Depending on your GPA, you may want to consider the University of South Florida. On its international student scholarship page it looks like you might get about $12k/year. It’s in a big city (so there may be non-students interested in getting involved with your project) and there are other universities nearby as potential pools of collaborators. There are 32,000 students at USF alone, so you have good odds of finding others who would be interested in your project. With the $12k scholarship your costs would probably be around $26k, as I think costs are about $38k including required insurance.
The University of Kansas is another option to consider, one that offers scholarships up to full tuition for international applicants. Tuition, room and board run around $37k before any scholarships are awarded. There are about 17k students here and I’ve heard that Lawrence is a wonderful town to live in.
University of Mississippi also offers generous international scholarships, ranging from $3900 to nearly $23,500. This university of 16,000 students costs around $35k for tuition, room & board.
U. of North Dakota probably costs about $30k for tuition, room, & board. But international students don’t seem to be excluded from the automatic scholarships, based on GPA, that go up to $14k a year. There are about 9k undergrads, so smaller than the other options, but not a small university at all.
Georgia State might be worth digging into a little. A cursory glance at its website didn’t show scholarships specifically for international students, but I didn’t do a good search of the database. One of the special things about Georgia State is its location in Atlanta, which is a very cosmopolitan city, but also has a consortium where students can take classes at any of the other universities in the consortium. Some of the universities in the consortium include Georgia Tech, Emory, Spelman, and others. So in addition to the 28k students at Georgia State, there are many more options for collaborators in the area. Tuition, room & board is about $43k before any merit aid would apply.
Portland State offers scholarships for international students ranging from $3-10k. Additionally, they have tuition remission of about $3200/term for international students who do 90 hours of presentations to local community groups. And international students are eligible for other university-wide scholarships. Tuition, room & board is about $42k here. Portland is a big city with many other universities in the area, including Reed, Lewis & Clark, U. of Portland, etc. in addition to Portland State’s 16k students. The city is a biking mecca, so you will have an easier time getting around the city than in other places that are more based on private car transportation, for those times when you do want to leave campus.
Cleveland State offers scholarships for international applicants as well, but the amounts are unclear. But the university is about $39k for tuition, room & board, books, and insurance. There are around 10k undergrads here, and it’s a 3 mile walk from Cleveland State to Case Western, where there are thousands of other potential collaborators. There are also many other universities in the area to find people who might be interested in your project.
Macalester, Carleton, & Reed are excellent colleges. Carleton doesn’t offer merit aid, I believe, and I think it would be quite challenging to get their prices to meet your budget. Plus, they’re all smaller schools so smaller pools of people to find the collaborators you desire.
Truman is a great financial safety.
One other university to consider, which would be a bit of a reach, is U. of Minnesota. It offers scholarships to international students from $10-25k, I believe. If you got the $25k amount then the U. of Minnesota would fall into your budget.