Finances in Timber Lake, South Dakota, the US. Finances locations in Timber Lake, South Dakota. Find the nearest finances locations, near you. All types of business services Accounting ATM Finance School All finances in Timber Lake ATM (Timber Lake Services Station) ATM Finance 824 Main Street, Timber Lake, South Dakota 57656 Write a review Phone Directions Dewey County Auditor Finance Accounting +1 605-865-3672 700 C Street, Timber Lake, South Dakota 57656 Write a review Phone Website Directions