The number of senators remained constant at 19, while the House increased from 51 to 52 members.

The Democrats maintained one hundred percent of the senate seats, while the Republicans continued to have a single seat in the House, one of the two from Navajo County.

The Legislature met for the regular session at the State Capitol in Phoenix on January 9, 1939; and adjourned on March 13.

[1] There was a special session which was held from September 23–27, 1940.

[1]: 29 The asterisk (*) denotes members of the previous Legislature who continued in office as members of this Legislature.