Welcome to Chief Okemos Sportsman’s Club!

COSC is a family-friendly gun and archery club in Dimondale, Michigan, located about 15 minutes west of Lansing.


To promote the safe and responsible use of firearms and archery activities in the Mid-Michigan area

C.O.S.C. Pledge

I give my pledge as an American to save and faithfully defend from waste the natural resources of my country, its air, soil, and materials, its forests, waters and wildlife.

Renew your COSC Membership

Club Hours:  9:00 am to 1/2 hour before sunset, but not past 9:00 pm, so please pay attention to the time of sunset.

  • 11/18/2019 – Due to the recent problems the club has had on the ranges and the lack of member participation:

    In the upkeep of the club, the board of directors has decided to place  a cap of 700 members. We will no longer be accepting new member applications at this time. Also we will no longer be taking walk-ins off the street, you will have to be sponsored by a member in good standing.

  • Non-members use of the COSC facilities is strictly prohibited.
  • Members found using the ranges or facilities in a destructive manner may be subject to revocation of membership.

Club News

  • It’s time to renew your membership for the 2020 calendar year. Use the membership application enclosed in the November newsletter or download one from this site. Members who have not renewed by March 31, 2020 will be dropped from the membership rolls and will have to reapply for membership as a new member.
  • See the January 2020 newsletter for upcoming club activities.  Annual Officer and Board Member Election at January 13, 2020. Members who have paid their 2020 dues are eligible to vote in this election. Please come to help shape the future of our club.
  • Will Game Dinner – March 21, 2020. Tickets available at January – March membership meetings or via mail. See the Camp Dinner web page for details.