Alamosa County on the map of Colorado as of 2025. Cities, roads, borders and directions in Alamosa County of Colorado.

Alamosa County is found in the southern section of Colorado. This beautiful county is named after the cottonwood trees which grow along the Rio Grande and its tributaries. Alamosa is a Spanish word for a cottonwood grove. The population of Alamosa County exceeds 17 thousand people. The county, formed in 1913, covers an area of 723 square miles. The county seat of Alamosa County is Alamosa. This map shows the borders of Alamosa County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Alamosa County.