As 1 of 6 regional reports supplying statistical information on Alaska's incorporated and unincorporated communities (those of 25 or more people), this report on Alaska's Bristol Bay-Aleutian Region presents data derived from the 1970 U.S. Census first-count microfilm. Organized via the 3 Bristol Bay-Aleutian census divisions, data are presented for the 43 communities of the Aleutian Islands, Bristol Bay Borough, and Bristol Bay census divisions. Presented in tabular form, data provide the following information: (1) Population Trends (1950, 1960, and 1970); (2) Race (Alaskan Native, White, and Negro); (3) Families (total and total persons in family); (4) Age Breakdowns: Total Population and Native Population (males and females from under 5 to 65 and over and median age); (5) Housing Occupancy (# of units owner occupied, renter occupied, vacant year round, seasonal, and total); (6) Type of Housing Structure-Year Round Units (# of 1 unit structures, 2 or more units, and mobile homes); (7) Persons Per Unit (# of persons and units and average); (8) Rooms Per Unit (# of rooms and units and average); (9) Persons Per Room (1.00 or less to 1.51 or more); (10) Plumbing Facilities: Year Round Units (# with all facilities and # lacking 1 or more facilities); (11) Value of Owner Occupied Units ($5,000 to $50,000); (12) Toilet Facilities: Year Round Units (private, shared, and no flush toilets). (JC)