Spencerville is a village located in Allen County, in the state of Ohio (OH), United States. Nestled in the East North Central division of the Midwest region, it covers an area of 0.9 square miles (2.0 km²) and sits at an elevation of 833 ft. With a population of approximately 2,235 residents, Spencerville offers a peaceful, rural atmosphere.
The town's population is composed of about 47.34% males and 52.66% females, and it has a population density of 456.04 people per square mile (948.28/km²). Spencerville lies at a latitude of 40.71 and a longitude of -84.35, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (10.9%), followed by English (5.8%), German (36.9%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 45887.