Hillcrest is an unincorporated place in central Warren County

Warren County, Ohio

Warren County is a county located in the state of Ohio, United States. The population was 212,693 at the 2010 census. Its county seat is Lebanon. Warren County was erected May 1, 1803, from Hamilton County, and named for Dr...

, Ohio

Ohio

Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 on U.S. Route 42

U.S. Route 42

U.S. Route 42 is an east–west United States highway that runs northeast-southwest for 355 miles from Cleveland, Ohio to Louisville, Kentucky. The route has several names including Pearl Road from Cleveland to Medina in Northeast Ohio, the Cincinnati and Lebanon Pike in southwestern Ohio and...

 about halfway between Mason

Mason, Ohio

Mason is an affluent city in southwestern Warren County, Ohio, United States, 22 miles away from Cincinnati . As of the 2010 census, Mason's population was 30,712. Mason has experienced fast growth, with its historic Main Street remaining at the center of the community...

, four miles to the southwest, and Lebanon

Lebanon, Ohio

The population at the 2010 census was 20,033. As of the census of 2000, there were 16,962 people residing in the city. The population density was 1,440.6 people per square mile . There were 6,218 housing units at an average density of 528.1 per square mile...

, three miles to the northeast. The community straddles the township line between Turtlecreek

Turtlecreek Township, Warren County, Ohio

Turtlecreek Township is one of the eleven townships of Warren County, Ohio, United States. It is in the central part of the county and surrounds the county seat of Lebanon. Turtlecreek is the largest township in the county, originally containing sixty-three whole and seven fractional sections. ...

 and Union

Union Township, Warren County, Ohio

Union Township is one of the eleven townships of Warren County, Ohio, United States, located in the central part of the county. It was established January 3, 1815 and named Union as it was formed from parts of Deerfield and Turtlecreek Townships. The 2000 census found 4,668 people in the township,...

 Townships. The former Cincinnati, Lebanon and Northern Railway runs just east of the community and once had a stop here called "Turtlecreek". It is in the Lebanon City School District and is served by the Lebanon telephone exchange and post office.