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Contact CentralStar Cooperative, Inc.


Main Number: 800.631.3510

Email: [email protected] 

Lansing, Michigan Office
Shipping address:
4200 Forest Road
Lansing, MI 48910

Mailing address:
PO Box 23157
Lansing, MI 48909-3157

Waupun, Wisconsin Office 

Shipping address:
N11463 State Road 26
Waupun, WI 53963

Mailing address:
PO Box 191
Waupun, WI 53963

Michigan Laboratory
1163 Comet Lane – Suite 100
Grand Ledge, MI 48837
Phone: 800.836.8114


Wisconsin Laboratory
200 East Kelso Road
Kaukauna, WI 54130
Phone: 920.733.6598

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