As part of a community survey of mental health needs, respondents were asked to pinpoint areas high in need on a map of the catchment area. Knowledgeable personnel in agencies dealing with community problems were surveyed. Results indicated that map surveys can be useful in locating high-need census tracts, as evidenced by convergence with an independent service-utilization-based index of mental health need. However, respondents did not differentiate between need areas in terms of ratings on specific community problems.