Altamonte Springs is a suburban city in Seminole County, Florida, United States, which had a population of 41,496 at the 2010 census. The city is in the northern suburbs of the Orlando–Kissimmee–Sanford Metropolitan Statistical Area, which the United States Census Bureau estimated had a population of 2,054,574 in 2008.Dr. Washington Kilmer of Cincinnati was the first to settle into the area circa 1870, and he named the area Altamont after Altamont, New York, an area near his childhood home. In 1882, the Altamonte Land, Hotel and Navigation Company, founded by Thomas C. Simpson and four other Massachusetts businessmen, gave the area its present name: Altamonte Springs. The company developed the core community along Altamonte Avenue between Maitland and Longwood Avenues. On November 11, 1920, the residents of Altamonte Springs voted 38 to 7 in favor of incorporation.