Jefferson County Summary

Life in Jefferson County research summary. HomeSnacks has been researching the quality of life in Jefferson County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Jefferson County:

  • The population in Jefferson County is 37,043.

  • The median home value in Jefferson County is $107,555.

  • The median income in Jefferson County is $58,384.

  • The median rent in Jefferson County is $838.

  • The unemployment rate in Jefferson County is 6.5%.

  • The poverty rate in Jefferson County is 14.1%.

  • The average high in Jefferson County is 74.2° and there are 107.3 inches of rainfall annually.

Cities & Towns in Jefferson County

List Of Cities & Towns in Jefferson County

Mount Vernon, IL Population 14,740

Centralia, IL Population 12,096

Ina, IL Population 1,754

Woodlawn, IL Population 635

Bluford, IL Population 555

Dix, IL Population 544

Bonnie, IL Population 403

Waltonville, IL Population 371

Belle Rive, IL Population 324

Opdyke, IL Population 259

Nason, IL Population 246

Map Of Jefferson County

Jefferson County, IL Weather

  • The average high in Jefferson County is 74.2°.

  • There are 80.85 nice days each year.

  • Expect an average of 107.3 inches of rain each year with 5.0 inches of snow.

  • There is an average of 5:13 hours of sun each day in Jefferson County.

StatJefferson County
Mean High74.2
Nice Days80.85
Rainfall107.3
Snowfall5.0
Sunny_hours5:13
74.2°
Average High
107.3
Inches of Rain

Jefferson County Photos

Downtown Centralia Il
Source: Wikipedia User Jon Platek | CC BY-SA 3.0
Centralia Illinois Bell Tower
Source: Wikipedia User ThePhotoRun | CC BY-SA 3.0
Mount Vernon Center
Source: Wikipedia User Hans Schönverrückt | GFDL
Mount Vernonc Illinois City Hall
Source: Wikipedia User Robert Lawton | CC BY 2.5
Th District Appellate Court
Source: Wikipedia User Robert Lawton | CC BY 2.5

Jefferson County Demographics

Population over time in Jefferson County

The current population in Jefferson County is 37,043. The population has decreased -1.6% from 2019.

Year Population % Change
2022 37,362 -1.1%
2021 37,774 -0.6%
2020 37,985 -

Gender in Jefferson County

  • Jefferson County is 48.4% female with 17,946 female residents.

  • Jefferson County is 51.6% male with 19,096 male residents.

Female
48.4% (17,946)
Male
51.6% (19,096)
Gender Jefferson County IL USA
Female 48.4% 50.5% 50.4%
Male 51.6% 49.5% 49.6%

Race / Ethnicity in Jefferson County

Jefferson County is:

  • 84.3% White with 31,235 White residents.

  • 6.5% African American with 2,406 African American residents.

  • 0.2% American Indian with 67 American Indian residents.

  • 1.0% Asian with 361 Asian residents.

  • 0.0% Hawaiian with 6 Hawaiian residents.

  • 0.2% Other with 75 Other residents.

  • 4.9% Two Or More with 1,812 Two Or More residents.

  • 2.9% Hispanic with 1,081 Hispanic residents.

White
84.3% (31,235)
African American
6.5% (2,406)
American Indian
0.2% (67)
Asian
1.0% (361)
Hawaiian
0.0% (6)
Other
0.2% (75)
Two Or More
4.9% (1,812)
Hispanic
2.9% (1,081)

Table: Jefferson County By Race

Race Jefferson County IL USA
White 84.3% 59.6% 58.9%
African American 6.5% 13.7% 12.1%
American Indian 0.2% 0.1% 0.6%
Asian 1.0% 5.7% 5.7%
Hawaiian 0.0% 0.0% 0.2%
Other 0.2% 0.3% 0.4%
Two Or More 4.9% 2.8% 3.5%
Hispanic 2.9% 17.8% 18.7%

Household Income For Jefferson County, Illinois

  • 6.0% of households in Jefferson County earn Less than $10,000.

  • 4.3% of households in Jefferson County earn $10,000 to $14,999.

  • 9.1% of households in Jefferson County earn $15,000 to $24,999.

  • 9.3% of households in Jefferson County earn $25,000 to $34,999.

  • 13.8% of households in Jefferson County earn $35,000 to $49,999.

  • 19.6% of households in Jefferson County earn $50,000 to $74,999.

  • 13.8% of households in Jefferson County earn $75,000 to $99,999.

  • 14.5% of households in Jefferson County earn $100,000 to $149,999.

  • 5.3% of households in Jefferson County earn $150,000 to $199,999.

  • 4.4% of households in Jefferson County earn $200,000 or more.

Less than $10,000
6.0% (2,213)
$10,000 to $14,999
4.3% (1,581)
$15,000 to $24,999
9.1% (3,366)
$25,000 to $34,999
9.3% (3,446)
$35,000 to $49,999
13.8% (5,111)
$50,000 to $74,999
19.6% (7,249)
$75,000 to $99,999
13.8% (5,121)
$100,000 to $149,999
14.5% (5,376)
$150,000 to $199,999
5.3% (1,945)
$200,000 or more
4.4% (1,631)
Income Jefferson County IL USA
Less than $10,000 6.0% 5.3% 4.9%
$10,000 to $14,999 4.3% 3.5% 3.8%
$15,000 to $24,999 9.1% 6.7% 7.0%
$25,000 to $34,999 9.3% 7.1% 7.4%
$35,000 to $49,999 13.8% 10.1% 10.7%
$50,000 to $74,999 19.6% 15.4% 16.1%
$75,000 to $99,999 13.8% 12.9% 12.8%
$100,000 to $149,999 14.5% 17.6% 17.1%
$150,000 to $199,999 5.3% 9.4% 8.8%
$200,000 or more 4.4% 12.1% 11.4%

Highest level of educational attainment in Jefferson County for adults over 25

  • 3.0% of adults in Jefferson County completed < 9th grade.

  • 7.0% of adults in Jefferson County completed 9-12th grade.

  • 32.0% of adults in Jefferson County completed high school / ged.

  • 27.0% of adults in Jefferson County completed some college.

  • 13.0% of adults in Jefferson County completed associate's degree.

  • 12.0% of adults in Jefferson County completed bachelor's degree.

  • 5.0% of adults in Jefferson County completed master's degree.

  • 1.0% of adults in Jefferson County completed professional degree.

  • 0.0% of adults in Jefferson County completed doctorate degree.

< 9th Grade
2% (1,111)
9-12th Grade
7% (2,593)
High School / GED
32% (11,853)
Some College
27% (10,001)
Associate's Degree
13% (4,815)
Bachelor's Degree
12% (4,445)
Master's Degree
5% (1,852)
Professional Degree
1% (370)
Doctorate Degree
0% (0)
Education Jefferson County IL USA
< 9th Grade 2% 6% 3%
9-12th Grade 7% 5% 6%
High School / GED 32% 25% 26%
Some College 27% 20% 20%
Associate's Degree 13% 8% 9%
Bachelor's Degree 12% 22% 21%
Master's Degree 5% 11% 10%
Professional Degree 1% 2% 2%
Doctorate Degree 0% 1% 2%

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