Check out Abigail's Geography::States It's pretty cool

Yes indeed! It is lacking the cities isn't it? My point/suggestion is.. This seems to be statistical data? Maybe having this be a static thing is not the best idea in the long run. Maybe this data (if it's statistical, could be turned into a living breathing module that mines the data.

Of course, maybe this is way off your interests.

Aside from that- This looks to me like an interesting bunch of calculations, if this is not throwaway code (or what it does is not just a hack but a long term need fulfillment)- consider porting some of this into a module, or placing some subroutines aside that you can organize yourself.

If the data changes- the way of recreating the data is very important.