Mason, Ohio Map and Directory

Regional Directory > States Menu > Ohio

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According to the United States Census Bureau, Mason is a City that is located in Warren County, Ohio at 39.36 degrees North and 84.31 degrees West. The city's time zone is America/New York, and the city's primary telephone area code is 513. The land area of Mason is about 18.65 square miles, whereas the water area of the city is about 0.04 square miles. Warren County's land area is about 401 square miles, so the city occupies about 4.6 percent of the county's total land area.

The Census Bureau estimates that Mason had about 33,870 residents in 2019, which is approximately 1,816 people per square mile of land area.

According to recent American Community Survey data, the median household income in Mason was about $100,594 per year.

The Ohio counties map at upper right shows Warren County, highlighted in red. Use the menu below to display interactive maps of Mason, either in a frame on this page or in full-screen mode.

Use the menu below to display categorized Mason directories.