Residential delivery area · Utah
ZIP Code 84631: Fillmore, UT
ZIP code 84631 uses the postal name Fillmore, Utah and lies entirely in Millard County (Census 2020 ZIP-county file). About 3,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $67,115 (Census Bureau, ACS 2020-2024). By Census place, 6% of its land lies in Fillmore; 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Fillmore · its only residential ZIP
- County
- Millard County
- Census places
- Fillmore
- House district
- UT-2 119th Congress
- State
- Utah
- Time zone
- Mountain
- Land area
- 126.5 sq mi · 25 people per sq mi
Where is ZIP code 84631?
84631 centers on 38.998°, -112.397° and covers 126.5 square miles of land. It borders 2 ZIP codes: 84636, 84644.
The map draws ZIP code areas only. For the streets inside 84631, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 84631 compare with the rest of Millard County?
| Measure | 84631 | In Millard County | In UT |
|---|---|---|---|
| People (ACS 2020-2024) | 3,196 | 2nd of 12 | 121st of 298 |
| Median household income | $67k | 3rd of 3 | 128th of 145 |
| Median home value | $301k | 1st of 3 | 136th of 153 |
Its median household income is higher than in 42% of U.S. residential ZIP codes, and it is denser than 30% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 84631?
The 2020 Census counted 2,985 people in 84631; the ACS, which samples households over 2020-2024, estimates 3,196. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 3,196
- 2020 Census count
- 2,985
- Households
- 928
- Median age
- 32.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 84631?
Of the 3,196 people the ACS estimates in 84631, 36.2% are under 18 and 15.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (76.1%), then Hispanic or Latino (16.5%).
- Under 1836.2%
- 18 to 6448.1%
- 65 and older15.8%
- White, not Hispanic76.1%
- Hispanic or Latino16.5%
- Asian, not Hispanic6.6%
- Other or two or more0.8%
- Black, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 84631 earn?
Median household income is $67,115 (ACS 2020-2024), the 3rd highest of the 3 ranked ZIP codes in Millard County.
- Median household income
- $67,115±$15,600
- Income per person
- $25,409
- Below the poverty line
- 9.1%
- Unemployed (of the labor force)
- 8.2%
- Adults 25+ with a bachelor's degree
- 25.2%
- Adjusted gross income per tax return, 2022
- $62,3611,390 returns; wages 72% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 84631?
FHFA's house price index for 84631, built from repeat sales and appraisals of the same homes, rose 126% from 2015 to 2025 and rose 73% from 2020 to 2025, and moved +23.4% in 2025.
- Median home value (owners' estimate)
- $301,000
- Median gross rent
- $775
- Homes owned by their occupants
- 77.4%
- Housing units
- 1,065
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 84631?
87 business establishments had a location in this ZIP code in 2023, 14 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade20
- Accommodation and food services15
- Construction8
- Other services (except public administration)8
- Manufacturing6
- Health care and social assistance6
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 84631?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 84636 | Holden | 518 | $73k | 10.3 mi |
| 84644 | Meadow | 275 | $49k | 10.9 mi |
| 84637 | Kanosh | 598 | $80k | 19.7 mi (near) |
| 84656 | Scipio | 466 | $75k | 22.5 mi (near) |
| 84649 | Oak City | 854 | $74k | 24.4 mi (near) |
| 84620 | Aurora | 1,234 | $89k | 25.9 mi (near) |
| 84724 | Elsinore | 1,202 | $49k | 26.0 mi (near) |
| 84739 | Joseph | 592 | $85k | 26.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.