Irish-American population: 19.3% It's little surprise that the home of the Kennedys and the Boston Celtics is America's most Irish city, with nearly one resident in five tracing their lineage back to the Emerald Isle. "Boston is basically a kind of home away from home for people from Ireland," says the Irish Cultural Centre's McLaughlin, who's originally from Donegal. McLauglin's group holds Irish-themed classes, a Celtic day camp for kids and a large Irish Festival each June. A host of other local organizations -- from the Eire Society of Boston to Comhaltas Ceoltoiri Eireann (Gaelic for "Gathering of Musicians of Ireland") -- also sponsor lectures, concerts or charitable endeavors. Additionally, athletes can join the Boston Irish Wolfhounds rugby club or other local teams that play traditional Gaelic sports. "Someone who's from Ireland can feel right at home here," McLaughlin says. Unfortunately, immersing yourself in Boston's Irish culture will cost you a fair amount of airgead ("money" in Gaelic). Zillow.com estimates median Boston home values rose 4.8% over the past year to hit $319,500 -- the highest price for any of the five U.S. cities with the largest Irish-American populations. If that doesn't put you off, Zillow lists more than 2,000 Hub properties for sale.