[5] Boulder, quite isolated until the Civilian Conservation Corps built a road from Escalante, did not get electric power until 1947.

The town marks the western terminus of Burr Trail, a mostly paved road that runs eastward through spectacular red rock country to the Waterpocket Fold in Capitol Reef National Park.

According to the United States Census Bureau, the town has a total area of 20.9 square miles (54.2 km2), all land.

The American Discovery Trail bicycle alternate route runs through Boulder.

27.7% of all households were made up of individuals, and 9.2% had someone living alone who was 65 years of age or older.