Traditionally, Smallville has been located in Kansas, and Metropolis in New York, basically a comics-alternate version of New York City. But the geography seems a little bit off in Superman & Lois.
In the season 1 episode Broken Trust, the Smallville high school football team goes off to Metropolis to play a game against them. This seems odd to say the least; college sports teams may fly around the country like that, but high school teams?
In the season 3 episode Uncontrollable Forces, it implies that Metropolis is a medium distance away from Smallville, a place you could get to and back within a day but it would be bit of a long drive. So maybe Smallville is in a rural part of New York now?
No such luck; in the season 3 episode Too Close To Home, Clark makes an offhand reference to Shawnee County being near Smallville. So we are still in Kansas, Toto.
All this leads to a very strange implication: Metropolis appears to be in or very close to Kansas in this continuity. And yet, establishing shots for scenes in Metropolis show it's in a coastal location, which would seem to rule out landlocked Kansas. So... do we have any definitive information about its location in this show?