| Delaware to Jacksonville (Texas) | 889.07 mi (1,430.83 km) |
| Delaware to Jacksonville Beach (Florida) | 697.75 mi (1,122.92 km) |
| Delaware to James Island (South Carolina) | 549.81 mi (884.84 km) |
| Delaware to Jamestown (New York) | 235.53 mi (379.05 km) |
| Delaware to Jamestown (North Dakota) | 903.24 mi (1,453.62 km) |
| Delaware to Janesville (Wisconsin) | 349.18 mi (561.96 km) |
| Delaware to Jasmine Estates (Florida) | 828.86 mi (1,333.92 km) |
| Delaware to Jasper (Alabama) | 501.01 mi (806.30 km) |
| Delaware to Jasper (Indiana) | 244.43 mi (393.38 km) |
| Delaware to Jefferson (Georgia) | 425.76 mi (685.20 km) |
| Delaware to Jefferson (Louisiana) | 817.22 mi (1,315.18 km) |
| Delaware to Jefferson City (Missouri) | 499.80 mi (804.35 km) |
| Delaware to Jefferson Hills (Pennsylvania) | 165.55 mi (266.42 km) |
| Delaware to Jefferson Valley-Yorktown (New York) | 489.99 mi (788.56 km) |
| Delaware to Jeffersontown (Kentucky) | 196.19 mi (315.73 km) |
