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Related Historical Markers

San Luis, Colorado

By Cosmos Mariner, July 12, 2025

Oldest Town in Colorado Marker

SHOWN IN SOURCE-SPECIFIED ORDER

1 ► Colorado, Costilla County, San Luis — Oldest Town in Colorado —

On Main Street (State Highway 159) just north of 6th Street, on the right when traveling north.

2 ► Colorado, Costilla County, San Luis — Commemorating the San Luis Peoples Ditch —

On Main Street (State Highway 159) at 1st Street, on the right when traveling north on Main Street.

3 ► Colorado, Costilla County, San Luis — Costilla County Courthouse — Erected in 1883 —

On Main Street (State Highway 159) just south of Archie Street, on the left when traveling south.

4 ► Colorado, Costilla County, San Luis — R & R Market — Colo's Oldest — Estab 1857 —

On Main Street (State Highway 159) just south of 4th Street, on the right when traveling south.

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Nov. 11, 2026