NiteRider, I'm not sure what a "Reformed" church is anymore, as I've seen people describe Calvary Chapels as "Reformed" churches!
If there is a particular denomination (or denominations) you would categorize that way, try doing a web search for that denomination. Many of them have lists of locations of their congregations, often searchable.
Also, you might find more "community" type churches in rural and semi-rural areas like those you are looking at. Often, a generic independent community church will serve those with a wide range of backgrounds, rather than a bunch of tiny churches with very specific denominations. The community church will probably be fairly small as it is, and draw from a wide area around its location. The pastor there will likely be a bi-vocational pastor, perhaps working as a rancher and a pastor, or a teacher and a pastor, or an oilman and a pastor (etc.)
Small towns and rural areas just don't generally have the variety of specific denominations that a more populated area would have.