Jefferson County, Idaho's estimated 2024 population is 35,060 with a growth rate of 2.52% in the past year according to the most recent United States census data. Jefferson County, Idaho is the 12th largest county in Idaho. The 2010 population was 26,222 and has seen a growth of 33.7% since that time.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 39,370 | 862 | 2.24% |
| 2028 | 38,508 | 862 | 2.29% |
| 2027 | 37,646 | 862 | 2.34% |
| 2026 | 36,784 | 862 | 2.4% |
| 2025 | 35,922 | 862 | 2.46% |
| 2024 | 35,060 | 862 | 2.52% |
| 2023 | 34,198 | 862 | 2.59% |
| 2022 | 33,336 | 1,135 | 3.52% |
| 2021 | 32,201 | 1,121 | 3.61% |
| 2020 | 31,080 | 1,162 | 3.88% |
| 2019 | 29,918 | 500 | 1.7% |
| 2018 | 29,418 | 970 | 3.41% |
| 2017 | 28,448 | 621 | 2.23% |
| 2016 | 27,827 | 694 | 2.56% |
| 2015 | 27,133 | 185 | 0.69% |
| 2014 | 26,948 | 139 | 0.52% |
| 2013 | 26,809 | 167 | 0.63% |
| 2012 | 26,642 | 327 | 1.24% |
| 2011 | 26,315 | 93 | 0.35% |
| 2010 | 26,222 | 0 | 0% |
| 1990 | 16,543 | 1,239 | 8.1% |
| 1980 | 15,304 | 3,685 | 31.72% |
| 1970 | 11,619 | -53 | -0.45% |
| 1960 | 11,672 | 1,177 | 11.21% |
| 1950 | 10,495 | -267 | -2.48% |
| 1940 | 10,762 | 1,591 | 17.35% |
| 1930 | 9,171 | -270 | -2.86% |
| 1920 | 9,441 | -29,929 | -76.02% |
Race | Population | Percentage (of total) |
|---|---|---|
| White | 28,459 | 88.29% |
| Two or more races | 2,080 | 6.45% |
| Other race | 1,432 | 4.44% |
| Native American | 197 | 0.61% |
| Black or African American | 40 | 0.12% |
| Asian | 21 | 0.07% |
| Native Hawaiian or Pacific Islander | 5 | 0.02% |
White
Two or more races
Other race
Native American
Black or African American
Asian
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 9,899 | 3.24 | 82.4 | 17.6 |
| Married | 6,911 | 3.74 | 87.3 | 12.7 |
| Non Family | 1,901 | 1.2 | 70 | 30 |
| Female | 648 | 3.71 | 76.4 | 23.6 |
| Male | 439 | 3.54 | 67.4 | 32.6 |
3.66
Average Family Size
3.24
Average Household Size
82.4%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 744 | 3.97% |
| Associates Degree | 2,726 | 14.55% |
| Bachelors Degree | 3,624 | 19.35% |
| Graduate Degree | 1,467 | 7.83% |
| High School Graduate | 5,003 | 26.71% |
| Less Than 9th Grade | 517 | 2.76% |
| Some College | 4,649 | 24.82% |
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 16,577 | 15,885 | 4,718 |
| Hispanic | 1,640 | 1,115 | 183 |
| 2+ Races | 1,057 | 814 | 218 |
| Other Race | 645 | 431 | 60 |
| Native American | 74 | 65 | 55 |
| Black | 36 | 32 | 0 |
| Asian | 17 | 17 | 0 |
The highest rate of high school graduation is among asian people with a rate of 100%.
The highest rate of bachelors degrees is among native american people with a rate of 74.32%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $50,731 | $80,487 | $32,379 |
| Graduate Degree | $60,625 | $83,871 | $48,649 |
| High School Graduate | $40,123 | $51,121 | $25,694 |
| Less Than 9th Grade | $43,350 | $48,633 | $15,298 |
| Overall | $46,155 | $61,936 | $29,260 |
| Some College | $45,523 | $65,711 | $24,088 |
$46,155
Average Earnings
$61,936
Average Male
$29,260
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
88.85% of Jefferson County, Idaho residents speak only English, while 11.15% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.92% of the population.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 27,641 | 2,066 | 7.47% |
| Hispanic | 3,465 | 846 | 24.42% |
| Other | 1,427 | 528 | 37% |
| Multiple | 2,061 | 246 | 11.94% |
| Native | 197 | 11 | 5.58% |
9.24%
Overall Poverty Rate
8.49%
Male Poverty Rate
10.04%
Female Poverty Rate
The race most likely to be in poverty in Jefferson County, Idaho is Other, with 37% below the poverty level.
The race least likely to be in poverty in Jefferson County, Idaho is Native, with 5.58% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.92%. Among those working part-time, it was 8.21%, and for those that did not work, the poverty rate was 13.94%.
rate
Rate | Poverty |
|---|---|
| Less Than 9th Grade | 19.71% |
| High School | 7.63% |
| Some College | 6.99% |
| Bachelors or Greater | 4.93% |
rate
Rate | Poverty |
|---|---|
| Male Unemployed | 18.32% |
| Male Employed | 6.43% |
| Female Employed | 2.88% |
| Female Unemployed | 1.62% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $89,672 | $103,571 |
| Households | $82,952 | $95,822 |
| Married Families | $94,333 | $-999,999,999 |
| Non Families | $40,318 | $57,101 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
62.2%
Overall Marriage Rate
62.4%
Male Marriage Rate
62.0%
Female Marriage Rate
male
female
The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
1,201
Number of Veterans
1,061
Male Veterans
140
Female Veterans
War | Veterans |
|---|---|
| Vietnam | 457 |
| First Gulf War | 407 |
| Second Gulf War | 254 |
| Korea | 33 |
| World War II | 10 |
count
Age Group | Veterans |
|---|---|
| 55 to 64 | 365 |
| 65 to 74 | 286 |
| 35 to 54 | 279 |
| 75+ | 264 |
| 18 to 34 | 7 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 1,043 | 5.42% |
| Hispanic | 150 | 7.2% |
| 2+ Races | 128 | 10.47% |
| Black | 11 | 30.56% |
| Native American | 11 | 5.98% |
| Other Race | 8 | 0.88% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
5.21%
Veteran Poverty Rate
34.26%
Veteran Disability Rate
LaborForceParticipation
66.2%
Labor Force Participation
64.5%
Employment Rate
2.5%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
66.48%
Born in Jefferson County, Idaho
95.68%
Native Born
4.32%
Foreign Born
2.67%
Non Citizen
1.66%
Naturalized
95.68% of Jefferson County, Idaho residents were born in the United States, with 66.48% having been born in Idaho. 2.67% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.