Colorado
As of the census of 2000, there were 4301261 people, 1658238 households, and 1084461 families living in the state. The population density was 41.5 people per square mile (16.02/kmē), it would be the 14th least densely populated state in the U.S. state of America. There were 1808037 housing units at an average density of 17.4 per square mile (6.72/kmē). It has an average household size was 2.53 persons, and the average family size was 3.09 persons. In the state the population was distributed as follows: 25.6% under the age of 18, 10% from 18 to 24, 32.6% from 25 to 44, 22.2% from 45 to 64, and 9.7% who were 65 or older. For every 100 females there were 101.4 males. For every 100 females age 18 and over, there were 100 males. The median age is 34.3 years, The median age of males and females living in Colorado was 33.2 and 35.4 years respectively. According to July 2008 Census Bureau estimates, the population of the state is 4301261, The racial makeup of the state was 3560005 White, 165063 Black or African American, 44241 American Indian, 95213 Asian, 4621 Native Hawaiian, 122187 from two or more races and 309931 Ohter races.
The median income for a household in the state was $47203, it is tenth wealthiest state by median household income in United States. The median income for a family in the state was $55883, it would be the ninth highest state by median family income in the U.S. state of America. The per capita income for the state was $24049, it would be the fifth highest state by per capita income in the U.S. state of America. The median income of state was $25318, Median income for males is $30648, compared with $20322 for females. As of 2008, the gross domestic product (GDP) is about $248.6 billion, it is the 20th wealthiest state in terms of gross domestic product. Colorado is responsible for 1.75 percent of the United States gross domestic product (GDP). Its Per capita personal income in 2008 was $41102.
In 2000, 1166004 pupils and students, of which 50.68% are male and 49.32% are female, 27.11% of the total population, are in the education system. Of which, percentage of enrollment student are in, 6.78% nursery or pri school, 5.3% kindergarten, 43.15% elementary school, 20.52% high school and 24.26% College graduate school.
| Rank | County | Total Area mi2 | Land Area mi2 | Water Area mi2 | Population | Density mi2 | Per capita Income | House hold Income | Family Income |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Adams County | 1197.71 | 1191.93 | 5.78 | 363857 | 305.3 | 19944 | 47323 | 52517 |
| 2 | Alamosa County | 723.53 | 722.74 | 0.78 | 14966 | 20.7 | 15037 | 29447 | 38389 |
| 3 | Arapahoe County | 805.43 | 803.14 | 2.29 | 487967 | 607.6 | 28147 | 53570 | 63875 |
| 4 | Archuleta County | 1355.48 | 1350.22 | 5.26 | 9898 | 7.3 | 21683 | 37901 | 43259 |
| 5 | Baca County | 2557.09 | 2555.72 | 1.37 | 4517 | 1.8 | 15068 | 28099 | 34018 |
| 6 | Bent County | 1541.12 | 1513.9 | 27.22 | 5998 | 4 | 13567 | 28125 | 34096 |
| 7 | Boulder County | 751.37 | 742.46 | 8.91 | 291288 | 392.3 | 28976 | 55861 | 70572 |
| 8 | Chaffee County | 1015.01 | 1013.45 | 1.55 | 16242 | 16 | 19430 | 34368 | 42043 |
| 9 | Cheyenne County | 1781.37 | 1781.35 | 0.02 | 2231 | 1.3 | 17850 | 37054 | 44394 |
| 10 | Clear Creek County | 396.46 | 395.45 | 1.01 | 9322 | 23.6 | 28160 | 50997 | 61400 |
| 11 | Conejos County | 1290.87 | 1287.22 | 3.65 | 8400 | 6.5 | 12050 | 24744 | 29066 |
| 12 | Costilla County | 1230.44 | 1227.1 | 3.34 | 3663 | 3 | 10748 | 19531 | 25509 |
| 13 | Crowley County | 800.33 | 788.99 | 11.34 | 5518 | 7 | 12836 | 26803 | 32162 |
| 14 | Custer County | 739.9 | 738.89 | 1.02 | 3503 | 4.7 | 19817 | 34731 | 41198 |
| 15 | Delta County | 1148.52 | 1142.11 | 6.42 | 27834 | 24.4 | 17152 | 32785 | 37748 |
| 16 | Denver County | 154.94 | 153.35 | 1.59 | 554636 | 3616.8 | 24101 | 39500 | 48195 |
| 17 | Dolores County | 1068.09 | 1066.97 | 1.13 | 1844 | 1.7 | 17106 | 32196 | 38000 |
| 18 | Douglas County | 842.75 | 840.11 | 2.64 | 175766 | 209.2 | 34848 | 82929 | 88482 |
