Version 1

(1) The data file comprises two record types, Record A and Record B, each with a different series of population and housing tables. Record A is presented for each geographic area and is followed by a number of B records. There is a separate B record for the total population, Spanish origin persons if present in the geographic area, and each race category in the area. The A and B records are divided into segments, each comprising 1,956 characters, which constitute the logical records of the data file. Record A contains 25 segments, 5 with population tables and 20 with housing tables. Record B has 19 segments, 11 with population tables and 8 with housing tables. To protect respondent privacy, the B record for Spanish-origin persons or a race category was omitted if certain suppression criteria were met. (2) In STF 4C, Record B is present for the total population and a maximum of 38 race, Spanish-origin, and ancestry categories. However, this abstract is limited to just seven basic categories: 1. total population, 2. Whites, 3. Blacks, 4. American Indians, Eskimos, and Aleuts, 5. Asians and Pacific Islanders, 6. persons of other races, and 7. Spanish-origin persons. (3) The data file contains 120 to 158 logical records per case and approximately 1,500 variables. The cases are sorted by geographic hierarchy.