Concordia Parish borders the Mississippi River in eastern central Louisiana. As of the 2010 census, the population was 20,822. The parish seat is Vidalia. The parish was formed in 1807.
Ferriday is a town in Concordia Parish, which borders the Mississippi River and is located on the central eastern border of Louisiana, United States. The population was 3,511 at the 2010 census. It is an African-American majority town.
Ridgecrest is a small town in Concordia Parish, Louisiana, United States. The population was 694 at the 2010 census.
Vidalia is the largest city and the parish seat of Concordia Parish, Louisiana, United States. The population was 4,299 as of the 2010 census.
Avondale is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States, on the west bank of the Mississippi River. The population was 4,582 in 2020. It is part of the New Orleans–Metairie–Kenner metropolitan statistical area.
Bridge City is an unincorporated community and census-designated place (CDP) in Jefferson Parish, Louisiana, United States. It was established in the 1930s during the construction of the Huey P. Long Bridge over the Mississippi River. The town is located on the south side of the river. It is part of the New Orleans–Metairie–Kenner metropolitan statistical area.
Elmwood is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States, within the New Orleans–Metairie–Kenner metropolitan statistical area. The population was 4,635 at the 2010 census, and 5,649 in 2020. Elmwood was part of neighboring Jefferson's census area from 1960 to 1990. The ZIP Code serving Elmwood is 70123.
Jefferson is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States, on the north side of the Mississippi River. Jefferson is part of the New Orleans–Metairie–Kenner metropolitan statistical area. The population was 11,193 at the 2010 census, and 10,533 in 2020. It is often known by locals as "Old Jefferson", but should not be confused with Old Jefferson in East Baton Rouge Parish, Louisiana.
Marrero is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States. Marrero is on the south side of the Mississippi River, within the New Orleans–Metairie–Kenner metropolitan statistical area. The population was 32,382 at the 2020 U.S. census.
River Ridge is an unincorporated community and census-designated place (CDP) in Jefferson Parish, Louisiana, United States. It is a suburb of New Orleans. The population was 13,591 in 2020.
Terrytown is an unincorporated community and census-designated place (CDP) in Jefferson Parish, Louisiana, United States. It is on the "Westbank" of the Mississippi River. It is a suburb within the New Orleans–Metairie–Kenner metropolitan statistical area. The population was 23,319 at the 2010 census, and 25,278 in 2020.
Waggaman is a census-designated place and unincorporated community in Jefferson Parish, Louisiana, United States. Waggaman is on the West Bank of the Mississippi River, within the New Orleans–Metairie–Kenner metropolitan statistical area. The population was 9,835 at the 2020 census. The area was named for U.S. Senator George Augustus Waggaman (1782–1843).
Chackbay is a census-designated place (CDP) in northern Lafourche Parish, Louisiana, United States. The population was 5,177 at the 2010 census, up from 4,018 at the 2000 census. It is part of the Houma–Bayou Cane–Thibodaux Metropolitan Statistical Area.
Galliano is an unincorporated community and census-designated place (CDP) on the Bayou Lafourche in Lafourche Parish, Louisiana, United States. As of the 2010 census, the CDP population was 7,676. It is part of the Houma–Bayou Cane–Thibodaux Metropolitan Statistical Area.
Poydras is a census-designated place (CDP) in St. Bernard Parish, Louisiana, United States. The population was 3,886 at the 2000 census and 2,536 in 2020. It is part of the New Orleans–Metairie–Kenner Metropolitan Statistical Area. Poydras is on the East Bank of the Mississippi River, just upriver from the Plaquemines Parish line.
Violet is a census-designated place (CDP) in St. Bernard Parish, Louisiana, United States. The population was 5,758 at the 2020 census. Violet is located on the east bank of the Mississippi River, approximately 7.5 miles (12.1 km) southeast of New Orleans and is part of the New Orleans–Metairie–Kenner metropolitan statistical area.
Hahnville is a census-designated place (CDP) in and the parish seat of St. Charles Parish, Louisiana, United States. The population was 2,792 at the 2000 census and 2,959 in 2020. For information on the origin of Hahnville, see Michael Hahn (1830–1886).
Des Allemands is an unincorporated community and census-designated place (CDP) in Lafourche and St. Charles parishes in the southeastern part of the U.S. state of Louisiana. The population was 2,179 at the 2020 census. The town, known as the "Catfish Capital of the Universe", is along the Bayou des Allemands, which is the boundary of Lafourche and St. Charles parishes. Lac des Allemands is located northwest of the town. The ZIP code for Des Allemands is 70030.
The Natchez Micropolitan Statistical Area is a micropolitan area that consists of Adams County, Mississippi and Concordia Parish, Louisiana. As of the 2000 census, the μSA had a population of 54,587.
Spokane is an unincorporated community and census-designated place (CDP) in Concordia Parish, Louisiana, United States. As of the 2010 census it had a population of 442.
United States 
Louisiana 
