Operating Hours & Seasons

Casa Grande Ruins National Monument is open every day of the year, except Thanksgiving, Christmas, and Independence Day, when the monument will be closed. The park has a gate that will open at 9 am daily. During our busy season of October 1 through April 30, the monument will close at 5 pm. During the summer season of May 1 through September 30, we will close at 4 pm. The gate closes 15 minutes prior to closing, with access for exiting the park still available on the outgoing side. All visitors will leave the park, including parking lots, picnic area, visitor center, and historic area, at closing.

An afternoon view of the Casa Grande (Big House) from the southwest.
Afternoon view of the "Big House" from the southwest.

Jim Creager


Please Note: Casa Grande Ruins National Monument implements visitor hour changes during the Summer season and during our Fall/Winter/Spring season. We apologize if you are relying on old materials, guidebooks, or other websites. Please use this website for the most up-to-date information about the park. We are not open and prepared for visitors until 9am and will continue to change our closing hours for our busy season and the less busy summer season.

Last updated: September 30, 2017

Contact the Park

Mailing Address:

1100 W. Ruins Drive
Coolidge, AZ 85128


(520) 723-3172
General park contact number includes a phone tree for finding the employee you wish to contact. Callers may dial zero for the phone attendant. Voicemail is available for many of the extensions.

Contact Us