West Coast USA. Besides that, the only other one I know of is Riverside Expressway, (Which is tiny) Are you looking for town maps? (like East Coast USA) there is the great map Tennessee Roane by @bob.blunderton, but that mod requires a beefy computer.
This has been said already, but I'm gonna just say it again and claim I said it first when I really didn't. (For the memes) tseW tsaoC ASU
Forums>Maps>Los Injurus (by myself, not out yet except to Patreon backers, who get updates every 2~4 weeks). See most recent pics if you'd like something to look at. It even has an abandoned mall that you can drive in that's TWO levels, no muzak yet though, so bring your own Vaporwave ... It also has it's own subway system (two miles with two identical stations in place, and a third station that's sunken into the ground a bit that's mostly done but needs a little move-stuff-around-a-bit magic). It's got a few blocks built up full nicely already and a few miles of highway with interchanges re-done (5 miles??, of the 45 miles that come with the map that are already done). It's got a lot of fun packed into it for what it is thus far and will have much, much, MUCH more. https://www.beamng.com/threads/a-new-city-map-los-injurus.57055/ Check out this page, and also look at the last few pages of posts as I haven't updated the pictures for October's progress with the abandoned mall yet, but you can see them on the last 2~4 pages. There's also Los Beamos by someone else that's rather new and not done yet, and an old Generic City map if it still loads up that is. There's also an unfinished port of Burnout's Paradise City map coming to BeamNG if the guy ever gets it to run better. It may happen. Roane County Tennessee is absolutely monstrous in size, it's rather humongous to be honest, almost too big to be of any use, but if you like driving for hours on all kinds of different roads and don't mind that it'll still take me a few more YEARS to finish, go ahead and check it out, there's 193+ miles of roads in that map and jumps galore, they're everywhere. Roane County TN is still the biggest map in BeamNG.drive, as no one should ever attempt to make a map bigger than that one, or even anywhere near that big as it's very hard to work with them. You must have 8GB or more to run Roane County, and you will easily surpass your free RAM amount if you have 8GB in the system, if you use AI cars, so please be mindful of how much RAM you're using if you try this map. "To whom much is expected, much is given", though. AI works pretty well though normally, as good as to be expected, and can be good for chases - very very LONG chases. Heck, spawning an AI car in a random spot, and then trying to even find it can take a very long time. I spent well beyond 2500 hours (lost count long ago) on this map so by all means if you have the computer, DO check it out, but turn off reflections, SSAO and/or shadows if performance is bad. At the default spawn is the worst performance, go figure. I've also done other maps like Nevada Interstate, but that's mostly a desert (and a VERY little village) plus a circut-track styled US highway that doesn't know it's not just a fancy looking race-track, and Tail of The Dragon (Deal's Gap) which is 12 mile a snaking road up a mountain. If you like Tail of The Dragon, you'll also like the Pikes Peak (that I didn't make) in it's various rendition floating around on this website. Both of these maps run pretty well but turn off Reflections & SSAO (and also turn off shadows on Tail of The Dragon due to 65536 billion trees) if things get slow. AI works wonderful on Tail of The Dragon though, lane-minder and all. Nevada also has fairly good AI though it might bug out in one or two spots, give it a shot and see how it works. It's an old map - my first one - but it's a labor of love and it shows. There's also Garfield Heights which just saw an update, not quite done, but there's a lot of suburban stuff jammed into a small space. I believe AI should work fine here too. You can get to my map resources by viewing my profile, I believe. It might be on the left on the profile page, just have a look around or use search.