Located in the southeastern corner of the county, it borders the following townships:
Lanier Township - north
Jackson Township, Montgomery County - northeast corner
German Township, Montgomery County - east
Madison Township, Butler County - southeast
Wayne Township, Butler County - south
Milford Township, Butler County - southwest corner
Somers Township - west
Gasper Township - northwest corner
Two incorporated villages are located in Gratis Township: Gratis in the north, and West Elkton in the south.
The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1. Two are elected in the year after the presidential election and one is elected in the year before it. There is also an elected township fiscal officer, who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election. Vacancies in the fiscal officership or on the board of trustees are filled by the remaining trustees.
The economy of Gratis exists predominantly by commuting with the nearby cities of Monroe and Winder. Along with some limited agriculture and livestock there is a single outlet/filling station in the community, locally referred to as The Gratis Store.
In an earlier time, nearby was the Sims Mill powered by a water pond. Most likely, the mill ground corn and wheat for corn meal and flour. Near the pond was the site of an earlier Creek Indian encampment.
Gratis's educational system is run by the Walton County Board of Education. The schools in the local district are Monroe Elementary, Carver Middle School, and Monroe Area High School. Residents also have the choice of three small private schools, George Walton Academy, Loganville Christian Academy, and Faith Academy.
As of the census of 2010, there were 881 people, 337 households, and 251 families residing in the village. The population density was 908.2 inhabitants per square mile (350.7/km2). There were 370 housing units at an average density of 381.4 per square mile (147.3/km2). The racial makeup of the village was 97.7% White, 0.5% African American, 0.6% Native American, and 1.2% from two or more races. Hispanic or Latino of any race were 0.3% of the population.
There were 337 households of which 34.1% had children under the age of 18 living with them, 53.1% were married couples living together, 13.9% had a female householder with no husband present, 7.4% had a male householder with no wife present, and 25.5% were non-families. 22.0% of all households were made up of individuals and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 2.96.
The median age in the village was 38.1 years. 23.3% of residents were under the age of 18; 9.5% were between the ages of 18 and 24; 25.5% were from 25 to 44; 29.3% were from 45 to 64; and 12.4% were 65 years of age or older. The gender makeup of the village was 49.7% male and 50.3% female.