I remember back in the summer of 2006, I sent an email asking for any Iowa flags that were captured during the War of the Rebellion/Civil War. I got a reply back with a listing of Confederate flags that they still had....
Currently, New York, Illinois, Minnesota and Iowa still have Confederate flags. I am sure there are other states, but those four states I know 100% do.
Ironically, many Union flags were given back in the 1870/1880/1890 decades by former Confederates officers/generals.
Have a great weekend!
Shawn Prouty