Major cities and zip codes served by Culligan of Fort Morgan, CO:
80720 – Akron, CO; 80801 - Anton, CO; 80723 – Brush, CO; 80723 – Brush, CO; 80103 – Byers, CO; 80812 – Cope, CO; 80105 – Deer Trail, CO; 80701 – Fort Morgan, CO; 80733 – Hillrose, CO; 80654 – Hoyt, CO; 80757 - Last Chance, CO; 80740 – Lindon, CO; 80705 – Log Lane Village, CO; 80742 – New Raymer, CO; 80649 – Orchard, CO; 80743 – Otis, CO; 80652 – Roggen, CO; 80750 – Snyder, CO; 80136 – Strasburg, CO; 80754 – Stonehan, CO; 80653 – Weldona, CO; 80654 – Wiggins, CO; 80757 – Woodrow, CO and surrounding areas

Major cities and zip codes served by Culligan of Sterling, CO:
80722 – Atwood, CO; 80726 – Crook, CO; 80728 – Fleming, CO; 80731 – Haxtun, CO; 80734 – Holyoke, CO; 80736 – Iliff, CO; 80741 – Merino, CO; 80745 – Padroni, CO; 80747 – Peetz, CO; 80736 – Proctor, CO; 80751 – Sterling, CO and surrounding areas