Payvand: Washington -- Iranian-Americans are far more numerous in the United States than census data indicate and are among the most highly educated people in the country, according to research by the Iranian Studies Group, an independent academic organization, at Massachusetts Institute of Technology (MIT).

The group estimates that the actual number of Iranian-Americans may top 691,000 -- more than twice the figure of 338,000 cited in the 2000 U.S. census. According to the latest census data available, more than one in four Iranian-Americans holds a master's or doctoral degree, the highest rate among 67 ethnic groups studied.

Iranian-Americans also contribute substantially to the U.S. economy By Phyllis McIntosh, Washington File Special Correspondent