Denham Springs is a city in Livingston Parish, Louisiana, United States. The 2010 U.S. census placed the population at 10,215, up from 8,757 at the 2000 U. S. census. At the 2020 United States census, 9,286 people lived in the city. The city is the largest area of commercial and residential development in Livingston Parish. Denham Springs and Walker are the only parish municipalities classified as cities. The area has been known as Amite Springs, Hill's Springs, and Denham Springs.