Linnea Lomax, 19, was last seen at a business on the 800th block of Howe Avenue around 1 p.m. Tuesday, according to the sheriff's department.
The sheriff's department describes Lomax as a 5-foot-2, white female, with blonde hair and blue eyes, and weighing 100 pounds. She was last seen wearing green pants and a dark blue hooded sweatshirt.
Lomax is classified as "at-risk" because her disappearance is inconsistent with her regular behavior patterns, according to the Sheriff's Department.
The Sheriff's Department urges anyone with information about Lomax's whereabouts to contact them at (916) 874-5115.