Tangipahoa Parish is a parish located on the southeastern border of the U.S. state of Louisiana. As of the 2020 census, the population was 133,157. The parish seat is Amite City, while the largest city is Hammond. Southeastern Louisiana University is located in Hammond. Lake Pontchartrain borders the southeastern side of the parish. The name Tangipahoa comes from an Acolapissa word meaning "ear of corn" or "those who gather corn." The parish was organized in 1869 during the Reconstruction era.