The U.S. resident population includes the total number of people in the 50 states and the District of Columbia. The Bureau also enumerated the residents of the Commonwealth of Puerto Rico; it's population was 3,808,610, an 8.1 percent increase over the number from a decade earlier.
The most-populous state in the country was California (33,871,648); the least populous was Wyoming (493,782). The state that gained the most numerically since the 1990 census was California, up 4,111,627. Nevada had the highest percentage growth in population, climbing 66.3 percent (796,424 people) since 1990.
Regionally, the South and West picked up the bulk of the nation's population increase, 14,790,890 and 10,411,850, respectively. This meant that the mean center of U.S. population moved to Phelps County, Missouri. The Northeast grew by 2,785,149; the Midwest, by 4,724,144.
The totals transmitted to the President of the United States were calculated by a congressionally-defined formula, in accordance with Title 2 of the U.S. Code, to reapportion among the states the 435 seats in the U.S. House of Representatives. The apportionment population consists of the resident population of the 50 states, plus the overseas military and federal civilian employees and their dependents living with them who could be allocated to a state. Each member of the House represents a population of about 647,000. The populations of the District of Columbia and Puerto Rico are excluded from the apportionment population because they do not have voting seats in the U. S. House of Representatives.
Since 1790, the first census, the decennial count has been the basis for the United States representative form of government. In 1790, each member of the House represented about 34,000 residents. Since then, the House has more than quadrupled in size, and each member represents about 19 times as many constituents.
Population breakdown
Changes in population
Reapportionment