Post Offices
Post Offices in & near Sulphur Springs, California. Operating hours, locations, phone/fax number, services information.
Casta Post Office
Castaic Post Office in Santa Clarita, California on Franklin Pkwy. Operating hours, phone number, services information, and other locations.
Address: 28201 Franklin Pkwy, Santa Clarita, CA 91383
Phone: 661-775-7166
Fax: 661-775-7199
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 10:00am - 6:00pmTuesday 10:00am - 6:00pm
Wednesday 10:00am - 6:00pm
Thursday 10:00am - 6:00pm
Friday 10:00am - 6:00pm
Saturday 9:00am - 5:00pm
Sunday Closed
Lobby Hours
Monday 5:00pmTuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 1:00pm
Sunday Closed
Last Collection Times
Monday ClosedTuesday 10:00am - 6:00pm
Wednesday 10:00am - 6:00pm
Thursday 10:00am - 6:00pm
Friday 10:00am - 6:00pm
Saturday 9:00am - 5:00pm
Sunday Closed
Santa Clarita Post Office
Address: 24355 Creekside Rd, Santa Clarita, CA 91355
Phone: 661-254-3270
Fax: 661-254-7318
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Valencia Post Office
Address: 25842 1/2 Tournament Rd, Valencia, CA 91355
Phone: 661-254-3270
Fax: 661-254-7318
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Lyon Post Office
Address: 23742 Lyons Ave, Newhall, CA 91321
Phone: 661-253-0771
Fax: 661-254-7318
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Newhall Post Office
Address: 24201 the Old Rd, Newhall, CA 91321
Phone: 661-253-0771
Fax: 661-253-9487
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Canyon Country Post Office
Address: 18336 Soledad Canyon Rd, Canyon Country, CA 91387
Phone: 661-251-5768
Fax: 661-254-7318
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457