Various links to useful state and county highway maps for researching highways and communities. Note to other users: many of these links were added years ago and may be out of date.
- Alabama county maps
- Arkansas county highway maps
- Colorado county highway maps
- Connecticut county highway maps
- Florida county highway maps
- Georgia county highway maps
- Illinois county, city and township highway maps
- Indiana county highway maps, from state map
- Iowa county highway maps
- Kansas county highway maps
- Kentucky county highway maps
- Louisiana parish highway maps
- Maryland grid maps
- Michigan county highway maps
- Minnesota county highway maps, with estimated community populations
- Mississippi county highway maps
- Missouri county highway maps
- Montana county highway maps
- Nebraska county highway maps
- Nevada quad maps
- New Jersey county highway maps
- North Carolina county highway maps
- North Dakota county highway maps
- Ohio state highway map with county sections
- Oklahoma county highway maps
- Oregon county highway maps
- Pennsylvania county highway maps
- Rhode Island state highway map
- South Carolina county highway maps
- South Dakota county highway maps
- Tennessee county highway maps
- Texas County Grid Map search
- Utah county highway maps
- Vermont town highway maps
- Virginia state highway map sections and independent city maps
- Washington state highway map sections, with index of communities
- West Virginia county highway maps
- Wisconsin county highway maps