Elmore County vs Jefferson County

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

Elmore 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 29,046 in Elmore County). Jefferson County has the higher median household income ($82,952 vs $58,976 in Elmore County). Jefferson County has the higher median home value ($335,000 vs $278,300 in Elmore County).

Population, income & housing

	Elmore County	Jefferson County
Population	29,046	32,234
Median age	32.5 yrs	32.3 yrs
Median household income	$58,976	$82,952
Median home value	$278,300	$335,000
Median gross rent	$1,111	$1,098
Housing units	12,168	10,499
Homeownership rate	65.3%	82.4%
Bachelor's degree or higher	21.2%	27.2%
Unemployment rate	6.6%	2.5%

Trends (ACS 5-year, 2019–2023)

	Elmore County	Jefferson County
Population	26,743 → 29,046 (+8.6%)	28,534 → 32,234 (+13.0%)
Median household income	$46,855 → $58,976 (+25.9%)	$63,048 → $82,952 (+31.6%)
Median home value	$153,800 → $278,300 (+80.9%)	$203,700 → $335,000 (+64.5%)
Median gross rent	$833 → $1,111 (+33.4%)	$796 → $1,098 (+37.9%)

Elmore County

Population

26,74329,046

Median household income

$46,855$58,976

Median home value

$153,800$278,300

Median gross rent

$833$1,111

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)

	Elmore County	Jefferson County
Under 5	7.7%	7.4%
5 to 17	16.8%	25.4%
18 to 24	11.9%	9.0%
25 to 34	17.0%	10.9%
35 to 44	11.7%	14.3%
45 to 54	9.4%	10.7%
55 to 64	11.3%	10.6%
65 to 74	8.4%	7.5%
75 and over	5.8%	4.1%

Race & ethnicity (share)

	Elmore County	Jefferson County
White (non-Hispanic)	70.6%	86.1%
Black or African American	2.7%	0.1%
American Indian & Alaska Native	0.6%	0.6%
Asian	2.7%	0.1%
Native Hawaiian & Pacific Islander	0.4%	0.0%
Some other race	0.5%	0.2%
Two or more races	4.6%	2.2%
Hispanic or Latino	18.0%	10.8%

Educational attainment (age 25+)

Share of adults 25+

	Elmore County	Jefferson County
No high school diploma	11.9%	6.7%
High school graduate	30.4%	26.7%
Some college or associate's	36.5%	39.4%
Bachelor's degree	15.8%	19.3%
Graduate or professional degree	5.4%	7.8%

Commute to work

How workers get to work (share)

	Elmore County	Jefferson County
Drove alone	83.7%	78.6%
Carpooled	7.9%	9.5%
Public transit	0.1%	2.4%
Walked	3.4%	1.5%
Bicycle	0.0%	0.0%
Worked from home	3.2%	7.3%
Other means	1.6%	0.6%

Housing

Units in structure (share)

	Elmore County	Jefferson County
1-unit, detached	69.5%	84.9%
1-unit, attached	5.1%	2.1%
2 to 4 units	10.7%	3.8%
5 to 19 units	1.9%	1.4%
20 or more units	0.9%	0.4%
Mobile home & other	11.9%	7.3%

Poverty & households

	Elmore County	Jefferson County
Poverty rate	12.4%	9.2%
Average household size	2.56	3.24
Mean commute (minutes)	22	25
Median year structure built	1985	1991