Jefferson County, Idaho

7 cities & places have their primary county here.

Population: 32,234
Median household income: $82,952
Median home value: $335,000

Home to 32,234 residents, Jefferson County is one of Idaho's counties. 7 cities and places have their primary county here. The median household income of $82,952 is above the Idaho median ($74,636).

From 2019 to 2023, Jefferson County's population grew 13.0% from 28,534 to 32,234, while its median household income rose 31.6% from $63,048 to $82,952.

The median resident is 32.3 years old. The largest age group is 5 to 17, 25.4% of residents.

Demographics

ACS 2019–2023

Population: 32,234
Median age: 32.3 yrs
Median household income: $82,952
Median home value: $335,000
Median gross rent: $1,098
Housing units: 10,499
Homeownership rate: 82.4%
Bachelor's degree or higher: 27.2%
Unemployment rate: 2.5%

Trends

ACS 5-year · 2019–2023

Population

28,53432,234

Median household income

$63,048$82,952

Median home value

$203,700$335,000

Median gross rent

$796$1,098

Year	Population	Median household income	Median home value	Median gross rent
2019	28,534	$63,048	$203,700	$796
2020	29,238	$65,577	$223,900	$853
2021	30,427	$69,097	$245,100	$890
2022	31,383	$77,491	$284,700	$971
2023	32,234	$82,952	$335,000	$1,098

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 57.4%

5 to 1725.4%

18 to 249.0%

25 to 3410.9%

35 to 4414.3%

45 to 5410.7%

55 to 6410.6%

65 to 747.5%

75 and over4.1%

	Count	Share
Under 5	2,397	7.4%
5 to 17	8,195	25.4%
18 to 24	2,912	9.0%
25 to 34	3,521	10.9%
35 to 44	4,621	14.3%
45 to 54	3,449	10.7%
55 to 64	3,422	10.6%
65 to 74	2,411	7.5%
75 and over	1,306	4.1%

Race & ethnicity

	Count	Share
White (non-Hispanic)	27,745	86.1%
Black or African American	19	0.1%
American Indian & Alaska Native	180	0.6%
Asian	21	0.1%
Native Hawaiian & Pacific Islander	5	0.0%
Some other race	60	0.2%
Two or more races	719	2.2%
Hispanic or Latino (any race)	3,485	10.8%

Educational attainment (age 25+)

No high school diploma6.7%

High school graduate26.7%

Some college or associate's39.4%

Bachelor's degree19.3%

Graduate or professional degree7.8%

	Count	Share
No high school diploma	1,261	6.7%
High school graduate	5,003	26.7%
Some college or associate's	7,375	39.4%
Bachelor's degree	3,624	19.3%
Graduate or professional degree	1,467	7.8%

Commute to work

Mean travel time to work: 25 min

Drove alone78.6%

Carpooled9.5%

Public transit2.4%

Walked1.5%

Bicycle0.0%

Worked from home7.3%

Other means0.6%

How workers get to work

	Count	Share
Drove alone	11,404	78.6%
Carpooled	1,382	9.5%
Public transit	354	2.4%
Walked	220	1.5%
Bicycle	0	0.0%
Worked from home	1,062	7.3%
Other means	93	0.6%

Travel time

	Count	Share
Under 15 min	3,315	24.6%
15 to 29 min	6,244	46.4%
30 to 44 min	2,355	17.5%
45 to 59 min	471	3.5%
60+ min	1,068	7.9%

Households

Average household size: 3.24
Poverty rate: 9.2% (2,967 of 32,096)

	Count	Share
Family households	7,998	80.8%
Nonfamily households	1,901	19.2%

Housing

Median year structure built: 1991

Occupancy

	Count	Share
Occupied	9,899	94.3%
Vacant	600	5.7%

Tenure (of occupied units)

	Count	Share
Owner-occupied	8,154	82.4%
Renter-occupied	1,745	17.6%

1-unit, detached84.9%

1-unit, attached2.1%

2 to 4 units3.8%

5 to 19 units1.4%

20 or more units0.4%

Mobile home & other7.3%

Units in structure

	Count	Share
1-unit, detached	8,914	84.9%
1-unit, attached	225	2.1%
2 to 4 units	403	3.8%
5 to 19 units	149	1.4%
20 or more units	43	0.4%
Mobile home & other	765	7.3%

Geography

County GEOID: 16051
State: Idaho
Land area: 1,094 sq mi
Water area: 12 sq mi
Center point: 43.7970, -112.3186