| 19 | Eagle County | 1691.8 | 1687.88 | 3.93 | 41659 | 24.7 | 32011 | 62682 | 68226 |
| 20 | Elbert County | 1850.89 | 1850.78 | 0.11 | 19872 | 10.7 | 24960 | 62480 | 66740 |
| 21 | El Paso County | 2129.56 | 2126.45 | 3.11 | 516929 | 243.1 | 22005 | 46844 | 53995 |
| 22 | Fremont County | 1533.95 | 1532.93 | 1.02 | 46145 | 30.1 | 17420 | 34150 | 42303 |
| 23 | Garfield County | 2955.76 | 2947.06 | 8.7 | 43791 | 14.9 | 21341 | 47016 | 53840 |
| 24 | Gilpin County | 150.25 | 149.87 | 0.39 | 4757 | 31.7 | 26148 | 51942 | 61859 |
| 25 | Grand County | 1869.6 | 1846.67 | 22.93 | 12442 | 6.7 | 25198 | 47759 | 55217 |
| 26 | Gunnison County | 3259.75 | 3238.81 | 20.93 | 13956 | 4.3 | 21407 | 36916 | 51950 |
| 27 | Hinsdale County | 1123.14 | 1117.68 | 5.46 | 790 | 0.7 | 22360 | 37279 | 42159 |
| 28 | Huerfano County | 1593.24 | 1590.87 | 2.38 | 7862 | 4.9 | 15242 | 25775 | 32664 |
| 29 | Jackson County | 1620.95 | 1613.21 | 7.74 | 1577 | 1 | 17826 | 31821 | 37361 |
| 30 | Jefferson County | 778.06 | 772.09 | 5.97 | 527056 | 682.6 | 28066 | 57339 | 67310 |
| 31 | Kiowa County | 1785.76 | 1770.99 | 14.76 | 1622 | 0.9 | 16382 | 30494 | 35536 |
| 32 | Kit Carson County | 2161.56 | 2160.87 | 0.69 | 8011 | 3.7 | 16964 | 33152 | 41867 |
| 33 | Lake County | 383.9 | 376.89 | 7.01 | 7812 | 20.7 | 18524 | 37691 | 41652 |
| 34 | La Plata County | 1699.93 | 1692.15 | 7.78 | 43941 | 26 | 21534 | 40159 | 50446 |
| 35 | Larimer County | 2633.86 | 2601.3 | 32.56 | 251494 | 96.7 | 23689 | 48655 | 58866 |
| 36 | Las Animas County | 4775.42 | 4772.63 | 2.79 | 15207 | 3.2 | 16829 | 28273 | 34072 |
| 37 | Lincoln County | 2586.39 | 2586.09 | 0.3 | 6087 | 2.4 | 15510 | 31914 | 39738 |
| 38 | Logan County | 1844.86 | 1838.52 | 6.33 | 20504 | 11.2 | 16721 | 32724 | 42241 |
| 39 | Mesa County | 3341.11 | 3327.75 | 13.36 | 116255 | 34.9 | 18715 | 35864 | 43009 |
| 40 | Mineral County | 877.7 | 875.72 | 1.99 | 831 | 0.9 | 24475 | 34844 | 40833 |
| 41 | Moffat County | 4750.94 | 4742.25 | 8.69 | 13184 | 2.8 | 18540 | 41528 | 45511 |
| 42 | Montezuma County | 2039.97 | 2036.63 | 3.34 | 23830 | 11.7 | 17003 | 32083 | 38071 |
| 43 | Montrose County | 2242.57 | 2240.61 | 1.96 | 33432 | 14.9 | 17158 | 35234 | 40849 |
| 44 | Morgan County | 1293.87 | 1285.36 | 8.51 | 27171 | 21.1 | 15492 | 34568 | 39102 |
| 45 | Otero County | 1269.74 | 1262.86 | 6.89 | 20311 | 16.1 | 15113 | 29738 | 35906 |
| 46 | Ouray County | 542.21 | 540.47 | 1.74 | 3742 | 6.9 | 24335 | 42019 | 49776 |
| 47 | Park County | 2210.69 | 2200.69 | 10 | 14523 | 6.6 | 25019 | 51899 | 57025 |
| 48 | Phillips County | 687.74 | 687.62 | 0.12 | 4480 | 6.5 | 16394 | 32177 | 38144 |
| 49 | Pitkin County | 973.23 | 970.42 | 2.81 | 14872 | 15.3 | 40811 | 59375 | 75048 |
| 50 | Prowers County | 1644.35 | 1640.38 | 3.97 | 14483 | 8.8 | 14150 | 29935 | 34202 |
| 51 | Pueblo County | 2397.73 | 2388.69 | 9.04 | 141472 | 59.2 | 17163 | 32775 | 40130 |
| 52 | Rio Blanco County | 3222.91 | 3220.97 | 1.94 | 5986 | 1.9 | 17344 | 37711 | 44425 |
| 53 | Rio Grande County | 912.14 | 911.6 | 0.53 | 12413 | 13.6 | 15650 | 31836 | 36809 |
| 54 | Routt County | 2368.02 | 2361.59 | 6.43 | 19690 | 8.3 | 28792 | 53612 | 61927 |
| 55 | Saguache County | 3170.25 | 3168.44 | 1.82 | 5917 | 1.9 | 13121 | 25495 | 29405 |
| 56 | San Juan County | 388.29 | 387.42 | 0.86 | 558 | 1.4 | 17584 | 30764 | 40000 |
| 57 | San Miguel County | 1288.49 | 1286.5 | 1.98 | 6594 | 5.1 | 35329 | 48514 | 60417 |
| 58 | Sedgwick County | 549.6 | 548.24 | 1.36 | 2747 | 5 | 16125 | 28278 | 33953 |
| 59 | Summit County | 619.25 | 608.16 | 11.09 | 23548 | 38.7 | 28676 | 56587 | 66914 |
| 60 | Teller County | 558.96 | 557.06 | 1.89 | 20555 | 36.9 | 23412 | 50165 | 57071 |
| 61 | Washington County | 2524.12 | 2520.98 | 3.13 | 4926 | 2 | 17788 | 32431 | 37287 |
| 62 | Weld County | 4021.56 | 3992.45 | 29.11 | 180936 | 45.3 | 18957 | 42321 | 49569 |
| 63 | Yuma County | 2369.1 | 2365.79 | 3.3 | 9841 | 4.2 | 16005 | 33169 | 39814 |