This wiki covers at least 659 transit agencies in these states:
Arizona_|_Arkansas_|_California_|_Colorado_|_Idaho_|_Illinois_|_Indiana_|_Iowa_|_Kansas_|_Louisiana_|_Michigan_|_Minnesota_|_Missouri_|_Montana_|_Nebraska_|_Nevada_|_New Mexico_|_North Dakota_|_Ohio_|_Oklahoma_|_Oregon_|_South Dakota_|_Texas_|_Utah_|_Washington_|_Wisconsin_|_Wyoming
All agency list
Featured transit agencies
Casper Area Transit_|_La Junta Transit_|_Inglewood I-Line_|_San Francisco Municipal Railway
Featured bike share system
RTC Bike Share (Las Vegas)
Featured museums
Las Vegas Springs Preserve_|_Mathers Museum of World Cultures_|_Minnesota History Center_|_Unser Racing Museum_|_National Museum of the US Air Force_|_Palos Verdes Art Center
Featured sports venues
Sloan Park_|_Alamo Stadium_|_State Farm Center_|_Spokane Veterans' Memorial Arena_|_Allstate Arena_|_Standard Bank Stadium