Arco is a city in Butte County, Idaho, United States. The population was 879 as of the 2020 United States census, down from 995 at the 2010 census. Arco is the county seat and largest city in Butte County.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Town numbers

ZIP code83213

Area code208

Living in Arco

Housing in Arco

$170K Median sale price · Redfin, May 2026

The median sale price was $170,000 in May 2026.

Zillow Home Value Index · Redfin Data CenterHousing market →

Work & commute in Arco

Full picture →

About one in 4 of Arco’s working residents works in town. The top destinations are Idaho Falls (22%), Boise City (4%) and Mackay (2%). Half commute less than 63 miles.

Idaho Falls

22%

Boise City

Mackay

Challis

27%Work in townlive and work in Arco 63 miWhere do people commute?the commute map 435Jobs based herebalanced

Census LEHD 2023 · ACSWork & commute in Arco →

Health in Arco

Compared with Idaho

1better than ID·17worse

of 32 measures CDC estimates. The other 14 are too close to call.

Conditions 8▼ 4 close Habits 2▼ 2 close Care 1▲ 1▼ 5 close Mind 2▼ 3 close Everyday needs 4▼ 0 close

BetterToo close to callWorse

What stands out

75.7%More adults treating high blood pressureID 70.5% · better 11.6%More adults with COPDID 6.6% · worse

Care nearby

Lost Rivers Medical CenterArco · 0.6 mi · ER · rural critical access

Fhs Bellevue Co. Response OfficeBellevue · 49.4 mi · sliding-scale fees

Primary careShortage · county-wide

DentalShortage · county-wide

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Arco · CMS · HRSAHealth in Arco →

Natural hazards in Arco

Moderate

Expected storm and flood damage is higher than in 52% of U.S. communities.

🌊 Inland flooding🥶 Cold waves🏔️ Avalanches

0Does Arco flood?no paid flood claims on record NoneDisasters that paid out hereof 4 declared for Butte County

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Arco →

Climate in Arco

Full climate →

Arco has cold winters and warm summers, with very little rain. A typical July afternoon reaches 86°, a January night drops to 7°, and about 24 inches of snow falls in a normal winter.

31° / 9°Winter

55° / 30°Spring

82° / 48°Summer

58° / 29°Fall

How much snow does Arco get?About 24 inches a winter.Rain & snow →When is the first frost?Around Sep 22, with the last in spring around May 22.Frost dates →Is it warmer than it used to be?+1.1° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Arco →

Schools in Arco

All Arco schools →

B⁺

School Grade B+

The public schools Arco’s kids attend outperform 65% of Idaho’s districts on state tests. Among towns with similar incomes, they rank near the top.

DistrictBUTTE COUNTY JOINT DISTRICTSchools2

Arco Elementary School B+Elementary · Grades PK–6 · 186 students Butte County Middle/High School BHigh · Grades 7–12 · 186 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results, graded within ID. Ratings are from neighbors.