Elm Grove, OK

Elm Grove is a tiny community of about 100 people in eastern Oklahoma's Adair County, roughly 15 miles southeast of Stilwell. Reach it via US-59 south from Stilwell, then county roads heading east into the Ozark foothills. From Tulsa, it's about 90 miles via US-412 east to US-59 south. The community sits in historic Cherokee Nation territory and still maintains its century-old post office.