I have no experience working with Google Maps, but I'd like to embed a "Choose your county" map in my webapp. My app only targets California, so it only needs to support one state, but I can't find any easy way to do this (without manually drawing overlay polygons for all the county lines).
I assumed I'd easily be able to find examples of "Choose your county"-style interfaces on Google somehow, but the only thing I found was this -- http://maps.huge.info/county.htm -- and I'm leaning towards hitting their API to pull the geometry for the whole state if I can't find a better option.
Does anyone have any experience or insight to help make this a little easier?
Google Fusion Tables now links to State, County, and Congressional District data for all of the US.
The geometry field of the fusion table contains a Polygon element for the given object. Their state boundaries polygons (and to a lesser extent the counties) look a little low resolution in a few places, but it may be good enough for you and should be relatively easy to grab.