Unsophisticated type in a state, relatively speaking?

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Country cousin \Coun"try cousin\ A relative from the country visiting the city and unfamiliar with city manners and sights.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM OTHER ENTRIES ▪ Fiddlefest was the country cousin to the New Orleans music festival staged earlier this year. EXAMPLES FROM CORPUS ▪ But Davao is a country cousin .

Wiktionary Word definitions in Wiktionary
n. An acquaintance from the countryside, who is regarded by city-dwellers as being poorly adapted for city life.