Census Data
| State |
FIPS |
1900 |
1910 |
1920 |
1930 |
1940 |
1950 |
1960 |
1970 |
1980 |
1990 |
2000 |
| United States |
0 |
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 |
4000 |
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 |
6000 |
1,485,053 |
2,377,549 |
3,426,861 |
5,677,861 |
6,907,387 |
10,586,223 |
15,717,204 |
19,953,134 |
23,667,902 |
29,760,021 |
33,871,648 |
| Colorado |
8000 |
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 |
16000 |
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 |
30000 |
243,329 |
376,053 |
548,889 |
537,606 |
559,456 |
591,024 |
674,767 |
694,409 |
786,690 |
799,065 |
902,195 |
| Nevada |
32000 |
42,335 |
81,875 |
77,407 |
91,058 |
110,247 |
160,083 |
285,278 |
448,738 |
800,493 |
1,201,833 |
1,998,257 |
| New Mexico |
35000 |
195,310 |
327,301 |
360,350 |
423,317 |
531,818 |
681,187 |
957,023 |
1,016,000 |
1,302,894 |
1,515,069 |
1,819,046 |
| Oregon |
41000 |
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 |
49000 |
296,749 |
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 |
53000 |
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 |
56000 |
92,531 |
145,965 |
194,402 |
225,565 |
250,742 |
290,529 |
330,066 |
332,416 |
469,557 |
453,588 |
493,782 |
Source: U.S. Census Bureau, decadal census counts.
Accessed from http://www.census.gov, March 2001
Population Projections
| State |
FIPS |
2005 |
2010 |
2015 |
2020 |
2025 |
| United States |
0 |
285,980,000 |
298,056,500 |
310,133,000 |
322,590,500 |
335,048,000 |
| Western States |
  |
63,561,000 |
68,553,000 |
73,545,000 |
78,974,000 |
84,403,000 |
| Arizona |
4000 |
5,230,000 |
5,519,000 |
5,808,000 |
6,110,000 |
6,412,000 |
| California |
6000 |
34,441,000 |
37,907,000 |
41,373,000 |
45,329,000 |
49,285,000 |
| Colorado |
8000 |
4,468,000 |
4,650,500 |
4,833,000 |
5,010,500 |
5,188,000 |
| Idaho |
16000 |
1,480,000 |
1,551,000 |
1,622,000 |
1,680,500 |
1,739,000 |
| Montana |
30000 |
1,006,000 |
1,037,500 |
1,069,000 |
1,095,000 |
1,121,000 |
| Nevada |
32000 |
2,070,000 |
2,124,500 |
2,179,000 |
2,245,500 |
2,312,000 |
| New Mexico |
35000 |
2,016,000 |
2,158,000 |
2,300,000 |
2,456,000 |
2,612,000 |
| Oregon |
41000 |
3,613,000 |
3,802,500 |
3,992,000 |
4,170,500 |
4,349,000 |
| Utah |
49000 |
2,411,000 |
2,540,500 |
2,670,000 |
2,776,500 |
2,883,000 |
| Washington |
53000 |
6,258,000 |
6,658,000 |
7,058,000 |
7,433,000 |
7,808,000 |
| Wyoming |
56000 |
568,000 |
604,500 |
641,000 |
667,500 |
694,000 |
Source: U.S. Census Bureau, Population Projections Program, Series A projections.
Accessed from http://www.census.gov/population/www/projections/stproj.html, March 2001.