The list includes Issei (一世, "first generation") Japanese-born immigrants from Japan, and those who are multigenerational Japanese Americans. Cities considered to have significant Japanese American populations are large U.S. cities or municipalities with a critical mass of at least 1.0% of the total urban population; medium-sized cities with a critical mass of at least 2.0% of the total population; smaller communities in the continental United States with a critical mass of at least 2.5% of the total population; and smaller communities in Hawaii with a critical mass of at least 10.0% of the total population.