Clatsop County: The North/South Divide

Somebody want to take a shot at explaining exactly what that, "The North/South County Divide", is?

The subject was brought up at a dinner party last night and when queried as to what she meant, the exclaimer had no clue "now that you ask it but, Commissioner Samuelson says it all the time about doing away with it."

I guess you can all guess where it went after that but, please, you got an answer?

Give it to us.