Town Hall Address 105 Main St. Opelousas, LA 70570 United States- St. Landry County Website https://www.cityofopelousas.com Town Clerk 337-948-2520 105 Main St. Opelousas, LA 70570 United States Water 337-948-2527 105 Main St. Opelousas, LA 70570 United States Tax Collector 337-948-2527 105 Main St. Opelousas, LA 70570 United States County St. Landry