Idaho
As of the census of 2000, there were 1293953 people, 469645 households, and 335588 families living in the state. The population density was 15.6 people per square mile (6.02/kmē), it is the seventh least populated state in terms of population density. There were 527824 housing units at an average density of 6.4 per square mile (2.47/kmē). It has an average household size was 2.69 persons, and the average family size was 3.17 persons. In the state the population is diverse age-wise, with 28.5% under the age of 18, 10.7% from 18 to 24, 28% from 25 to 44, 21.5% from 45 to 64, and 11.3% who were 65 or older. For every 100 females there were 100.5 males. For every 100 females age 18 and over, there were 98.5 males. The median age is 33.2 years, the median age of male residents at 32.2 and the median age of female residents at 34.2. Its population was estimated at 1293953 in July 2008, The racial makeup of the state was 90.99% White, 0.42% Black or African American, 1.36% American Indian, 0.92% Asian, 0.1% Native Hawaiian, 1.98% from two or more races and 4.23% Other races.
The median income for a household in the state was $37572, it is the 15th poorest state in terms of median household income. The median income for a family in the state was $43490, it is the 11th poorest state in terms of median family income. The per capita income for the state was $17841, it is tenth poorest state by per capita income in United States. The median income of state was $19515, The median income for males was $25273, compared to $13610 for females. The Gross Domestic Product (GDP) of Idaho in 2008 was $52.7 billion, Idaho would be the ninth lowest state by gross domestic product in the U.S. state of America. The states per capita personal income in 2008 was $29890.
In 2000, 368579 pupils and students, of which 187122 are male and 181457 are female, 28.48% of the total population, are in the education system. Of which, total enrollment of student are in, 20764 nursery or pri school, 19149 kindergarten, 165698 elementary school, 85576 high school and 77392 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 | Ada County | 1060.33 | 1054.99 | 5.34 | 300904 | 285.2 | 22519 | 46140 | 54416 |
| 2 | Adams County | 1370 | 1364.58 | 5.43 | 3476 | 2.5 | 14908 | 28423 | 32335 |
| 3 | Bannock County | 1147.46 | 1113.3 | 34.16 | 75565 | 67.9 | 17148 | 36683 | 44192 |
| 4 | Bear Lake County | 1049.44 | 971.38 | 78.05 | 6411 | 6.6 | 13592 | 32162 | 38351 |
| 5 | Benewah County | 783.98 | 776.07 | 7.91 | 9171 | 11.8 | 15285 | 31517 | 36000 |
| 6 | Bingham County | 2120.24 | 2094.73 | 25.51 | 41735 | 19.9 | 14365 | 36423 | 40312 |
| 7 | Blaine County | 2661.02 | 2644.78 | 16.24 | 18991 | 7.2 | 31346 | 50496 | 60037 |
| 8 | Boise County | 1906.76 | 1902.46 | 4.3 | 6670 | 3.5 | 18787 | 38651 | 43138 |
| 9 | Bonner County | 1919.59 | 1737.67 | 181.92 | 36835 | 21.2 | 17263 | 32803 | 37930 |
| 10 | Bonneville County | 1900.65 | 1868.48 | 32.18 | 82522 | 44.2 | 18326 | 41805 | 48216 |
