Sandwich is a city located in Dekalb County, in the state of Illinois (IL), United States. Nestled in the East North Central division of the Midwest region, it covers an area of 3.0 square miles (8.0 km²) and sits at an elevation of 670 ft. With a population of approximately 6,509 residents, Sandwich offers a peaceful, rural atmosphere.
The town's population is composed of about 48.98% males and 51.02% females, and it has a population density of 162.46 people per square mile (834.93/km²). Sandwich lies at a latitude of 41.65 and a longitude of -88.62, operating in the UTC-6.
Locals reflect a blend of American ancestry, with roots primarily in United States (4.3%), followed by English (11.1%), German (31.4%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 60548.