NEW DELHI  If it’s Monday, it must be Romania  and Finland and Minnesota.

A soaring economy and crumbling trade barriers are making India a “must visit” destination for foreign politicians and executives. The crush of visitors, often first-timers but also companies seeking to expand their existing operations here, lands daily. They all hope to sign deals, find local partners, sell their wares or just soak up the contradictions that characterize the world’s largest democracy, a singular melding of chaos and opportunity.

Bald demographics make India impossible to ignore, and the slowdown in the United States economy adds to its appeal. About half of the country’s 1.1 billion people are under 25, and its rapidly expanding middle class is already estimated to be as large as the entire population of the United States. A rocketing stock market and a fast-growing class of the superrich add to its appeal.

Trade experts compare the rising tide of interest to the wave of outsiders who flooded China a few years ago. This year, Felipe Calderón Hinojosa became the first Mexican head of state to visit India in 22 years. Angela Merkel, the chancellor of Germany, President Luiz Inácio Lula da Silva of Brazil, and Henry M. Paulson Jr., the United States Treasury secretary, have all paid their respects.

But official delegations are arriving from unexpected corners of the globe, too. On a recent typical Monday in New Delhi, the government played host to Minnesotan businessmen led by Gov. Tim Pawlenty, a Romanian delegation led by the senior counselor in the ministry of small and medium-size companies, and Finns led by the minister of trade and development.