Population
As of 2005, Colorado has an estimated population of 4,665,177, which is an increase of 63,356, or 1.4%, from the prior year and an increase of 363,162, or 8.4%, since the year 2000. This includes a natural increase since the last census of 205,321 people (that is 353,091 births minus 147,770 deaths) and an increase due to net migration of 159,957 people into the state. Immigration from outside the United States resulted in a net increase of 112,217 people, and migration within the country produced a net increase of 47,740 people.
According to estimates made in 2004, Colorado's population will increase to 7,150,000 by 2030 [3]. The largest increases are expected along the Front Range, especially in the Denver-Aurora metropolitan area.
As of 2004, 441,000 foreign-born persons (9.7% of the population) live in the state, including an estimated 144,000 illegal aliens (3.1% of the state population).