Hammond Chamber Of Commerce 400 Northwest Railroad Avenue, Hammond, LA 70401, 985-345-4457, The mission of the Chamber is to strengthen the business climate, promote community development and enhance the economic vitality of the Hammond community within Tangipahoa Parish.  more... 

Hammond Downtown Development District 2 West Thomas Street, Hammond, LA 70401, 985-542-3471, The major goal of the Downtown Development District Authority is to upgrade and improve downtown Hammond.  more... 

Tangipahoa Parish Convention & Visitor Bureau 13143 Wardline Road, Hammond, LA 70401, 985-542-7520, 800-617-4505, Provides info about area accommodations, dining, events, attractions, shopping, and more. more...