Slidell, Louisiana is nestled in the south east tip of St. Tammany Parish just 30 miles north of New Orleans near the intersection of Interstates 10, 12 and 59. We are about 12 miles west of the state line with Mississippi and about 3 miles to the north of Lake Pontchartrain. Sitting near some of the most beautiful waterways of the Honey Island Swamp and marshlands of coastal Louisiana, Slidell is situated in a very diverse geographic local.