what county is altamonte springs
photo by Leonidas Bratini. 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 OrlandoâKissimmeeâSanford Metropolitan Statistical Area, which the United States Census Bureau estimated had a population of 2,054,574 in 2008.