Colorado State has automatic merit scholarships based on GPA, so I expect the total cost would be a bit under $50k. Here’s the scholarship page. Green and Gold Scholarships for Nonresidents | Admissions | Colorado State University
UC Davis would be expected to cost about $85k/year.
Most public universities don’t offer need based financial aid to nonresidents, so if family income is around poverty level (as stated in original post), the best choices would likely be either in-state with financial aid, or private universities that offer financial aid.