Breckenridge, Colorado, is a great place to visit at any time of year. This mountain town was established in 1859 and was incorporated in 1880.Today, it’s the county seat of Summit County and is home to just over 5,000 residents. Historic downtown Breckenridge sits at 9,600 feet of elevation, but many of the vacation homes, resorts, hotels, attractions, and certainly the ski mountain are much higher than that.