Although primarily a residential area, the commune of San Giorgio a Cremano has maintained a local textiles industry since the Middle Ages, possibly as early as the 8th century.
San Giorgio also has a strong retail sector, located primarily along the Via Manzoni and Via De Lauzieres, and in the streets around one of the main squares, Piazza Massimo Troisi and the Circumvesuviana station, many small retail outlets and fashion stores can be found.