The county carries over from yer to year?! Wow, that's precisely what I was asking for! Not done in Virginia for some reason, or is there a way to ask the software to do it that I've missed?

Zip codes wouldn't help me. My zip code can either be the City or the County. I don't have memorized all the street names to know if they are within city limits or not. The city has only 5,000 residents, so I've got a lot of streets memorized. Still, the software should be able to carry it over and save many many hours of work.