The US Census Bureau 2015 estimate shows Washington's population has reached 7,170,351, up from 6.72 million recorded during the 2010 census. Washington is currently enjoying a healthy growth rate of 1.27%, which ranks 8th in the country.
In order to gauge any current population within Washington State, it is necessary to refer back to the last nationwide census which was carried out in 2010. At that stage, it was confirmed that there were 6,724,540 people in the state, and that represented an increase of just over 14% on the numbers declared in 2000.
Washington State Area and Population Density
Current estimates now show a population of 7.17 million in the state of Washington, and rapid growth is expected to continue. This population places Washington as the 13th most populous state in the country, but only 25th in terms of population density. Within its total area of 71,299 square miles, there is an average of 101.2 people for every square mile of Washington State territory.
Seattle is the largest city in the state with a population of 684,451, with a density of 7,962 people per square mile. The Seattle-Tacoma-Bellevue metropolitan area has a population of 3.73 million, however, and encompasses nearby cities like Kent, Tacoma, Bellevue and Everett. It accounts for more than half of the state's population. The most populated counties in Washington State are King and Pierce counties with respective populations of 2,188,649 and 876,764
Washington State Gender and Religion Statistics
The median age across the state of Washington is 37.6 years of age. In terms of the ratio of females to males, 50.1% of the population is female and 49.9% male.
In terms of preferred religions among the residents of the state, 61% of the population is affiliated with a Christian based faith, 6% are affiliated with non-Christian faiths, and 32% are not affiliated with any faith in particular.
Washington State Boundary, Census, and Statehood History
After a period when Great Britain also claimed it, Washington was definitively acquired in 1846 and was included in Oregon Territory, established in 1848. Washington became a separate territory in 1853, acquired essentially its present boundaries in 1863, and was admitted as a State on November 11, 1889.
The 1850 population is that of Clark and Lewis Counties, Oregon Territory; census coverage extended only to the southwestern part of present-day Washington. In 1860 census coverage included nearly the whole present State, and some persons in present-day northern Idaho and northwestern Montana.