Ohio should definitely be P&G. Not fucking Wendy's. Shit, I'd put P&G, Macy's and Kroger all above Wendy's. They even have Gillette as the Massachusetts company - a brand that is owned by P&G.
Apple is huge in California, but I'd say one of the social media sites now - particularly Facebook.
I disagree with Minnesota too. Didn't even know Pillsbury was from Minnesota, but I do know Best Buy and Target are based in Minnesota.
And Starbucks is certainly a very recognizable Washington company, but I'd put Microsoft ahead of Starbucks.