There are a few already

I’m thinking about organizing tour groups to visit the Great Synagogues of Montana, Idaho and Wyoming - I’m sure it’ll draw as many people as an atheists group

Actually there probably are groups in Montana that could fill this void- they’re just not members here.

I am not good at or interested in being a leader, so forget about me starting a central Iowa group on here. We do have an Iowa group, but they never meet and the vast majority of those who have joined it no longer live in Iowa, they are just former Iowans or people who still have some interest or attachment to this state. I think one of the big roadblocks to an Iowa group is that it seems like most members of Agnostic who still live in Iowa are in the closet about their non-belief. So they usually don't even have a photo of themselves on here or use their real name in any way. Very few Iowa residents who are members here are active at all on the site. As long as there is such fear of being outed or being known publicly as non-believing, I doubt we will ever have enough openly out members in my state for there to be much interest in gathering publicly to network or socialize.

Also, it appears, at least for the women who live in Iowa and are members of this site, that except for a very few, the rest appear to just be interested in finding people to date thru Agnostic.com and have no interest in the community. So they join the site for dating and soon after see that there are few or no prospects in their area, so the leave the site for good or else only come back occasionally to see if any new members have joined in their area that are interested in dating.

It is easy to find members of Agnostic who live near you. In your case, maybe not easy. Folks who live in mainland USA, who live in good sized cities, it is possible to find Thinkers.

There are several localized groups.
If members want to start more groups for their areas, they've had the
option right along.