how long has Dairy Queen been in business?
how long has Dairy Queen been in business?
user
It’s been at least since 1963.  They’ve been owned by the same family since 1989, and I’m not sure exactly when they started up their first store.
assistant
are they in all 50 states of the US?
user
Yes, although they’re not in Delaware and Hawaii.  This is listed on their website:
http://www.dairyqueen.com/us/Menu/Locations/Our_Dairy_Queen_Locations.aspx
assistant
do they also sell food?
user