Waterloo is a town located in Lauderdale County, in the state of Alabama (AL), United States. Nestled in the East South Central division of the South region, it covers an area of 0.8 square miles (2.0 km²) and sits at an elevation of 466 ft. With a population of approximately 208 residents, Waterloo offers a peaceful, rural atmosphere.
The town's population is composed of about 49.52% males and 50.48% females, and it has a population density of 260.00 people per square mile (100.39/km²). Waterloo lies at a latitude of 34.92 and a longitude of -88.06, operating in the UTC-6.
Locals reflect a blend of American ancestry, with roots primarily in United States (23.6%), followed by English (16.3%), German (3.4%), and Scotch-Irish (1.9%) heritage. The town is identified by the ZIP code 35677.