Courthouses in Seneca, South Carolina, the US. Courthouses locations in Seneca, South Carolina. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Lawyer Real estate School Travel University All courthouses in Seneca Oconee County Magistrate Courthouse +1 864-888-1460 207 East North 1st Street A, Seneca, South Carolina 29678 Write a review Phone Website Directions