I am Polish and I moved to Columbus and lived there for one year about twenty three years ago. I escaped after one year. The experience was very difficult, people kept asking me questions like
"So, is Poland a Russian Republic?", "Is Poland in Europe?", "Is your native language French or Spanish?", " Do Polish people have cars?", "Have they introduced TVs to Poland yet?". I could already speak good English, but I had to prove at every step that I had not come straight out of the Amazon Jungle and basically had to apologize to some people for carrying around a good quality, trendy leather handbag, as they expected a Polish person to be dressed in rags or maybe parade half-naked, like a member of an Amazonian tribal community. My American boyfriend woke me up one day to show me a garbage truck as a way of introducing me to the gifts and wonders of the western civilization....
Still, I don't want anyone to take it as criticism, as I also met many helpful and friendly people. However, generally, I felt totally isolated and lived among people who had no knowledge of Central Europe whatsoever.
I had a work permit, but it was useless, as in most places they would not offer me a job because I didn't have a social security number for some time.
As for the Polish community, I met just a few Polish people there, as far as I can remember the group was too small to form any meaningful community. We are really lucky nowadays to be able to enjoy the benefits of the Internet and get in touch with the people from our native countries living abroad. Good luck!