Still running with the city-state idea, to gain a sense of scale, if Aberdell was the size of Belarus, then symbol for "City State" takes up roughly the same area on the map as Homeric Laconia (Sparta) would.

It's worth noting, though, that while individual city-states were fairly small, some of them could have considerable cultural and political influence over their neighbours, similar to the hegemonies of the Delian and Peloponnesian Leagues, or they could form more "egalitarian" alliances in the form of confederations. I'm not aware of any grouping of city-states that took up an area the size of Belarus, but something about a quarter the size of Belarus wouldn't be unreasonable