Arapahoe County was established November 1, 1861, named for the Arapaho Indian tribe. Littleton is the county seat.
County Demographics: population was 391,511 in 1990 and 482,089 in 1999; location is 39°39'N 104°20'W; land area is 803.17 square miles (514,027 acres); water area is 2.30 square miles (1,473 acres). Source: US Census Bureau.
Please submit only sites for this county. Appropriate sites include those such as county offices, clerks, courthouses, commissioners, departments or transportation facilities. Please do not submit sites relevant to a specific city within the county. City sites should be submitted to the appropriate locality category.