Port Profile Region & State Available Sites News & Publicity Bid Opportunities The Pemiscot County Port Authority is located on State Highway 84 East in Pemiscot County, between Hayti and Caruthersville, MO (see map). Pemiscot County Port Harbor is located at mile 849 on the Lower Mississippi River between St. Louis, MO and Memphis, TN. Thank you for considering the Pemiscot County Port Authority as a location for your next business. The Pemiscot County Port Staff are dedicated to ensuring prospective businesses be provided timely information, and will work tirelessly to accomodate your needs. The Missouri Department of Economic Development offers a wide range of financial and technical support for those wishing to locate a business in the State of Missouri. Programs include Business Developm Pemiscot County Port Authority | 2353 N State Highway D, Hayti, MO 63851 | (P) 573-333-4125 (F) 573-333-4216 powered by element 74