Census Charts Index > Idaho
Age and sex distributions for Idaho counties are shown in this easy-to-read table and chart combination.
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Source: U.S. Census Bureau 2000 Census.
| Location | Population | Age % | Median Age | Males per 100 Females | Location | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| under 18 | 18-24 | 25-44 | 45-64 | 65 & over | All Ages | 18 & Over | ||||
| United States | 281,421,906 | 25.7 | 9.6 | 30.2 | 22.0 | 12.4 | 35.3 | 96.3 | 93.4 | United States |
| Idaho | 1,293,953 | 28.5 | 10.7 | 28.0 | 21.5 | 11.3 | 33.2 | 100.5 | 98.5 | Idaho |
| Ada Co. | 300,904 | 27.3 | 10.3 | 32.5 | 20.8 | 9.1 | 32.8 | 100.6 | 98.9 | Ada Co. |
| Adams Co. | 3,476 | 23.9 | 4.6 | 22.6 | 32.7 | 16.1 | 44.4 | 105.4 | 102.1 | Adams Co. |
| Bannock Co. | 75,565 | 28.1 | 14.6 | 27.2 | 20.0 | 10.1 | 29.8 | 97.7 | 94.4 | Bannock Co. |
| Bear Lake Co. | 6,411 | 33.0 | 7.4 | 22.4 | 21.7 | 15.6 | 35.8 | 98.4 | 96.7 | Bear Lake Co. |
| Benewah Co. | 9,171 | 26.9 | 6.8 | 25.4 | 26.6 | 14.2 | 39.2 | 104.0 | 101.1 | Benewah Co. |
| Bingham Co. | 41,735 | 34.9 | 9.7 | 25.3 | 19.7 | 10.3 | 29.7 | 100.0 | 97.9 | Bingham Co. |
| Blaine Co. | 18,991 | 24.0 | 7.7 | 32.6 | 27.9 | 7.8 | 37.4 | 107.9 | 106.8 | Blaine Co. |
| Boise Co. | 6,670 | 26.9 | 4.7 | 27.1 | 30.3 | 11.0 | 40.4 | 105.4 | 106.3 | Boise Co. |
| Bonner Co. | 36,835 | 25.5 | 6.7 | 25.4 | 29.3 | 13.1 | 40.8 | 100.3 | 98.2 | Bonner Co. |
| Bonneville Co. | 82,522 | 32.1 | 9.5 | 27.2 | 21.0 | 10.2 | 31.8 | 99.4 | 96.2 | Bonneville Co. |
| Boundary Co. | 9,871 | 29.2 | 6.9 | 24.4 | 26.2 | 13.4 | 38.3 | 101.4 | 100.6 | Boundary Co. |
| Butte Co. | 2,899 | 29.0 | 6.3 | 24.0 | 25.7 | 14.9 | 38.8 | 101.2 | 99.3 | Butte Co. |
| Camas Co. | 991 | 24.7 | 6.6 | 28.2 | 27.5 | 13.0 | 39.7 | 104.8 | 102.2 | Camas Co. |
| Canyon Co. | 131,441 | 30.9 | 10.7 | 28.3 | 19.1 | 11.0 | 30.5 | 98.7 | 96.3 | Canyon Co. |
| Caribou Co. | 7,304 | 31.7 | 8.2 | 24.5 | 22.0 | 13.6 | 35.0 | 99.2 | 98.6 | Caribou Co. |
| Cassia Co. | 21,416 | 34.1 | 9.0 | 24.5 | 19.6 | 12.7 | 31.1 | 101.2 | 98.7 | Cassia Co. |
| Clark Co. | 1,022 | 35.2 | 8.0 | 27.5 | 20.1 | 9.2 | 30.7 | 110.7 | 112.2 | Clark Co. |
| Clearwater Co. | 8,930 | 23.0 | 5.9 | 26.3 | 29.2 | 15.6 | 41.7 | 113.4 | 115.9 | Clearwater Co. |
| Custer Co. | 4,342 | 25.5 | 4.8 | 25.9 | 29.3 | 14.5 | 41.2 | 104.5 | 106.8 | Custer Co. |
| Elmore Co. | 29,130 | 28.0 | 13.9 | 36.0 | 15.0 | 7.1 | 29.1 | 123.2 | 130.6 | Elmore Co. |
| Franklin Co. | 11,329 | 37.3 | 9.3 | 24.2 | 17.5 | 11.7 | 27.7 | 99.4 | 98.3 | Franklin Co. |
| Fremont Co. | 11,819 | 33.1 | 9.3 | 24.7 | 20.4 | 12.4 | 31.9 | 105.8 | 105.8 | Fremont Co. |
| Gem Co. | 15,181 | 28.0 | 7.6 | 25.3 | 23.5 | 15.6 | 37.5 | 98.7 | 96.7 | Gem Co. |
| Gooding Co. | 14,155 | 29.6 | 8.7 | 25.1 | 21.2 | 15.4 | 35.1 | 104.2 | 102.0 | Gooding Co. |
| Idaho Co. | 15,511 | 25.0 | 6.3 | 23.3 | 28.4 | 17.0 | 42.3 | 103.6 | 104.9 | Idaho Co. |
| Jefferson Co. | 19,155 | 36.3 | 9.6 | 25.5 | 19.3 | 9.3 | 28.8 | 102.2 | 101.0 | Jefferson Co. |
| Jerome Co. | 18,342 | 31.5 | 8.9 | 27.1 | 20.2 | 12.3 | 32.9 | 104.6 | 104.5 | Jerome Co. |
| Kootenai Co. | 108,685 | 27.1 | 8.7 | 28.0 | 23.9 | 12.3 | 36.1 | 98.1 | 94.9 | Kootenai Co. |
| Latah Co. | 34,935 | 20.3 | 24.5 | 26.9 | 18.9 | 9.5 | 27.9 | 107.5 | 108.1 | Latah Co. |
