Rosanky is a small community situated on Farm to Market Road 535 in the southern part of Bastrop County, Texas. It has a post office with a unique ZIP code, 78953, and is named after Ed Rosanky, a Prussian immigrant who settled in the area in 1854.

There is a Automobile History Museum in Central Texas.

Rosanky experiences hot and humid summers and mild to cool winters, classified as a humid subtropical climate with the code “Cfa” according to the Köppen Climate Classification system.

The district’s educational jurisdiction falls under the purview of Smithville Independent School District, which is responsible for the operation of Smithville High School.