High Quality Content by WIKIPEDIA articles! Oak Lawn is a neighborhood in Dallas, Texas (USA), defined in Dallas City Ordinance 21859 as Planned Development District No. 193, the Oak Lawn Special Purpose District. The unofficial boundaries are Turtle Creek Boulevard, Central Expressway, the City of Highland Park, Inwood Road, and Harry Hines Boulevard. It is over 12 square miles (31 km2) in area. Officially it is bounded by the City of Highland Park, the North Central Expressway, Stemmons Freeway, Woodall Rodgers Freeway, and other roads. The district is within the boundary defined by the City of Dallas law, excluding any existing planned development districts within.