where is loma colorado?
Loma, Colorado. Loma is an unincorporated community and a U.S. Post Office located northwest of Grand Junction in Mesa County, Colorado, United States. The Loma Post Office has the ZIP Code 81524. In July 2015, the CDOT installed a signal light-Loma's first-on intersection of US Highway 139 (13 Road) and Highway 6 & 50.