WASHINGTON

SOON after President Obama places his hand on the Lincoln Bible on Monday, he will join lawmakers for a luncheon of steamed lobster, hickory-grilled bison and New England chowder in the Capitol’s ornate Statuary Hall.

Meanwhile, in the trendy corridors of this city, the Good Stuff Eatery on Capitol Hill will be serving its signature Prez Obama Burger (with applewood bacon and Roquefort cheese) and its Michelle Melt turkey burger (free range, of course, on a whole wheat bun), the staff at the Boundary Road restaurant on H Street Northeast will be pouring craft beers from Baltimore and Brooklyn, and at the U Street Music Hall, the rock music will be playing long after the swearing-in is over.

None of these places existed before 2008.

That was the year when Barack Obama won his first presidential election and started putting together an administration that would soon replace that of President George W. Bush. And for many of Mr. Obama’s young supporters, this second inauguration — and its revelries — are symbols of the transformation of the nation’s capital into a younger and livelier city.

Long viewed as a stodgy, early-to-bed town, Washington over the past four years has become a mecca for young professionals who have been drawn to its blooming economy and its revitalized urban core. Once-neglected stretches of the city now bustle with bars, restaurants and coffee shops.