Wyoming
As of the census of 2000, there were 493782 people in the state, organized into 193608 households, and 130497 families residing in the state. The population density was 5.1 people per square mile (1.97/kmē), giving it the second least densely populated state among the United States. There were 223854 housing units at an average density of 2.3 per square mile (0.89/kmē). It has an average household size was 2.48 persons, and the average family size was 3 persons. In the state the population is diverse age-wise, with 26.1% under the age of 18, 10.1% from 18 to 24, 28.1% from 25 to 44, 24% from 45 to 64, and 11.7% who were 65 or older. For every 100 females there were 101.2 males. For every 100 females age 18 and over, there were 99.7 males. The median age was 36.2 years, the median age of male residents at 35.3 and the median age of female residents at 37.1. In July 2008, its estimated population was 493782, The racial or ethnic makeup of the state was 92.08% White, 0.75% Black or African American, 2.25% American Indian, 0.56% Asian, 0.06% Native Hawaiian, 1.8% from two or more races and 2.49% Other races.
The median income for a household in the state was $37892, making it the 16th poorest state by median household income among the United States. The median income for a family in the state was $45685, it is the 34th highest state by median family income in the U.S. state of America. The per capita income for the state was $19134, it is the 15th poorest state in terms of per capita income. The median income of state was $19763, Males have a median income of $26714 versus $13263 for females. According to the United States Bureau of Economic Analysis, the 2008 total gross domestic product was $35.3 billion, it is United States's third poorest state by GDP. Its GDP per capita is $40837. Wyoming's GDP increased 11.9% from 2007.
In 2000, 136139 pupils and students, of which 67973 are male and 68166 are female, 27.57% of the total population, are in the education system. Of which, total enrollment of student are in, 7880 nursery or pri school, 6612 kindergarten, 59518 elementary school, 32432 high school and 29697 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 | Albany County | 4308.79 | 4272.75 | 36.04 | 32014 | 7.5 | 16706 | 28790 | 44334 |
| 2 | Big Horn County | 3158.96 | 3136.99 | 21.97 | 11461 | 3.7 | 15086 | 32682 | 38237 |
| 3 | Campbell County | 4801.56 | 4796.76 | 4.8 | 33698 | 7 | 20063 | 49536 | 53927 |
| 4 | Carbon County | 7964.03 | 7896.14 | 67.89 | 15639 | 2 | 18375 | 36060 | 41991 |
| 5 | Converse County | 4265.1 | 4254.72 | 10.38 | 12052 | 2.8 | 18744 | 39603 | 45905 |
| 6 | Crook County | 2870.52 | 2858.59 | 11.93 | 5887 | 2.1 | 17379 | 35601 | 43105 |
| 7 | Fremont County | 9265.8 | 9182.27 | 83.53 | 35804 | 3.9 | 16519 | 32503 | 37983 |
| 8 | Goshen County | 2232.16 | 2225.32 | 6.84 | 12538 | 5.6 | 15965 | 32228 | 40297 |
| 9 | Hot Springs County | 2006.21 | 2003.89 | 2.32 | 4882 | 2.4 | 16858 | 29888 | 39364 |
| 10 | Johnson County | 4174.71 | 4166.28 | 8.42 | 7075 | 1.7 | 19030 | 34012 | 42299 |
| 11 | Laramie County | 2687.63 | 2686.05 | 1.58 | 81607 | 30.4 | 19634 | 39607 | 46536 |
| 12 | Lincoln County | 4089.01 | 4069.09 | 19.92 | 14573 | 3.6 | 17533 | 40794 | 44919 |
| 13 | Natrona County | 5375.72 | 5339.88 | 35.83 | 66533 | 12.5 | 18913 | 36619 | 45575 |
| 14 | Niobrara County | 2627.9 | 2625.81 | 2.09 | 2407 | 0.9 | 15757 | 29701 | 33714 |
| 15 | Park County | 6968.51 | 6942.39 | 26.11 | 25786 | 3.7 | 18020 | 35829 | 41406 |
| 16 | Platte County | 2110.9 | 2084.93 | 25.97 | 8807 | 4.2 | 17530 | 33866 | 41449 |
| 17 | Sheridan County | 2527.07 | 2523.32 | 3.75 | 26560 | 10.5 | 19407 | 34538 | 42669 |
| 18 | Sublette County | 4935.66 | 4882.57 | 53.08 | 5920 | 1.2 | 20056 | 39044 | 45000 |
| 19 | Sweetwater County | 10491.17 | 10425.3 | 65.87 | 37613 | 3.6 | 19575 | 46537 | 54173 |
| 20 | Teton County | 4221.8 | 4007.76 | 214.04 | 18251 | 4.6 | 38260 | 54614 | 63916 |
| 21 | Uinta County | 2087.56 | 2081.66 | 5.9 | 19742 | 9.5 | 16994 | 44544 | 49520 |
| 22 | Washakie County | 2242.75 | 2240.06 | 2.69 | 8289 | 3.7 | 17780 | 34943 | 42584 |
| 23 | Weston County | 2400.07 | 2397.86 | 2.21 | 6644 | 2.8 | 17366 | 32348 | 40472 |