Courthouses in Blackwell, Oklahoma, the US. Courthouses locations in Blackwell, Oklahoma. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Insurance Lawyer Real estate School Travel All courthouses in Blackwell Kay County Court Clerk Courthouse +1 580-363-2080 221 West Blackwell Avenue, Blackwell, Oklahoma 74631 Write a review Phone Directions