East Baton Rouge Parish (French: Paroisse de Bâton-Rouge Est; Spanish: Parroquia del Este de Bastón Rojo) is the most populous parish in the U.S. state of Louisiana.

[3] As of the 2020 United States census, there were 456,781 people, 161,536 households, and 95,243 families residing in the parish.

The 2019 American Community Survey estimated 443,763 people lived in East Baton Rouge,[13] up from 440,171 at the 2010 United States census.

East Baton Rouge Parish had a home-ownership rate of 59.8%, and the median value of an owner-occupied housing unit was $194,000.

The parish courthouse in Baton Rouge is one of 26 public buildings constructed by contractor George A. Caldwell in the 1930s.

[20] Since 1980, East Baton Rouge Parish has been a bellwether in presidential elections, voting for the winner of the presidency in all but two elections (it voted for George H. W. Bush in 1992 and Hillary Clinton in 2016), but not necessarily the winner of Louisiana.

[21] In 2016, John Kennedy lost East Baton Rouge Parish in his otherwise highly successful U.S. Senate race against Democratic Louisiana Public Service Commissioner Foster Campbell, who prevailed 52-48%.

[22] In 2024, Republican Sid Edwards defeated Weston-Broome to retake the mayoralty of Baton Rouge.

The East Baton Rouge Parish Sheriff's Office employs approximately 850 deputies, making it one of the largest law enforcement agencies in the state of Louisiana.

Notable past sheriffs include politician Philemon Thomas; baseball player Terry Felton became a captain in the department after retiring from sports.

Major hospitals include: Emergency Medical Services in EBR Parish are provided by East Baton Rouge EMS and Acadian Ambulance.