I wound up calling my local school districts to ask the # of registered homeschoolers. In CO, you have to file a letter of intent with your local district once you child hits age seven. Checking with the local districts of the areas you are considering moving might be a way to give you a ballpark figure for how lonely you will be wink.

From there, you could check A to Z Home's cool page to see if you can find local groups to ascertain if they are all going to be religious. I've found that we have a lot of religious support for hsing around here (Northern Colorado) and then those who aren't hsing for religious reasons either tend to be unschoolers who don't do a lot of formal group activity or they just are on their own. I'm itching to get something like this going around here, but I just can't find enough people to make it viable as of yet.