Population: 552,043
Share of population age 60+: 24%
Median monthly mortgage cost: $1,204
Median monthly rent: $802
Hospital: CHI Memorial Hospital

Chattanooga calls itself the “Gig City” because in 2010 it was the first city in the United States to offer gigabit internet speed, and it continues to invest in high-speed internet. The speedy fiber optic network has attracted tech companies, venture capital firms and entrepreneurs who need broadband services for their work but are looking for a more affordable cost of living. The "Gig” also presents opportunities for retirees who want to work part time online or launch an internet business in a city that doesn’t cost a fortune, while also enjoying the nearby mountains and Tennessee River.

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*Statistics and pictures provided by: U.S. News & World Report