61737 -- U.S. ZIP code Municipality (1990): ELLSWORTH, Illinois All ZIPs for this municipality (1990): 61737 Population (2000): 577 Housing Units (2000): 207 Land area (2000): 29.726276 sq. miles (76.990699 sq. km) Water area (2000): 0.012535 sq. miles (0.032466 sq. km) Total area (2000): 29.738811 sq. miles (77.023165 sq. km) Located within: Illinois (IL) Location: 40.450325 N, 88.720527 W