Got curious and checked a few days ago, then was looking around and 4WOR magazine Jan. issue has the Midwest lift laws in one spot. I thought there was a post somewhere of these on the forum but couldn't find it. Here's some of ours for Ohio:
Ohio
(Ohio Administrative Code, CHAP. 4501)
SUMMARY: Ohio is specific yet liberal concerning suspension modifications. It defines truck as any vehicle "designed and used to carry property and having a gross vehicle weight rating of 10,000 pounds or less." Suspension stipulations are directed primarily toward "low-brow" trucks: "No person shall modify any motor vehicle registered in this state in such a manner as to cause the vehicle body or chassis to come in contact with the ground, expose the fuel tank to damage from collision, or cause the wheels to come in contact with the body under normal operation, and no person shall disconnect any part of the original suspension system of the vehicle to defeat the safe operation of that system including the installation of inverted, altered, or modified suspension system component parts which results in elevation of the height of the vehicle bumper or frame unit which is not in compliance with this chapter" [§4501-43-03(B)]. Body lifts are limited to 4 inches. Additionally, bumper parameters are defined. §4501-43-03(C) specifies that all vehicles originally equipped with bumpers must retain same in order to be licensed.
.Further, "The horizontal bumper shall be at least 4.5 inches in vertical height, centered on the vehicle's centerline, and extend no less than the width of the respective wheel track distances. Bumpers shall be horizontal load-bearing bumpers and attached to the vehicle frame to effectively transfer impact when engaged" [§4501-43-04(A)]. Finally, Ohio uses bumper heights to determine allowable modifications.
Body Lifts [§4501-43-03(D)]: "No person shall operate upon a street or highway any passenger car, multipurpose passenger vehicle, or truck registered in this state if the difference in height between the body floor and the top of the frame exceeds four inches."


BUMPER HEIGHTS [§4501-43-04(B)]
4,500 lb GVWR or less 24 in. front, 26 rear
4,501-7,500 lb GVWR 27 in. front, 29 rear
7,501-10,000 lb GVWR 28 in. front, 31 rear


Source
Ohio Administrative Code
codes.ohio.gov/oac/4501-43

Also lists : Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, North Dakota, Oklahoma and Wisconsin.

I guess S. Dakota doesn't count!

nice state

_________________
'02 Liberty Limited 4x4
-Selec Trac
-MTR's 245/75-16
-Rock Lizard Super Skink Sliders(custom)
-Engine skid, Skidrow Transmission skid
-4" Lift - JBA 4.5 Gen A-arms
Installed@165,920k
Pilot lights on cowl
Engine replacement at 175k