| 11 | Boundary County | 1278.21 | 1268.81 | 9.4 | 9871 | 7.8 | 14636 | 31250 | 36440 |
| 12 | Butte County | 2233.59 | 2232.85 | 0.74 | 2899 | 1.3 | 14948 | 30473 | 36950 |
| 13 | Camas County | 1079.02 | 1074.96 | 4.06 | 991 | 0.9 | 19550 | 34167 | 40156 |
| 14 | Canyon County | 603.51 | 589.72 | 13.79 | 131441 | 222.9 | 15155 | 35884 | 40377 |
| 15 | Caribou County | 1798.62 | 1766.01 | 32.61 | 7304 | 4.1 | 15179 | 37609 | 42630 |
| 16 | Cassia County | 2580.31 | 2566.45 | 13.86 | 21416 | 8.3 | 14087 | 33322 | 38162 |
| 17 | Clark County | 1765.21 | 1764.63 | 0.58 | 1022 | 0.6 | 11141 | 31576 | 31534 |
| 18 | Clearwater County | 2488.1 | 2461.4 | 26.7 | 8930 | 3.6 | 15463 | 32071 | 37259 |
| 19 | Custer County | 4936.79 | 4925.45 | 11.34 | 4342 | 0.9 | 15783 | 32174 | 39551 |
| 20 | Elmore County | 3100.51 | 3077.57 | 22.93 | 29130 | 9.5 | 16773 | 35256 | 37823 |
| 21 | Franklin County | 668.36 | 665.43 | 2.92 | 11329 | 17 | 13702 | 36061 | 40185 |
| 22 | Fremont County | 1895.59 | 1866.76 | 28.84 | 11819 | 6.3 | 13965 | 33424 | 36715 |
| 23 | Gem County | 565.75 | 562.58 | 3.17 | 15181 | 27 | 15340 | 34460 | 40195 |
| 24 | Gooding County | 733.84 | 730.78 | 3.06 | 14155 | 19.4 | 14612 | 31888 | 36290 |
| 25 | Idaho County | 8502.48 | 8484.88 | 17.59 | 15511 | 1.8 | 14411 | 29515 | 33919 |
| 26 | Jefferson County | 1105.55 | 1095.08 | 10.47 | 19155 | 17.5 | 13838 | 37737 | 41530 |
| 27 | Jerome County | 601.87 | 599.84 | 2.03 | 18342 | 30.6 | 15530 | 34696 | 39083 |
| 28 | Kootenai County | 1315.69 | 1245.12 | 70.57 | 108685 | 87.3 | 18430 | 37754 | 42905 |
| 29 | Latah County | 1076.89 | 1076.65 | 0.24 | 34935 | 32.4 | 16690 | 32524 | 46303 |
| 30 | Lemhi County | 4569.5 | 4564.16 | 5.35 | 7806 | 1.7 | 16037 | 30185 | 35261 |
| 31 | Lewis County | 479.81 | 479.04 | 0.77 | 3747 | 7.8 | 15942 | 31413 | 37336 |
| 32 | Lincoln County | 1205.86 | 1205.53 | 0.33 | 4044 | 3.4 | 14257 | 32484 | 36792 |
| 33 | Madison County | 473.36 | 471.52 | 1.84 | 27467 | 58.3 | 10956 | 32607 | 40880 |
| 34 | Minidoka County | 762.98 | 759.62 | 3.36 | 20174 | 26.6 | 13813 | 32021 | 36500 |
| 35 | Nez Perce County | 856.36 | 849.08 | 7.28 | 37410 | 44.1 | 18544 | 36282 | 44212 |
| 36 | Oneida County | 1201.61 | 1200.33 | 1.28 | 4125 | 3.4 | 13829 | 34309 | 38341 |
| 37 | Owyhee County | 7696.71 | 7677.98 | 18.72 | 10644 | 1.4 | 13405 | 28339 | 32856 |
| 38 | Payette County | 410.19 | 407.52 | 2.67 | 20578 | 50.5 | 14924 | 33046 | 37430 |
| 39 | Power County | 1442.6 | 1405.57 | 37.03 | 7538 | 5.4 | 14007 | 32226 | 36685 |
| 40 | Shoshone County | 2635.5 | 2633.91 | 1.59 | 13771 | 5.2 | 15934 | 28535 | 35694 |
| 41 | Teton County | 450.57 | 450.36 | 0.21 | 5999 | 13.3 | 17778 | 41968 | 45848 |
| 42 | Twin Falls County | 1928.47 | 1925.03 | 3.44 | 64284 | 33.4 | 16678 | 34506 | 39886 |
| 43 | Valley County | 3733.66 | 3677.82 | 55.84 | 7651 | 2.1 | 19246 | 36927 | 42283 |
| 44 | Washington County | 1473.54 | 1456.32 | 17.23 | 9977 | 6.9 | 15464 | 30625 | 35542 |