You're likely being underpaid. I'm in Iowa and regularly see software devs with offers higher than that. The last company I was at, they brought an intern back with a $140k starting salary. He was making more than an "architect" who had been at the company for 16 years.
I'm not in SV either and $120k would be well below average for someone with 30 years experience in my area. Of course, "in tech" can mean a lot of things. From what I have seen, tech writers and IT help desk folk don't make nearly as much as SW developers.
That sucks, i learned JavaScript during the pandemic and make more than 120k at a corporate gig in Chicago (where salaries are certainly higher than Wichita but it's no SV). I don't even have a college degree.