TALLAHASSEE — Couples living together are no longer breaking the law in Florida.

Governor Rick Scott signed a bill on Wednesday to repeal the state’s largely unenforced prohibition on cohabitation. It was one of 20 bills he signed into law.

Under a law that has been on the books since 1868, a woman and man living together could be fined $500 and locked up in jail for 60 days. According to 2014 Census data, there are nearly 438,000 unmarried male-female couples among 7.3 million Florida households.

The new law repeals the entire statute covering married or unmarried women and men ‘‘engaging in open behavior that is gross lewdness and lascivious.’’

Florida was one of only a handful of states that still have a law making cohabitation illegal.

Associated Press