I only watched the scene around the impound yard, but most of those stores are on French Street. You can see towards Boss' bank when the boys escape jail, but the bank is blocked by a truck. You can also see a redressed Rhuebottoms and paint store in the background when Sheriff Little crashes through the fence. The building with the fence is redressed as different businesses in several episodes.
Midwest Street (Hazzard Square) played Springville in 'Deputy Dukes'.
Can you give examples of episodes where the town in Chickasaw appeared and I should be able to tell you where they were filmed. I think they generally used French Street for Chickasaw, which is the one behind the the courthouse between Midwest Street and New York Street.