Cassia County vs Jefferson County

A side-by-side comparison of Cassia County and Jefferson County: population, income, housing, and more.

Cassia County and Jefferson County are counties in Idaho. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Jefferson County has the higher population (32,234 vs 25,165 in Cassia County). Jefferson County has the higher median household income ($82,952 vs $67,042 in Cassia County). Jefferson County has the higher median home value ($335,000 vs $257,300 in Cassia County).

Population, income & housing

	Cassia County	Jefferson County
Population	25,165	32,234
Median age	33.1 yrs	32.3 yrs
Median household income	$67,042	$82,952
Median home value	$257,300	$335,000
Median gross rent	$920	$1,098
Housing units	8,992	10,499
Homeownership rate	70.0%	82.4%
Bachelor's degree or higher	20.9%	27.2%
Unemployment rate	2.5%	2.5%

Trends (ACS 5-year, 2019–2023)

	Cassia County	Jefferson County
Population	23,690 → 25,165 (+6.2%)	28,534 → 32,234 (+13.0%)
Median household income	$52,935 → $67,042 (+26.6%)	$63,048 → $82,952 (+31.6%)
Median home value	$162,100 → $257,300 (+58.7%)	$203,700 → $335,000 (+64.5%)
Median gross rent	$647 → $920 (+42.2%)	$796 → $1,098 (+37.9%)

Cassia County

Population

23,69025,165

Median household income

$52,935$67,042

Median home value

$162,100$257,300

Median gross rent

$647$920

Jefferson County

Population

28,53432,234

Median household income

$63,048$82,952

Median home value

$203,700$335,000

Median gross rent

$796$1,098

Age & race/ethnicity

Age distribution (share)

	Cassia County	Jefferson County
Under 5	7.9%	7.4%
5 to 17	23.4%	25.4%
18 to 24	9.3%	9.0%
25 to 34	12.2%	10.9%
35 to 44	12.7%	14.3%
45 to 54	10.1%	10.7%
55 to 64	10.8%	10.6%
65 to 74	8.1%	7.5%
75 and over	5.6%	4.1%

Race & ethnicity (share)

	Cassia County	Jefferson County
White (non-Hispanic)	65.2%	86.1%
Black or African American	0.1%	0.1%
American Indian & Alaska Native	0.2%	0.6%
Asian	0.3%	0.1%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	1.2%	0.2%
Two or more races	3.6%	2.2%
Hispanic or Latino	29.4%	10.8%

Educational attainment (age 25+)

Share of adults 25+

	Cassia County	Jefferson County
No high school diploma	14.6%	6.7%
High school graduate	27.1%	26.7%
Some college or associate's	37.4%	39.4%
Bachelor's degree	13.9%	19.3%
Graduate or professional degree	7.0%	7.8%

Commute to work

How workers get to work (share)

	Cassia County	Jefferson County
Drove alone	81.3%	78.6%
Carpooled	7.8%	9.5%
Public transit	0.2%	2.4%
Walked	1.3%	1.5%
Bicycle	0.1%	0.0%
Worked from home	7.7%	7.3%
Other means	1.7%	0.6%

Housing

Units in structure (share)

	Cassia County	Jefferson County
1-unit, detached	79.1%	84.9%
1-unit, attached	2.0%	2.1%
2 to 4 units	4.6%	3.8%
5 to 19 units	3.1%	1.4%
20 or more units	1.2%	0.4%
Mobile home & other	10.0%	7.3%

Poverty & households

	Cassia County	Jefferson County
Poverty rate	10.3%	9.2%
Average household size	3.00	3.24
Mean commute (minutes)	18	25
Median year structure built	1975	1991