This report summarizes the language background information and certain demographic characteristics of language minorities in the United States. The data were derived from the Survey of Languages, a pilot study of the non-English-language background population aged four and older sponsored by the National Center for Education Statistics as part of the July 1975 Current Population Survey of the Bureau of the Census. Thirteen percent of the population of the U.S. aged 4 and older in July 1975 lived in households in which languages other than English are spoken. There are over 25 million persons in these households. Spanish speakers constitute more than two-fifths of all speakers of other languages. Excluding speakers of Spanish, speakers of other languages are estimated to be 10 million: 1.8 million speak Italian, 1.5 million speak French, and another 1.4 million speak German. Speakers of Chinese, Greek, Japanese, Filipino languages, Portuguese, and Korean number between 100,000 and half a million each. There are 1.6 million persons in the U.S. aged 4 and older who do not speak English, three quarters of whom are adults. Fewer than half of the individuals who usually speak Spanish and French are foreign born, in contrast with speakers of other languages. (CLK)