St. Tammany Parish is a parish located in the U.S. state of Louisiana, in the New Orleans–Metairie–Kenner Metropolitan Statistical Area. The parish seat is Covington. As of the 2010 census, the population was 233740, up from 191,268 in 2000. Most new residents are thought to have come from St. Bernard Parish. St. Tammany Parish is one of the fastest-growing parishes in the state, along with Livingston and Ascension.
St. Tammany Parish is colloquially referred to as part of the "Northshore" or "North Shore" throughout metropolitan New Orleans, owing to its location on Lake Pontchartrain. It is the most affluent parish in the metro area, has a nationally recognized system of public schools, and is the most politically conservative parish in the New Orleans region.
The Moon Handbooks New Orleans: Including Cajun Country and the River Road, published in 2007, stated that people wanting to live in proximity to New Orleans without living in New Orleans will probably cause the population of St. Tammany Parish to increase.