The data presented in this report were compiled from responses to questions regarding language usage and education that were included in the Current Population Survey conducted in July 1975 by the Bureau of the Census. This is an advance report and is to be followed by a more detailed Census Bureau report on the same subject. Data are reported for the following areas: usual language spoken by persons four years old and over; usual language spoken in households; second language spoken by persons four years old and over; second language spoken in households; age distribution of the population in various language groups; difficulty with English experienced by persons for whom English is not the usual language; and school enrollment status of those reporting difficulty with English. The data indicate that 90% of United States residents have no second language and that Spanish is the second most widely used language in the United States, following English. Of the persons four years old and over for whom English was not reported as the usual language, approximately 60% reported difficulty in speaking or understanding English. (GW)