Not a North South issue to me. I also used those as South due to polling I've seen that basically divides voters into three zones with 510,520,530,540 being Zone 1, Freeport north to DeFuniak as Zone 2 and DeFuniak north as Zone 3.
When your tracking turnout to determine where you target information you fall into the same usage.
I hope everyone will one day realize that we are truly not a divided populous.
