As of 2026 the population of Jerome County, ID is 25,611. The population is expected to grow to 26,376 by 2031 - a growth rate of 0.59%.
The median age of Jerome County, ID residents is 34.
The diversity index of Jerome County, ID is 74.4, meaning that there is a 74% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
The average household income in Jerome County, ID is $90,470 and projected to be $102,246 in 2031. Per capita income is $30,704, projected to be $35,008 in 2031. 2.24% of households – 573 – have an income of $200,000 or higher. Average net worth is $792,663 and the average disposable income is $69,071.
There are 9,121 housing units in Jerome County, ID; 6,157 are owner-occupied, 2,525 are rented, and 439 are vacant. The average home value is $385,323, with 1,142 homes built in 2010 or later, and 785 built in 1939 or earlier.
There are 804 businesses in Jerome County, ID, employing 9,613 workers and pulling from a labor force of 11,317 age 16 and above. 4,248 workers commute into Jerome County, ID from outside the county or state. Key industries for the area include:
6,831 residents both live and work in/around Jerome County, ID. The average travel time is 20.7 minutes. 5.11% people have a commute of less than 5 minutes while 2.66% commute 90 minutes or more each way. Of commuters, 9,451 drive alone, 1,073 carpool, and 18 take public transportation. 215 use other modes of transport such as motorcycle, bicycle, walking, etc. 560 residents work from home.
4,562 members of the workforce hold a high school diploma or GED. 1,820 have associates degrees, 1,610 have bachelor’s degrees, and 715 hold a graduate or professional degree.
Source: ESRI, 2026-04-10
