Census Counts											
State	1900	1910	1920	1930	1940	1950	1960	1970	1980	1990	2000
United_States	"76,212,168"	"92,228,496"	"106,021,537"	"123,202,624"	"132,164,569"	"151,325,798"	"179,323,175"	"203,211,926"	"226,545,805"	"248,709,873"	"285,230,516"
Western States	"4,091,349"	"6,825,821"	"8,902,972"	"11,896,222"	"13,883,265"	"19,561,525"	"27,194,165"	"33,735,250"	"41,805,948"	"51,127,810"	"61,359,463"
Arizona	"122,931"	"204,354"	"334,162"	"435,573"	"499,261"	"749,587"	"1,302,161"	"1,770,900"	"2,718,215"	"3,665,228"	"5,130,632"
California	"1,485,053"	"2,377,549"	"3,426,861"	"5,677,251"	"6,907,387"	"10,586,223"	"15,717,204"	"19,953,134"	"23,667,902"	"29,760,021"	"33,871,648"
Colorado	"539,700"	"799,024"	"939,629"	"1,035,791"	"1,123,296"	"1,325,089"	"1,753,947"	"2,207,259"	"2,889,964"	"3,294,394"	"4,301,261"
Idaho	"161,772"	"325,594"	"431,866"	"445,032"	"524,873"	"588,637"	"667,191"	"712,567"	"943,935"	"1,006,749"	"1,293,953"
Montana	"243,329"	"376,053"	"548,889"	"537,606"	"559,456"	"591,024"	"674,767"	"694,409"	"786,690"	"799,065"	"902,195"
Nevada	"42,335"	"81,875"	"77,407"	"91,058"	"110,247"	"160,083"	"285,278"	"488,738"	"800,493"	"1,201,833"	"1,998,257"
New Mexico	"195,310"	"327,301"	"360,350"	"423,317"	"531,818"	"681,187"	"951,023"	"1,016,000"	"1,302,894"	"1,515,069"	"1,819,046"
Oregon	"413,536"	"672,765"	"783,389"	"953,786"	"1,089,684"	"1,521,341"	"1,768,687"	"2,091,385"	"2,633,105"	"2,842,321"	"3,421,399"
Utah	"276,749"	"373,351"	"449,396"	"507,847"	"550,310"	"688,862"	"890,627"	"1,059,273"	"1,461,037"	"1,722,850"	"2,233,169"
Washington	"518,103"	"1,141,990"	"1,356,621"	"1,563,396"	"1,736,191"	"2,378,963"	"2,853,214"	"3,409,169"	"4,132,156"	"4,866,692"	"5,894,121"
Wyoming	"92,531"	"145,965"	"194,402"	"225,565"	"250,742"	"290,529"	"330,066"	"332,416"	"469,557"	"453,588"	"493,782"

Population Projections							
State	2000	2005	2010	2015	2020	2025	2050
United_States	"274,635,000"	"285,980,000"	"298,056,500"	"310,133,000"	"322,590,500"	"335,048,000"	"395,461,000"
Western states	"59,502,000"	"63,561,000"	"68,553,000"	"73,545,000"	"78,974,000"	"84,403,000"	"109,304,000"
Arizona	"4,798,000"	"5,230,000"	"5,519,000"	"5,808,000"	"6,110,000"	"6,412,000"	"8,026,000"
California	"32,521,000"	"34,441,000"	"37,907,000"	"41,373,000"	"45,329,000"	"49,285,000"	"66,049,000"
Colorado	"4,168,000"	"4,468,000"	"4,650,500"	"4,833,000"	"5,010,500"	"5,188,000"	"6,208,000"
Idaho	"1,347,000"	"1,480,000"	"1,551,000"	"1,622,000"	"1,680,500"	"1,739,000"	"2,131,000"
Montana	"950,000"	"1,006,000"	"1,037,500"	"1,069,000"	"1,095,000"	"1,121,000"	"1,292,000"
Nevada	"1,871,000"	"2,070,000"	"2,124,500"	"2,179,000"	"2,245,500"	"2,312,000"	"2,753,000"
New Mexico	"1,860,000"	"2,016,000"	"2,158,000"	"2,300,000"	"2,456,000"	"2,612,000"	"3,364,000"
Oregon	"3,397,000"	"3,613,000"	"3,802,500"	"3,992,000"	"4,170,500"	"4,349,000"	"5,301,000"
Utah	"2,207,000"	"2,411,000"	"2,540,500"	"2,670,000"	"2,776,500"	"2,883,000"	"3,559,000"
Washington	"5,858,000"	"6,258,000"	"6,658,000"	"7,058,000"	"7,433,000"	"7,808,000"	"9,758,000"
Wyoming	"525,000"	"568,000"	"604,500"	"641,000"	"667,500"	"694,000"	"863,000"

Sources:
"Census Counts:  U.S. Census Bureau, decadal census counts.  Accessed from http://www.census.gov, March 2001"
"Projections:  U.S. Census Bureau, Population Projections Program, Series A projections.  Accessed from http://www.census.gov/population/www/projections/stproj.html, March 2001. "
"Notes:  The numbers for 2010, 2020, and 2050 are our calculations based on published Census Bureau projections. 2010 and 2020 are averages of 2005, 2015 and 2025 projections."
"For 2050, we added the same number of new people from 2025 to 2050 that the Census Bureau projects for the years 2000 to 2025."
"The 2000 projection is given here because it was used in our development density projections, which were made before the 2000 census became available."