Florissant is an unincorporated town, a post office, and a census-designated place (CDP) located in and governed by Teller County, Colorado, United States. The CDP is a part of the Colorado Springs, CO Metropolitan Statistical Area. The Florissant post office has the ZIP Code 80816. At the United States Census 2020, the population of the Florissant CDP was 128, while the population of the 80816 ZIP Code Tabulation Area was 5,180 including adjacent areas.