County Highway 21, Plainfield
- County Highway 21 Uebler, Gene Jr
- County Highway 21 Hubiak, Michael
- County Highway 21 Rogers Irrevocable Trust
- County Highway 21 Fraley, Jason
- County Highway 21 Miller, Bernard H
- County Highway 21 Tripoli, Jeffrey A
- County Highway 21 Gaydos, Michael R Jr
- County Highway 21 Laraby, Timothy J
- County Highway 21 Southard, Clinton F
- County Highway 21 Wheelock, James Jr
- County Highway 21 Saunders Irrevocable Trust, Wendell & Ruth
- County Highway 21 Kearney Revocable Trust Shawn M
- County Highway 21* Duh, David
- County Highway 21* Duh, David
- 101 County Highway 21 Roers Irrevocable Trust
- 168 County Highway 21 Bowee, Jamie J
- 203 County Highway 21 Monette Michael J
- 211 County Highway 21 Wisehart, Alyssa R
- 228 County Highway 21 Hubiak, Michael
- 236 County Highway 21 Hubiak, Michael
- 263 County Highway 21 Beach, Richard L Jr
- 278 County Highway 21 Evans, Rodney J
- 285 County Highway 21 Cooper John C
- 362 County Highway 21 Pacca, Steven
- 415 County Highway 21 Davis, James J
- 431 County Highway 21 Lamb, Lenelle L
- 442 County Highway 21 Noseworthy, Kirk E
- 451 County Highway 21 Burdick, Carl E
- 459 County Highway 21 Brown, Donald
- 471 County Highway 21 Sargent, Jeff
- 492 County Highway 21 Hammill, Lawrence A Jr
- 503 County Highway 21 Bateman, Daniel E Jr
- 521 County Highway 21 Tripoli, Michael J
- 533 County Highway 21 Tripoli, John J
- 568 County Highway 21 Dorie, Lawrence P
- 573 County Highway 21 Miller, Jennifer
- 577 County Highway 21 Tripoli, Lisa
- 597 County Highway 21 Tripoli, Jeffrey A
- 627 County Highway 21 Brown, Donald J
- 682 County Highway 21 Bevins, Mary E
- 698 County Highway 21 Fraley, Jason
- 723 County Highway 21 King, Tyler
- 735 County Highway 21 Messner, John
- 805 County Highway 21 Jennison, Chad M
- 813 County Highway 21 Wheelock, James R
- 825 County Highway 21 Morelle Irrevocable Trust
- 878 County Highway 21 Gilbert, Tom S
- 977 County Highway 21 Bond Bradley A
- 1128 County Highway 21 Bateman, Daniel E Jr
- 1133 County Highway 21 Bateman, Daniel E Jr
- 1138 County Highway 21 Parry Thomas S