Alamosa County, County in southern Colorado, United States.
Alamosa County encompasses 723 square miles of land with mountains, valleys, and protected wilderness areas in the San Luis Valley region of Colorado.
The Colorado legislature established Alamosa County on March 8, 1913, by separating the northwestern section from Costilla County to form a new administrative district.
The name Alamosa derives from the Spanish word for cottonwood trees, reflecting the natural vegetation that grows along the Rio Grande through the county.
The county maintains several transportation routes including U.S. Highway 160, U.S. Highway 285, and multiple state highways connecting to neighboring regions.
The county contains sections of Great Sand Dunes National Park, which features North America's highest sand formations within its protected natural boundaries.
Location: Colorado
Inception: March 8, 1913
Capital city: Alamosa
Shares border with: Saguache County, Huerfano County, Costilla County, Conejos County, Rio Grande County
Website: http://alamosacounty.org
GPS coordinates: 37.57000,-105.78000
Latest update: March 11, 2025 12:35
Blanca Peak
26 km
Zapata Falls
20.7 km
Rio Grande Scenic Railroad
13.7 km
UFO Watchtower
26.1 km
Fort Garland
34.8 km
Little Bear Peak
25 km
Mount Lindsey
29.6 km
Baca National Wildlife Refuge
33.1 km
Monte Vista National Wildlife Refuge
29.2 km
Alamosa National Wildlife Refuge
18 km
Ellingwood Point
25.4 km
Pike's Stockade
30.9 km
D&RGW 169
13.3 km
San Luis Hills
45 km
Closed Basin Project
9.6 km
Iron Mountain
47 km
San Luis Valley Conservation Area
29.7 km
St. Thomas Episcopal Church
13.5 km
Trujillo Homestead
18.6 km
American National Bank Building
13.6 km
Carnegie Library
32.2 km
Superintendent's Residence, Great Sand Dunes National Monument
28.8 km
San Luis Southern Railway Trestle
29 km
Alamosa County Courthouse
13.6 km
Monte Vista Downtown Historic District
32.4 km
Husung Hardware
13.6 km
Big Spring Creek
25.8 km
Medano Ranch Headquarters
18.3 kmReviews
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