Hayfork is a census designated place in Trinity County.
Highway 3
Has a very low crime rate does not have a police department but does have a County Sherriff and the California Highway Patrol. Cell phone service is spotty as you are in the mountains. Also be wary in the wintertime as it does snow in this area and usually the roads are cleaned up rather quickly, best advice would to bring chains for your vehicles tires just in case
2nd-order administrative division
Primary administrative division