I previously worked as a case manager. Which does a lot of tasks similar to a social worker, but I wasn't a social worker. For my job specifically I worked in homes, schools, and communities with my clients.
Social workers can be found in a lot of different places. Here's a general list of places you might find a social worker:schools, hospitals, nursing homes, child welfare agencies, military bases, corrections facilities, and substance abuse clinics. It's important to keep in mind that where you live or where you want to work might not have social workers in every one of those locations I previously listed. The easiest example for me is in the town that I live in their school system does not employ any social workers, but the school district just north of us does in fact employ social workers. I wish you the best Rachel!