
ZIP/ZCTA rows in this state
104Rows with official Census county coverage
97Rows that cross more than one county
5Rows without official Census coverage
7Utah has 7 ZIP/ZCTA rows without official Census county coverage, so those rows are listed separately.
Which Utah ZIP rows have a single county match, and which need caution?
| ZIP | County | Cities in that county |
|---|---|---|
| 84003 | ||
| 84004 | ||
| 84005 | ||
| 84010 | ||
| 84015 | ||
| 84020 | ||
| 84025 | ||
| 84037 | ||
| 84040 | ||
| 84041 | ||
| 84042 | ||
| 84043 | ||
| 84044 | ||
| 84045 | ||
| 84047 | ||
| 84054 | ||
| 84057 | ||
| 84058 | ||
| 84059 | ||
| 84060 | ||
| 84062 | ||
| 84065 | ||
| 84067 | ||
| 84070 | ||
| 84074 | ||
| 84075 | ||
| 84087 | ||
| 84088 | ||
| 84094 | ||
| 84095 | ||
| 84096 | ||
| 84097 | ||
| 84098 | ||
| 84101 | ||
| 84102 | ||
| 84103 | ||
| 84104 | ||
| 84105 | ||
| 84106 | ||
| 84107 | ||
| 84108 | ||
| 84109 | ||
| 84111 | ||
| 84112 | ||
| 84113 | ||
| 84115 | ||
| 84116 | ||
| 84117 | ||
| 84118 | ||
| 84119 | ||
| 84120 | ||
| 84121 | ||
| 84123 | ||
| 84124 | ||
| 84128 | ||
| 84129 | ||
| 84302 | ||
| 84318 | ||
| 84319 | ||
| 84321 | ||
| 84326 | ||
| 84327 | ||
| 84332 | ||
| 84333 | ||
| 84335 | ||
| 84337 | ||
| 84341 | ||
| 84341 | ||
| 84401 | ||
| 84403 | ||
| 84404 | ||
| 84405 | ||
| 84414 | ||
| 84601 | ||
| 84602 | ||
| 84604 | ||
| 84606 | ||
| 84651 | ||
| 84653 | ||
| 84655 | ||
| 84660 | ||
| 84663 | ||
| 84664 | ||
| 84720 | ||
| 84721 | ||
| 84725 | ||
| 84737 | ||
| 84738 | ||
| 84745 | ||
| 84765 | ||
| 84770 | ||
| 84774 | ||
| 84780 | ||
| 84781 | ||
| 84783 | ||
| 84784 | ||
| 84790 |
Which Utah ZIP/ZCTA rows need extra caution?
Rows without an official Census county match
The Census source files used for this lookup did not confirm a county relationship for these rows. We list them separately instead of treating them as county-ready.
ZIP/ZCTA 84016 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
ZIP/ZCTA 84127 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
ZIP/ZCTA 84132 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
ZIP/ZCTA 84143 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
ZIP/ZCTA 84148 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
ZIP/ZCTA 84603 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
ZIP/ZCTA 84605 needs separate confirmation
Route ZIP/ZCTA was not present in the official Census 2020 ZCTA/county relationship file or 2024 ZCTA gazetteer.
Which Utah city guides can you browse?
These city links preserve the local navigation available before this ZIP-table redesign.
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