My education is a Pd.D. in Mathematics. I am employed in academics, tenured. The job was wrong for me from the start
You didn't give a lot of clues on what you would like to do. I have a BS in mathematics and god knows I didn’t want to teach or go down the path of a mathematical stats job. However, you did state it was the environment that you are in that really hurts the most. I would consider moving.
If you want to stay in mathematics, the Fed gov hires about 70% of the mathematician majors. You can apply on USAjobs DOT gov. Especially around the DC area.
If you want to change careers, I liked computers myself and got my foot in the door with IT after getting my CompTIA A+ & Sec+ exams (couple of weeks of studying & then taking the exams). Having both of those might help get a foot in the door with an entry level IT helpdesk position. The IT track is more hands on and learning new ideas/concepts. Seems pretty quick to become an expert with lots of options the more experience that you obtain.