Have them travel and find where they want to live. When I first started working (gen. X male), I was a bit dismayed by both corporate workplace culture and living in a part of the country where there were no young professionals to date or befriend. So I tried traveling to other parts of the US to find where the other young 20's and 30's were living. Took several years. And they are not found in significant numbers in many areas of the country, as one might guess. Most areas are majority middle aged people and families, which isn't much fun to someone who is young and unmarried.
Have them travel and find where they want to live. When I first started working (gen. X male), I was a bit dismayed by both corporate workplace culture and living in a part of the country where there were no young professionals to date or befriend. So I tried traveling to other parts of the US to find where the other young 20's and 30's were living. Took several years. And they are not found in significant numbers in many areas of the country, as one might guess. Most areas are majority middle aged people and families, which isn't much fun to someone who is young and unmarried.