20 posts and no California Girls ?
Ha! Got one for Delaware:
Delaware Slide - George Thorogood and the Destroyers
The Illinois Enema Bandit - Frank Zappa
Mississippi Haf-Step Uptown Toodeloo - Grateful Dead
Tennessee Jed - Grateful Dead
The WASP (Texas Radio and the Big Beat) - The Doors
West Virginia Fantasies - Chicago
I Owe a Lot to Iowa Pot - Napoleon XIV 
Hawaii Five-0 - Ventures
2120 South Michigan Avenue - Rolling Stones
Alaska - UK
Poofter’s Froth Wyoming Plans Ahead - Frank Zappa
Here’s a list - Error 404 (Not Found)
Not all are rock songs, although I’ve heard uptempo covers of some like Moonlight in Vermont.
Massachusetts - Bee Gees
Cold Kentucky Rain - Elvis
Texas Flood, Stevie Ray Vaughn
I can think of many songs that have “New York” in the title, but a lot of them are really referring to the city.
Ace Frehley - New York Groove
Chicago - Another Rainy Day in New York City
Don Henley - New York Minute
Other states:
Grateful Dead - Alabama Getaway
LL Cool J - Going Back to Cali
Elvis Presley - Blue Hawaii
Chris Rea- Texas
James Taylor- Carolina in My Mind (he didn’t specify, but his family spent a lot of time in North Carolina)
Practically all of them. But someone already mentioned Billy Joel’s “New York State of Mind.” 
“Oklahoma USA” by the Kinks (arguably not a rock song, but at least a song by a rock band)
…and they mention a dozen or so other states in the lyrics…:dubious:
The Yellow Rose of Texas by Mitch Miller (hey, it was a number one top 40 hit in the rock era).
“Ohio” by Crosby, Stills, Nash, and Young
North To Alaska, Johnny Horton. More of a pop novelty song/movie theme, but it hit the charts.
Mainline Florida–Clapton
I was actually thinking about starting a thread about songs with titles that consist of a city and state. Thought up a bunch, though only one that was really rock – Chuck Berry’s “Memphis, Tennessee”.
Sweet Virginia - Rolling stones
Mississippi - Bob Dylan
Good tune, but it’s blues, not rock.
Oh, Virginia - Blessid Union of Souls
Definitely about the state, btw.
Aw damn! I spent too much time wondering why Hotel California wasn’t in the OP.
I suppose the Bee Gees qualify as rock to some 
“California”-Phantom Planet