While the pandemic prompted a well-documented exodus to, and development of, sleepy suburban and exurban towns, the Rosslyn Business Improvement District says it has identified a different Covid migration pattern. About a quarter of Americans reported moving to cities where they could be within a 15-minute walk or bike ride of grocery stores, healthcare and parks, according to a national survey by the BID. The survey also found 41% plan on moving to be within walking or biking distance of their preferred amenities — including coffee shops, schools and gyms — in the next one to three years. That’s in...