Counties in the 4th

The 4th Congressional District includes Benton, Boone, Carroll, Clinton, Hendricks, Jasper, Montgomery, Morgan, Newton, Putnam, Tippecanoe, Warren, and White counties, as well as parts of Cass and Fountain counties and one township in Howard County.

In Cass County, the district includes most of the city of Logansport and the five townships of Boone, Clinton, Eel, Jefferson, Noble, and Washington as well as part of the township of Deer Creek. The county is partitioned roughly by Indiana S Co Rd 200E, Indiana S Co Rd 500E, Indiana N Co Rd 50E, and Indiana N Co Rd 600W.

In Fountain County, the district includes the cities of Attica, Hillsboro, Mellott, and Newton and the three townships of Davis, Logan, and Richland as well as most of the townships of Cain and Troy. The county is partitioned on the western border by Indiana State Rt 32, East Prairie Chapel Rd, and South New Liberty Rd, and on the southeastern border by North Sandhill Rd, Indiana West 260N, North Portland Arch Rd, West County Home Rd, and Indiana West 450N.

In Howard County, only the township of Honey Creek, in the far southwest corner of the county, is in the 4th Congressional District.