The U.S. Census Bureau has begun to release the statistics of Summary File 2, which includes 250 population groups: the Population, 132 race groups, 78 American Indian and Alaska Native tribe categories (reflecting 39 individual tribes), and 39 Hispanic or Latino groups.

As it relates to same-sex partners, SF 2 is of limited value, since it only includes the race group of the main householder. The race group or origin of the partner of the main householder is not indicated. Hence, it is impossible to determine how many of these couples are of the same race group or origin, or interracial.
As of 6/04/2002, the following tables are available.

—White alone. —White alone or in combination with one or more other races. —Black or African American alone. —Black or African American alone or in combination with one or more other races. —American Indian and Alaska Native alone. —American Indian alone. —Alaska Native alone. —American Indian and Alaska Native alone or in combination with one or more other races. —American Indian alone or in any combination. —Alaska Native alone or in any combination. —Asian alone. —Asian Indian alone. —Bangladeshi alone. —Cambodian alone. —Chinese alone. —Taiwanese alone —Filipino alone —Hmong alone

—Native Hawaiian and Other Pacific Islander alone. —Some other race alone . —Two or more races. —Three or more races.

— Hispanic or Latino (of any race). —Mexican. —Puerto Rican. —Cuban. —Dominican (Dominican Republic). —Costa Rican —Spaniard