Arco, County seat in Butte County, Idaho, United States.
Located along the Big Lost River at 1623 meters elevation, Arco functions as a gateway between the Snake River Plain and Lost River Range.
The community originated as a trading post established by rancher Louis Arco in 1862, evolving into an important regional center in Idaho.
Number Hill displays graduation years painted by local students since 1920, demonstrating the continuous connection between generations in this small community.
The Idaho National Laboratory, situated east of Arco, provides employment opportunities while contributing to the economic development of the region.
On July 17, 1955, Arco became the first city worldwide to receive electrical power generated exclusively from nuclear energy.
Location: Butte County
Elevation above the sea: 1,623 m
GPS coordinates: 43.63444,-113.30111
Latest update: May 27, 2025 08:58
Craters of the Moon National Monument and Preserve
28.6 km
Experimental Breeder Reactor I
27.5 km
Borah Peak
68 km
Hell's Half Acre Lava Field
70.3 km
Big Southern Butte
34.3 km
Hyndman Peak
68 km
Birch Creek Charcoal Kilns
76 km
Mackay Reservoir
46.4 km
Homer Pound House
82.5 km
Sawtooth Botanical Garden
84.5 km
USGS Peak
47.8 km
Gimlet Pegram Truss Railroad Bridge
84.3 km
Mount Breitenbach
56.5 km
Standhope Peak
60.6 km
Cobb Peak
67.3 km
Donaldson Peak
57.6 km
Old Hyndman Peak
66.7 km
Cold Springs Pegram Truss Railroad Bridge
84.4 km
Hailey Masonic Lodge
82.5 km
Bellevue Historic District
79.5 km
Mackay Methodist Episcopal Church
39.7 km
Eben S. and Elizabeth S. Chase House
82.5 km
Fox–Worswick House
82.5 km
Blaine County Courthouse
82.5 km
Craters of the Moon National Monument Mission 66 Historic District
28.5 km
Bigwood Golf Course
86.2 km
Little Wood River Reservoir
63.1 km
Craters of the Moon
28.8 kmReviews
Visited this place? Tap the stars to rate it and share your experience / photos with the community! Try now! You can cancel it anytime.
Discover hidden gems everywhere you go!
From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.
A unique approach to discovering new places❞
— Le Figaro
All the places worth exploring❞
— France Info
A tailor-made excursion in just a few clicks❞
— 20 Minutes