Defining aggregations of the poor for community health center location.

Socioeconomic indexes based on multiple criteria of education, employment, and income are constructed and applied to Los Angeles County census data closely analyzed by area. Areas are classified by socioeconomic level of their residents, and large aggregations of the indigent and other groups are identified and delineated. Minimal assumptions about the function of community health centers permit estimation of their required number and best location to serve socioeconomic groups unable to obtain adequate health care privately.