The Thurmond Historic District comprises the entire town and a small portion of the opposite riverbank. Thurmond was accessible solely by rail until 1921. The town occupies a narrow stretch of flat land along the Chesapeake and Ohio Railroad track, with no road between the tracks and the town. Instead, a single-lane road crosses the New River on a single-track railroad bridge, crosses the main line, and climbs the hill behind the town so that it parallels the town 150 feet higher on the hill before dropping down next to the tracks. Due to its strategic position on the rail line, the commercial center thrived in spite of the absence of a road.