Jefferson County, Illinois's estimated 2023 population is 36,600 with a growth rate of -0.47% in the past year according to the most recent United States census data. Jefferson County, Illinois is the 38th largest county in Illinois. The 2010 population was 38,827 and has seen a growth of -5.74% since that time.
2.92
Average Family Size
2.42
Average Household Size
71.6%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
96.74% of Jefferson County, Illinois residents speak only English, while 3.26% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.23% of the population.
15.09%
Overall Poverty Rate
11.98%
Male Poverty Rate
18.19%
Female Poverty Rate
The race most likely to be in poverty in Jefferson County, Illinois is Black, with 32.51% below the poverty level.
The race least likely to be in poverty in Jefferson County, Illinois is Asian, with 2.51% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.58%. Among those working part-time, it was 19.14%, and for those that did not work, the poverty rate was 19.94%.
Married
Widowed
Divorced
Separated
NeverMarried
49.3%
Overall Marriage Rate
48.3%
Male Marriage Rate
50.4%
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 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
4.87%
Veteran Poverty Rate
39.15%
Veteran Disability Rate
LaborForceParticipation
57.9%
Labor Force Participation
53.9%
Employment Rate
6.8%
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
80.94%
Born in Jefferson County, Illinois
99.26%
Native Born
1.87%
Foreign Born
0.74%
Non Citizen
1.13%
Naturalized
99.26% of Jefferson County, Illinois residents were born in the United States, with 80.94% having been born in Illinois. 0.74% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.