The Village of Oak Lawn is a Tree City USA since 1996 and a recipient of a Growth Award 8 years. The Village of Oak Lawn recognizes that trees beautify and lend value to our homes, neighborhoods, parks and business areas. At the same time, trees conserve energy, help clean the air, protect rivers and streams, and provide a habitat for wildlife. The Village maintains over 18,000 parkway trees. The Village offers a variety of programs to encourage parkway tree planting and maintenance in the community.