J Street in Marysville is a public street that is divided into two parts by the Yuba County Government Center. The southern part runs between 3rd Street and 8th Street, while the northern part runs between Featherside Way and Pine Street.

From south to north, significant places on J Street include the Salvation Army, Alibi, Freed Center for Independent Living, Arne's Paint Store, Montana's, and Save Mart Supermarkets.