The cartoon characters that lived in Frostbite Falls, MN were ones that were on the American animated TV show "The Adventures of Rocky and Bullwinkle and Friends". It was a series that originally aired from November 19, 1959, to June 27, 1964, on the ABC and NBC television networks.

The characters of Rocky and Bullwinkle lived in the town of Frostbite Falls, Minnesota. The population of Frostbite Falls at first was given as 23. During the five seasons that the show was on the air the population went from 23 to 4001.

Rocket J. "Rocky" Squirrel, a protagonist on the show with the other protagonist, Bullwinkle, was a plucky flying squirrel. Rocky was the best friend and ally of Bullwinkle, a moose with super strength. They were involved in zany adventures with other animals. Often with Mr. Peabody and the gang, they would confound their hapless nemeses Boris and Natasha, who were always required to make life hard complicated for Rocky and Bullwinkle.

The show had great political sarcasm and was able to poke fun of many everyday current events.

More Info: en.wikipedia.org