CA Civ Proc Code Section 38

Unless the provision or context otherwise requires, a reference in a statute to a judicial district means:

(a)

As it relates to a court of appeal, the court of appeal district.

(b)

As it relates to a superior court, the county.

(c)

As it relates to a municipal court, the municipal court district.

(d)

As it relates to a county in which there is no municipal court, the county.