Jefferson Chamber of Commerce The Ehrhardt Group Share: Advertising / Public Relations / MarketingCommunications The Ehrhardt Group Visit Website 1100 Poydras St., Ste. 1325 New Orleans, LA 70163 (504) 558-0311 (504) 558-0344 (fax) LinkedIn Facebook Twitter About Map About The Ehrhardt Group is the leading communications firm for companies in the Gulf South. We connect our clients to the people and communities who matter most to them. What's Nearby? Distance: 5 10 15 20 25 50 mi.