Jefferson is a city located in Greene County and Guthrie County Iowa. Jefferson has a 2024 population of 4,165. It is also the county seat of Greene County. Jefferson is currently declining at a rate of -0.1% annually and its population has decreased by -0.38% since the most recent census, which recorded a population of 4,181 in 2020.
The average household income in Jefferson is $68,656 with a poverty rate of 7.84%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Jefferson is 47.7 years, 41.7 years for males, and 56.1 years for females.
According to the most recent ACS, the racial composition of Jefferson was:
White
Two or more races
Black or African American
Asian
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 2,001 | 2.03 | 71.6 | 28.4 |
| Non Family | 976 | 1.1 | 65.1 | 34.9 |
| Married | 750 | 2.75 | 83.6 | 16.4 |
| Female | 244 | 3.06 | 62.7 | 37.3 |
| Male | 31 | 5.61 | 54.8 | 45.2 |
2.86
Average Family Size
2.03
Average Household Size
71.6%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
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
The highest rate of high school graduation is among asian people with a rate of 100%.
The highest rate of bachelors degrees is among asian people with a rate of 100%.
All
Male
Female
$39,707
Average Earnings
$57,885
Average Male
$25,368
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
95.4% of Jefferson residents speak only English, while 4.6% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.17% of the population.
rate
7.84%
Overall Poverty Rate
4.56%
Male Poverty Rate
10.61%
Female Poverty Rate
The race most likely to be in poverty in Jefferson is Other, with 29.63% below the poverty level.
The race least likely to be in poverty in Jefferson is Hispanic, with 3.76% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.66%. Among those working part-time, it was 8.72%, and for those that did not work, the poverty rate was 15.94%.
Married
Widowed
Divorced
Separated
NeverMarried
45.9%
Overall Marriage Rate
53.9%
Male Marriage Rate
39.7%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 20-34.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
5.93%
Veteran Poverty Rate
28.81%
Veteran Disability Rate
LaborForceParticipation
57.4%
Labor Force Participation
56.2%
Employment Rate
2.1%
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
77.76%
Born in Jefferson
98.35%
Native Born
1.65%
Foreign Born
0.19%
Non Citizen
1.46%
Naturalized
98.35% of Jefferson residents were born in the United States, with 77.76% having been born in Iowa. 0.19% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 4,145 | -4 | -0.1% |
| 2028 | 4,149 | -4 | -0.1% |
| 2027 | 4,153 | -4 | -0.1% |
| 2026 | 4,157 | -4 | -0.1% |
| 2025 | 4,161 | -4 | -0.1% |
| 2024 | 4,165 | -4 | -0.1% |
| 2023 | 4,169 | -4 | -0.1% |
| 2022 | 4,173 | 3 | 0.07% |
| 2021 | 4,170 | -11 | -0.26% |
| 2020 | 4,181 | 82 | 2% |
| 2019 | 4,099 | -47 | -1.13% |
| 2018 | 4,146 | 2 | 0.05% |
| 2017 | 4,144 | -23 | -0.55% |
| 2016 | 4,167 | 30 | 0.73% |
| 2015 | 4,137 | -84 | -1.99% |
| 2014 | 4,221 | -39 | -0.92% |
| 2013 | 4,260 | -15 | -0.35% |
| 2012 | 4,275 | -69 | -1.59% |
| 2011 | 4,344 | -11 | -0.25% |
| 2010 | 4,355 | -271 | -5.86% |
| 2000 | 4,626 | 334 | 7.78% |
| 1990 | 4,292 | -562 | -11.58% |
| 1980 | 4,854 | 119 | 2.51% |
| 1970 | 4,735 | 165 | 3.61% |
| 1960 | 4,570 | 244 | 5.64% |
| 1950 | 4,326 | 238 | 5.82% |
| 1940 | 4,088 | 657 | 19.15% |
| 1930 | 3,431 | 15 | 0.44% |
| 1920 | 3,416 | 815 | 31.33% |
| 1900 | 2,601 | 0 | 0% |