A profile of Trinidad and Tobago is sketched in this paper. Although they are now unified into one national whole, their histories and socioeconomic and demographic developments have differed somewhat. Thus, these aspects of the two islands are treated separately where circumstances warrant. Emphasis is placed on the nature, scope, and accomplishments of population activities in the islands. Topics and sub-topics include: location and description of the islands; population--size, growth patterns, migration, age/sex structure, rural/urban distribution, ethnic and religious composition, literacy, economic status, future trends; population growth and socio-economic development--relationships to national income, size of the labor force, agriculture, social welfare expenditures; history of population concerns; population policies; national family planning program--objectives, organization, type, operations; research and evaluation; and private efforts and foreign assistance for family planning activities. Summary statements indicate that the presence of a climate favorable to acceptance of family planning has facilitated the achievements and progress of the national family planning program. However, two areas needing intensified and further study are: (1) community motivation and education, and (2) research and evaluation. A map of the islands is drawn and statistical data, tables, and charts are given. (BL)