Western Illinois U
Low COA and merit. OOS is same as IS
http://www.wiu.edu/vpas/business_services/tuition/plans/u/undergrad.php
http://www.wiu.edu/student_services/scholarship/
Grad students also enjoy low rates for IS and OOS!
http://www.wiu.edu/vpas/business_services/tuition/plans/u/grad.php
For example, I saw this popular grad school major and the total tuition cost for the MS would be about $11,000…amazing deal. Don’t know if it’s available online, but if so…
University of New Mexico follow-up:
Daughter is receiving the in-state tuition rate at the university of New Mexico but also just received notice about an extra $2,500 for freshman year. We called to ask if it was financial aid, but it was not–it was merit on top of the in state rate. Said it was intended to off-set housing costs for freshman year because they are required to live on campus.
We are beyond happy. So the tuition is less than $8,000/yr AND an extra $2,500. We don’t see anything on the university’s website about it, but daughter saw a post on Facebook from another kid about getting the same extra award.
There’s this: http://admissions.unm.edu/costs-financial-aid/index.html Daughter has 23 ACT if that matters.
Valdosta State offers in state for states that border Georgia.
$8000/semester includes room and board.
Oregon State University DOES charge OOS tuition, but also offers pretty good scholarships based upon GPA to help off-set. I think my son was offered $10K (we didn’t select this school), which was nice since they do not participate in WUE.
https://admissions.oregonstate.edu/non-resident-scholarship-opportunities
hbcus:
Alcorn State
Mississippi Valley State
Jackson State
Albany State
Savannah State
Fort Valley State
Langston University, the only HBCU in Oklahoma, waives out-of-state fees at a 3.0 gpa. You can stack band/athletic scholarships with it. You can attend for less than 15,000 in a shared room (COVID permitting) or 17149 for tuition, fees, room and board, and books in a private room in the apartment-style suite.
We also have full-rides available (minimum to apply) at a 3.5 gpa and a 22 ACT.
Bumping to give this thread a little more visibility during this stage where some students may be desperately seeking last-minute options.
This post is now a wiki (editable by all members and above). I tried to update the OP with all the schools in the thread, but I may have missed some. Feel free to update!
Montclair State will wave OOS tuition for 3.0 and higher. Unfortunately you cannot stack the President Scholarship on top of that. (5K)
The best kept secret in Texas – Angelo State University.
Huge endowment, engineering and other career ready STEM programs, part of Texas Tech U system. Largest private endowment of regional schools in TX. In state tuition for scholarship recipients. Nice town with great weather.
COA is ~$18K plus another $3K for honors college students.
Lake Superior State University in the Upper Peninsula of Michigan (on border with Canada) charges the same for In-State and Out-of-State Tuition. Niche and USNews both confirm: https://www.usnews.com/best-colleges/lake-superior-state-2293/paying .
I should add that this school could be of special interest to ice hockey players and fans. Big program for hockey there!
The UP is really (and I mean really) cold. Not casual cold like regular Michigan or Buffalo, but really cold.
I don’t see the ASU out-of-state tuition adjustment available any longer when I click on the provided link. I can’t see it anywhere else either. Maybe they no longer off this?
Sure, but warmer than any N. Dakota, Minnesota, and Wisconsin schools on the list (due to Lake Superior temperature moderation). However, almost certainly more snow than all of those other locations for the same reason (Lake Superior lake effect snow). So if you like hockey and other winter activities… 
Nevermind my other reply, I did finally see the tuition adjustment on their website for OOS students with Distinguished Scholarships. Your Info is still good one year later
Yep. I grew up about 30 minutes from da UP. It’s nasty. On the flip side, winter sports are awesome.
I’m a Southerner who now spends time in the UP (and Lower Michigan)… if you are not accustomed to that weather it definitely should be a consideration. I’ve come to appreciate it, but I’m also a visitor and not living there all winter long.