Hi Russ and welcome. The zone map is put out by the USDA not by us. Try this map and mouse over your area to enlarge
http://garden.org/nga/zipzone/...
It's really intended for use by farmers anyway and is not all that effective for home gardeners because there are too many variables that have an effect on what zone your garden is. The Sunset zones are much more useful for gardeners (but still not perfect)
http://www.sunset.com/garden/c...
For example, when I lived in Utah, the whole Salt Lake valley was designated USDA zone 5 on the map. The front yard of our house (facing north) was zone 5 but a large area right near the house in the back yard (facing south) was at least two zones warmer, and I could overwinter a lot of plants there that would freeze and die out front.
Another example, if you look at the USDA map, zone 8 stretches just about all the way around the edges of the continent, up into the Pac. Northwest and down into Florida. Well I am originally from the Pac. Northwest and now live in Florida and it's for sure not the same for gardeners there in winter. Sure it never gets below a certain temperature in winter, because the massive Pacific Ocean keeps it warmer than anywhere else that far north. But it's also cold and grey and wet during the days with very short daylight and weak sunshine if you ever see it, completely unlike zone 8 in Florida where we can grow a lot of stuff all winter, and just need to keep some frost protection handy for a few cold nights here and there.