| Lemhi Co. | 7,806 | 25.5 | 5.5 | 22.7 | 29.5 | 16.8 | 42.7 | 99.2 | 97.5 | Lemhi Co. |
| Location | Population | Age % | Median Age | Males per 100 Females | Location | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| under 18 | 18-24 | 25-44 | 45-64 | 65 & over | All Ages | 18 & Over | ||||
| United States | 281,421,906 | 25.7 | 9.6 | 30.2 | 22.0 | 12.4 | 35.3 | 96.3 | 93.4 | United States |
| Idaho | 1,293,953 | 28.5 | 10.7 | 28.0 | 21.5 | 11.3 | 33.2 | 100.5 | 98.5 | Idaho |
| Lewis Co. | 3,747 | 25.4 | 5.3 | 23.8 | 27.1 | 18.5 | 42.5 | 101.9 | 98.2 | Lewis Co. |
| Lincoln Co. | 4,044 | 30.4 | 9.0 | 25.5 | 22.0 | 13.1 | 34.3 | 106.5 | 105.8 | Lincoln Co. |
| Madison Co. | 27,467 | 26.2 | 39.9 | 16.0 | 11.9 | 6.0 | 20.7 | 90.9 | 83.6 | Madison Co. |
| Minidoka Co. | 20,174 | 31.6 | 9.1 | 25.2 | 20.9 | 13.2 | 33.5 | 99.9 | 97.8 | Minidoka Co. |
| Nez Perce Co. | 37,410 | 23.8 | 10.0 | 26.7 | 23.0 | 16.5 | 38.1 | 96.7 | 93.8 | Nez Perce Co. |
| Oneida Co. | 4,125 | 32.0 | 7.7 | 23.1 | 21.4 | 15.9 | 36.0 | 103.1 | 100.4 | Oneida Co. |
| Owyhee Co. | 10,644 | 31.9 | 8.5 | 26.5 | 20.9 | 12.1 | 32.9 | 109.0 | 107.6 | Owyhee Co. |
| Payette Co. | 20,578 | 30.6 | 7.9 | 26.6 | 21.7 | 13.2 | 34.4 | 98.3 | 94.8 | Payette Co. |
| Power Co. | 7,538 | 33.8 | 8.4 | 25.4 | 22.0 | 10.4 | 31.6 | 101.0 | 99.9 | Power Co. |
| Shoshone Co. | 13,771 | 22.9 | 6.7 | 25.5 | 27.4 | 17.4 | 41.8 | 99.4 | 97.0 | Shoshone Co. |
| Teton Co. | 5,999 | 31.8 | 8.1 | 33.8 | 18.9 | 7.5 | 31.3 | 112.7 | 114.5 | Teton Co. |
| Twin Falls Co. | 64,284 | 27.9 | 10.4 | 26.0 | 21.5 | 14.3 | 34.9 | 96.5 | 93.7 | Twin Falls Co. |
| Valley Co. | 7,651 | 23.7 | 4.4 | 24.9 | 32.2 | 14.8 | 43.5 | 105.9 | 104.4 | Valley Co. |
| Washington Co. | 9,977 | 27.4 | 7.2 | 23.4 | 24.3 | 17.7 | 39.2 | 95.8 | 93.0 | Washington Co. |
The entries under the Age % heading are percentages showing the age distribution. For example, the entry in the first row (United States) in the under 18 column is 25.7, meaning that 25.7% of the U.S. population is under 18 years of age. The Age% values add up to approximately 100%.
The length of the colored bars in each Age % table cell are in proportion to the value of the number in the cell. For example, the colored bar in the cell showing 25.7 is 25.7% as wide as the cell.
The length of the colored bars under the Males per 100 Females header are proportional to the value when converted to percentages. For example, 110 males per 100 females = 110 males per 210 people = 52.4%.
The numeric values under the Population header are totals. Here the colored bars represent percentages of the highest population of any county in the state. For example, the county with the highest population will have a colored bar that fills the cell. A county with half that many people will have a colored bar that fills half the cell. For small percentages the bar does not appear.
Abbreviations used in location names: Co.=County, C.A.=Census Area, Pa.=Parish, Mu.=Municipio.
Interested in Idaho? Check out Idaho Climate for data and charts about average weather, daylight, and global warming.
Please note that if you set your browser to display very large text sizes, the table cell sizes will change, and the lengths of the colored bars will not be accurate, although they will still show proportions.
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