Most state senates, as far as I am aware--and while I used to do work in this space I am no expert--are elected by roughly equivalently-populated districts. They're an "upper house" that might be elected on a longer cycle but they're still fairly similar in partitioning (just usually fewer of its members).

Which is fine to me, tbh. Land doesn't need to vote.

There is certainly a valid view to see it as a way to represent those interests.

To my knowledge, counties and cities are almost always political subdivisions of the State, so that "nod" to geography isn't justified by that nominal sovereignty.

Usually a state senate is an upper house that has a smaller number of members, and usually has unique "advise and consent" powers over judicial and executive appointments.