Denver Public Schools (DPS) is the public school system in Denver. It educates approximately 92,000 students in 92 elementary schools, 18 K-8 schools, 34 middle schools, 44 high schools, and 19 charter schools. The first school of what is now DPS was a log cabin that opened in 1859 on the corner of 12th Street between Market and Larimer Streets. The district boundaries are coextensive with the city limits. The Cherry Creek School District serves some areas with Denver postal addresses that are outside the city limits.
Denver is in the center of the Front Range Urban Corridor, between the Rocky Mountains to the west and the High Plains to the east. Denver's topography consists of plains in the city center with hilly areas to the north, west and south. According to the United States Census Bureau the city has a total area of 155 square miles (401 km2), of which 153 square miles (396 km2) is land and 1.6 square miles (4.1 km2) (1.1%) is water. The City and County of Denver is surrounded by only three other counties: Adams County to the north and east, Arapahoe County to the south and east, and Jefferson County to the west.