As of 2025 the population of Jefferson County is 12,540. The population is expected to grow to 13,687 by 2030 - a growth rate of 1.77%.
The median age of Jefferson County residents is 49.
The diversity index of Jefferson County is 23.3, meaning that there is a 23% 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 Jefferson County is $112,302 and projected to be $126,759 in 2030. Per capita income is $46,334, projected to be $52,891 in 2030. 4.97% of households – 623 – have an income of $200,000 or higher. Average net worth is $1,745,713 and the average disposable income is $82,565.
There are 5,697 housing units in Jefferson County; 4,415 are owner-occupied, 752 are rented, and 530 are vacant. The average home value is $529,459, with 721 homes built in 2010 or later, and 556 built in 1939 or earlier.
There are 467 businesses in Jefferson County, employing 2,681 workers and pulling from a labor force of 5,650 age 16 and above. 3,155 workers commute into Jefferson County from outside the county or state. Key industries for the area include:
2,396 residents both live and work in/around Jefferson County. The average travel time is 22.3 minutes. 14.73% people have a commute of less than 5 minutes while 5.43% commute 90 minutes or more each way. Of commuters, 4,080 drive alone, 659 carpool, and 10 take public transportation. 231 use other modes of transport such as motorcycle, bicycle, walking, etc. 670 residents work from home.
2,456 members of the workforce hold a high school diploma or GED. 1,335 have associates degrees, 1,948 have bachelor’s degrees, and 1,079 hold a graduate or professional degree.
