Below you'll find a full list of free state maps available from most state tourism departments. As a backup, I've also linked to any state Department of Transportation that give away free maps, both online or physically mailed to your house.
Almost every state offers a full map in their visitor's guide. For the DOT links, virtually all of them offer multiple free, highly detailed online .pdfs of their highways, roads, and other travel methods.
On top of that, many DOTS (I'd guesstimate 40ish) also have some sort of “click here to order a physical map” link. If you're looking for a highway map you can stash in your car's glovebox, this is the link you want to look for on your state's DOT site. You might have to click “highway map” or “road map” before the order form will appear. You might even want to click “Maps” in the menu bar and do a fresh search, because like I said, it's an option for most states!
If you manage to find a dot map or order form that I missed, please let me know. Here's to never getting lost again!
Free Delaware State Map – The only thing I know about Delware is that Vice President Biden lives there and it's the only state without a commercial airport. No wonder people are looking for highway maps here! (de dot map)
Free Florida State Map – When I first made this list in 2009, there was an “Authentic Florida Expert” everywhere on the site. She looked like a stereotypical grandma, but now she's nowhere to be seen. Uh oh, you know what that means… (fl dot map)
Free Idaho State Map – Not only do they have free maps, but Idaho even offers a free children's brochure. It's just a single page that says “hope you like potatoes,” but at least it's something. (id dot map)
Free Illinois State Map – Every time I visit Illinois, I lean into their state name and always drop the S at the end of words. It drives my friends bananas. (il dot map)
Free Indiana State Map – Indiana earns the distinction of being the first state site I've seen with a prominently displayed “free things to do here!” section. I guess that's what it takes to get people to come to anywhere in Indiana outside of Pawnee. (in dot map)
Free Maine State Map – While signing up they want you to “be sure to indicate which regions of Maine and activities interest you.” Uhhh, does eating lobster and telling people I've been to Maine count as interests? (me dot map)
Free Maryland State Map – I can't tell you the number of times the state of Maryland has screwed me over, so visit with caution. I hated Baltimore years before The Wire ever aired. (md dot map)
Free Montana State Map – They offer a free winter guide in addition to the state map, but I can give you said guide right here. Step 1: stay inside. Step 2: go outside once spring arrives. (mt dot map)
Free Nebraska State Map – Nebraska wants us to “share the road trip.” See, even their own tourism board thinks the best part of Nebraska is driving away from it! (ne dot map)
Free Rhode Island State Map – Their site says “put down that spreadsheet, tear yourself away from your inbox for a second, and fill out this form.” Uhhh … RUN, THEY'RE WATCHING US THROUGH OUR COMPUTERS!! (dot maps)
Free South Dakota State Map – Ok, wait a minute here. South Carolina's slogan: Smiling Faces, Beautiful Places. South Dakota's slogan: Great Faces, Great Places. It's like South Dakota wasn't even trying! (sd dot map)
Free Utah State Map – I'm extremely disappointed Utah removed the separate checkbox for German visitors, as it completely ruined my Utah being a vacation mecca for Germans joke. To make matters Üßer worse, their DOT has removed the option for ordering highway maps! The best I can do is this high-res highway map for online viewing. (ut dot map)
Free Vermont State Map – I'm not sure how all the seasonal maps differ from each other, but it's nice knowing that I have so many options with them. (vt dot map)