ZIP Codes of Juab County, UT

Population & People
Population & People
Total Population
12,456
Household Income
Household Income
Median Income
$92,706
Housing
Housing
Total Housing Units
3,993
Business & Economy
Business & Economy
Total Businesses
284
Employment
Employment
Employment Rate
67.72%
Education
Education
Bachelor's Degree+
20.05%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:4 ZIP Codes (2 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:385 / 435 / 801
Timezone:Mountain (GMT -07:00)
Local Time:2:14:05 PM
Population:12,456 [See All]
FIPS:49023
CBSA:Provo-Orem-Lehi, UT
Land Area:775 sq mi
Water Area:3 sq mi
Coordinates:39.7315, -111.9061
Quick Link:
https://www.zip-codes.com/county/ut-juab.asp
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Utah's #20 most populous county
12,456 residents across 4 ZIPs — #20 of 29 Utah counties.

Standout ZIPs in this County


Most Populous
Nephi · 7,385 people
59.3% of county total
Highest Income
Mona · $111,250 median
1.2× county average
Largest Land Area
Nephi · 276.6 sq mi
Spans the most ground
Fastest Growth
Nephi · 28.8% (10-yr)
5,733 → 7,385 residents
Most Educated
Nephi · 21.8% bachelor's+
986 of 4,527 adults 25+

Things worth knowing about Juab County


12,456 residents live across 4 ZIPs covering 775 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 10,246 to 12,456 from 2014 to 2024 — a +21.6% change. 3 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 84645 (Mona, $111,250 median) and poorest ZIP 84628 (Eureka, $69,167) are 17.6 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.7× across this county — from $295,400 in 84628 (Eureka) to $510,700 in 84645 (Mona).

Density varies across the county — from 5 people/sq mi in 84628 (Eureka) to 27 in 84648 (Nephi).

Educational attainment ranges from 12.0% bachelor's+ in 84639 (Levan) to 21.8% in 84648 (Nephi) — the breadth of educational profiles across the area.

Within Utah, this is the #20 most populous of 29 counties and ranks #10 for median household income with the #7 fastest decade growth .

Weighted by population, the typical household earns about $103,605 across the county — reflecting what a typical resident sees, not a simple ZIP average.

20.1% of adults age 25+ hold a bachelor's degree or higher (1,418 of 7,071 reporting).

2 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Juab County


Where the growth lives

Juab County grew 21.6% over the past decade — concentrated in 2 high-growth ZIPs:

Eureka
+29.2%
674 → 871 residents
Nephi
+28.8%
5,733 → 7,385 residents

Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
775
square miles
Avg density
16.1
people per sq mi
Population
12,456
across 4 ZIPs
Nephi
276.6 sq mi
7,385 residents
Eureka
177.9 sq mi
871 residents
Levan
172.6 sq mi
884 residents

All ZIP Codes in Juab County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
84648NephiStandard7,385$106,604276.628.8%
84645MonaStandard3,316$111,250147.613.1%
84639LevanPO Box884$83,802172.6-2.4%
84628EurekaPO Box871$69,167177.929.2%

Adjacent & Nearby Counties