Norristown is a home rule municipality in Montgomery County, Pennsylvania, 6 miles northwest of the city limits of Philadelphia, on the Schuylkill River. It is the county seat of Montgomery County. Norristown is in a rich agricultural region; in the past, it had extensive manufactures of cigars, tacks, wire, screws, boilers, bolts, silos, tanks, iron, hosiery, knitting machines, underwear, shirts, lumber and milling machinery, paper boxes, rugs, carpets, etc. Norristown apartments for rent comparison page shows most up to date rent information on Norristown apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.