This statistical profile provides current demographic data for Washington State and is also broken down by counties, incorporated cities, and towns. Fifteen tables show population figures; components of population change; housing units by structure type; annexations, incorporations and municipal boundary changes; growth of households; estimates of the population over age 65; institutional residents; armed forces personnel; fertility rates; marriages and divorces; county population estimates and forecasts. The report also includes an analysis of population and housing trends since 1980. Since that time, the state population has increased by about 349,000, from 4,132,353 in 1980 to 4,481,100 in 1987. Most of the increase was seen in the state's largest counties. The state's rate of growth is somewhat slower than that measured during the 1970s. About 27% of the population increase, or about 94,000 people, can be attributed to net migration. Within the past seven years, municipalities have annexed more than 104 square miles, a 10% increase in the corporate-limit area. Since 1980, the number of Washington households has grown at an average annual rate of 1.8%, while the population has grown at a rate of 1.2%. This growth of households in the context of a much slower population growth is partly explained by the longtime trend of decreasing household size. The number of members per household in 1960 was 3.09. By 1980, it had dropped to 2.61 and in 1987 the estimate is 2.50. The report links migration to the state economy. The increase in nonmanufacturing jobs, relative to manufacturing, is expected to produce slower but more stable employment growth. (TES)