Saint Paul, MN

ZIP code 55144 is a specialized postal code associated with 3M’s headquarters campus in Maplewood, Minnesota, rather than a broad residential district. Its principal landmark is 3M Center, the company’s corporate headquarters and research-and-development complex. The campus also includes the 3M Innovation Center, a visitor and demonstration facility showcasing the company’s technologies. Nearby streets and buildings are part of the larger eastern Twin Cities area.