Gratis is a village located in Preble 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 876 ft. With a population of approximately 934 residents, Gratis offers a peaceful, rural atmosphere.
The town's population is composed of about 52.14% males and 47.86% females, and it has a population density of 993.62 people per square mile (383.64/km²). Gratis lies at a latitude of 39.65 and a longitude of -84.53, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (14.3%), followed by English (5.9%), German (19.4%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 45330.