1 Answer

They are open all over the USA. What state and town are you asking about? Here's a list of 6 Flags locations. 

CALIFORNIA
Six Flags Discovery Kingdom, Vallejo - near San Francisco
Six Flags Magic Mountain, Los Angeles
Six Flags Hurricane Harbor, Los Angeles

GEORGIA
Six Flags Over Georgia, Atlanta
Six Flags White Water, Atlanta

ILLINOIS
Six Flags Great America, Chicago

MARYLAND
Six Flags America, Baltimore/Washington, DC

MASSACHUSETTS
Six Flags New England, Springfield

MISSOURI
Six Flags St. Louis

NEW JERSEY
Six Flags Great Adventure, Jackson
Six Flags Hurricane Harbor, Jackson
Six Flags Wild Safari, Jackson

NEW YORK
The Great Escape & Splashwater Kingdom, Lake George
Six Flags Great Escape Lodge & Indoor Waterpark, Lake George

TEXAS
Six Flags Fiesta Texas, San Antonio
Six Flags Over Texas, Arlington - between Dallas and Ft. Worth
Six Flags Hurricane Harbor, Arlington - between Dallas and Ft. Worth

CANADA
La Ronde, Montreal

MEXICO
Six Flags Mexico, Mexico City