Yes, a person may engage in consensual sexual acts with a person that is 16 or 17 years of age provided that the person is less than 3 years older than the minor. Idaho Statutes §§ 18-6101(2).

Can a 17 year old date a 20 year old in Idaho?

The change to state law would allow consensual penetration between 16-year-old girls and boys up to age 19, and 17-year-old girls and boys up to age 20. Sexual acts with children under 16 are punishable by lewd conduct laws. Currently, only men can be prosecuted under Idahos rape laws.