Contact Us

Postal address:

24040 Cosmos Rd.
Rapid City, SD 57702


(605) 343-9802


Contact us at

We look forward to receiving your questions and comments. Our staff strives to answer your requests in a timely manner.

For group rates

Please call us at (605) 343-9802

Hours of Operation:

The Cosmos is open from 8 am - dusk (summer months only) and

we are open seven days a week.

Season Dates:

  • April 9am - 5pm (weather permitting)
  • May 9am - 5pm (weather permitting)
  • Memorial Day Weekend 8am - 8pm (Sat. and Sun.)
  • June 8am - 8pm
  • July 8am - 8pm
  • August 9am - 6pm
  • Labor Day Weekend 9am - 7pm (Sat. and Sun.)
  • September 9am - 5pm (weather permitting)
  • October 9am - 5pm (weather permitting)