Book 37 || The 1990 United States Census [2nd] by United States. Bureau of the Census Book 37 || The 1990 United States Census [2nd] by United States. Bureau of the Census Book 37 || The 1990 United States Census [2nd] by United States. Bureau of the Census The 1990 United States Census [2nd], conducted by the U.S. Bureau of the Census, was part of the 21st national census. This second version offered detailed and revised data regarding the U.S. population and housing as collected during the 1990 census. The census included information on demographics such as age, race, ethnicity, household composition, and income. It also provided valuable insights into the social and economic trends of the time, as well as shifts in population density across urban and rural areas. This version addressed adjustments in data collection and response accuracy, particularl...