Three Tri-City post offices will extend hours Saturday and on Dec. 21.

The main Pasco post office, 3500 W. Court St., will be open from 9 a.m. to 5 p.m. both Saturdays. The Richland post office, 815 Jadwin Ave., and the West Richland post office, 4801 Van Giesen St., will be open from 10 a.m. to 3 p.m. both days.

The post offices will offer all their retail services both days, including package mailing and postage sales.

Other area post offices will remain open regular hours during the holidays.