Mesa County Courthouse (first location), Grand Junction, Colorado Sixth and Main Street Grand Junction Mesa Colorado USA https://www.google.com/maps/dir/Main+St,+Grand+Junction,+CO/S+6th+St,+Grand+Junction,+CO+81501/@39.0653193,-108.5624171,17z/data Google Map link for Main and Sixth Street, Grand Junction, Colorado The Mesa County Courthouse was located at Sixth and Main Street in Grand Junction, where Main Street Bagels is now. This was also the location of the first Grand Junction Town Company building, built in the early years of the city [1881-1883]. yes yes