Glade Park is an unincorporated community and a U.S. Post Office located in Mesa County, Colorado, United States. The Glade Park Post Office has the ZIP Code 81523. Glade Park is 16 miles west of downtown Grand Junction, Colorado, the largest city on Colorado's western slope. To access Glade Park, one must either drive up Little Park Road, or driv…Glade Park is an unincorporated community and a U.S. Post Office located in Mesa County, Colorado, United States. The Glade Park Post Office has the ZIP Code 81523. Glade Park is 16 miles west of downtown Grand Junction, Colorado, the largest city on Colorado's western slope. To access Glade Park, one must either drive up Little Park Road, or drive up the Rim Rock Drive in Colorado National Monument, gaining approximately 2,500 feet elevation over 4 miles of hairpin curves. The views on the drive are spectacular, encompassing red sandstone canyons and sheer rock faces. The elevation of Glade Park is approximately 7,000 feet. Due to the elevation, the temperature in Glade Park is typically ~10 °F cooler than in Grand Junction, though in winter temperatures can be significantly warmer than in Grand Junction if an inversion layer is present in the Grand Valley below.