Marathon is located in Monroe County. About 9,689 people live here (as of 2020). Between 2010 and 2020, the population grew from 8,297 to 9,689. The region is at 1 meters above sea level. The area covers about 24.0 square kilometers. There are about 601 streets in Marathon. The region was founded in 1999. The postal codes are 33050. The dialing code is 305. Marathon is city in Monroe County, Florida, United States of America. Among other things, Marathon has public Transport, hotels, restaurants, cafés, attractions, museums and schools. More information at
www.ci.marathon.fl.us.