We document intermarriage patterns between Hispanics and non-Hispanic whites over the 1990 to 2000 period in 155 U.S. metropolitan areas and evaluate the effects of spatial, cultural, and economic assimilation on interdecade changes in intermarriage. We hypothesize that changes in Hispanic-white intermarriage during the 1990s reflect changing spatial, cultural, and economic assimilation among U.S. Hispanics. (Author abstract)