I was a kid in North Chicago suburbs, and have lived in St. Louis, San Antonio, and Houston.
First Chicago - Cubs, White Sox, Bears, Blackhawks, Bulls and I think there's an MLS soccer team, and a spattering of satellite minor league baseball teams in the area. All are well supported and have a national presence. ( oh, yeah, Chicago has real, barehand softball too ) -- Great Sports Town ?
St Louis - Cardinals, Rams, Blues. My opinion is St. Louis as a baseball town. The Rams and Blues get planty of fan support, but it's the year long love affair with the Redbirds that sets it apart.
San Antonio - Spurs bay-bee. Spurs own San Antonio. No questions asked.
Houston -- Astros ( I think there's an MLB team here ), Rockets, Texans, MLS Dynamo. This is a football town.
What I think are great areas for their sports franchises --
Boston / New England area --- Celtics, Bruins, Red Sox, Patriots. If there's a winning reputations, seemingly always in contention, and rabid fan base, this is right up there.
New York - 'nuf said. the only question that remains is Jets or Giants. Chicago North Side / South Side, Cubs/ Sox, I understand. Jets / Giants someone will have to educate me.
Denver - Broncos, Rockies, Nuggets, Avalanche. Always heard Denver is a great sports town. Broncos have plenty of history, and the Rockies have a good draw. Maybe it's the Colorado demographics and geopgraphy that propagate the great sports town rep.
Bay Area - Giants, 49'ers, Raiders. Sacramento Kings are close but I've heard there are facility issues, but sports town ? Should be. Lots of winners and great history.
Pittsburgh - this might be it. Steelers, resurgent Pirates, and Penguins. Just off the top of my head, the Steelers own Pittsburgh. Cool that all three teams have the same colors.
Detroit -- Tigers, Red Wings, Pistons. wow. back in the day Detroit kicked butt. It probabaly was a great sports town. All those teams rocked, and contended, and won.
Dallas - Rangers, Cowboys, Mavericks, North Stars. Great Sports Town ?? not so much.
Who's on your list --- Great Sports Towns, good sports towns. My jist is metropolitan areas. Lincoln, Nebraska great in the fall, but a one horse town. Who's on your list.....hometown bias is accepted at this window.
overall - ??
Have at it.......