Mason is a city in southwestern Warren County, Ohio, United States, approximately 22 miles (35 km) from downtown Cincinnati.  Mason’s population is 30,712.

Mason is the largest city in Warren County, which is near the southwest corner of Ohio. Warren County is “Ohio’s Largest Playground” and Mason is the anchor. Come to Mason and stay for the fun! Regional attractions include The Golf Center, Great Wolf Lodge and Conference Center, Kings Island amusement park, and the annual Western & Southern Open. Local attractions include the Mason Community Center and Mason Historical Society’s Alverta Green Museum. Residents and visitors look forward to the annual Mason Heritage Festival, Christmas in Mason, and a wide variety of classes and events for all ages at Mason Community Center.

You don’t have to break the bank to enjoy Ohio’s Largest Playground! There are plenty of ways for visitors to play, splash and explore in Warren County for free. Visit Caesar Creek State Park for swimming, boating, hiking and fossil-searching, and check out Warren County’s full list of park for even more outdoor adventure. Hike, bike or rollerblade on the Little Miami Scenic Bike Trail. Interested in art? Visit the Franklin Murals. Take a self-guided walking tour of Springboro to learn about the Underground Railroad and visit as many as 50 confirmed safe houses.

Known as one of the most affluent communities in greater Cincinnati, Mason has been ranked among Money Magazine’s 50 Best Places to Live in the U.S. Visitors flock to Mason to catch the Western and Southern Open at the world class tennis center.