Lewistown is largely an agricultural community of wheat farms and cattle ranches and is considered a trade center for the area. Settled by Croatians from Bribir near the Adriatic, much of the town's stonework and high quality interiors of the buildings were crafted by Norwegian and other highly skilled workers. the town. Many well-preserved historic businesses and homes are scattered throughout the town.
Lewistown is at the geographic center of Montana in the vast Judith Basin and the topography of the area is characterized by rolling prairie, farms, ranches and the Snowy and Judith mountain ranges.