2017 Growth Rate
-0.02%
County Website
State
Founded
February 28, 1839
County Seat
Jerseyville
Lat/Lng
Jersey County, Illinois's estimated population is 21,901 with a growth rate of -0.02% in the past year according to the most recent United States census data. Jersey County, Illinois is the 53rd largest county in Illinois.
| Year | Population | Growth | Growth Rate |
| 2018 | 21,847 | -54 | -0.25% |
| 2017 | 21,901 | -5 | -0.02% |
| 2016 | 21,906 | -317 | -1.43% |
| 2015 | 22,223 | -244 | -1.09% |
| 2014 | 22,467 | -108 | -0.48% |
| 2013 | 22,575 | -108 | -0.48% |
| 2012 | 22,683 | -169 | -0.74% |
| 2011 | 22,852 | -118 | -0.51% |
| 2010 | 22,970 | 2,431 | 11.84% |
| 1990 | 20,539 | 1 | 0.00% |
| 1980 | 20,538 | 2,046 | 11.06% |
| 1970 | 18,492 | 1,469 | 8.63% |
| 1960 | 17,023 | 1,759 | 11.52% |
| 1950 | 15,264 | 1,628 | 11.94% |
| 1940 | 13,636 | 1,080 | 8.60% |
| 1930 | 12,556 | -126 | -0.99% |
| 1920 | 12,682 | -1,272 | -9.12% |
| 1910 | 13,954 | -658 | -4.50% |
| 1900 | 14,612 | -198 | -1.34% |
| 1890 | 14,810 | -732 | -4.71% |
| 1880 | 15,542 | 488 | 3.24% |
| 1870 | 15,054 | 3,003 | 24.92% |
| 1860 | 12,051 | 4,697 | 63.87% |
| 1850 | 7,354 | 2,819 | 62.16% |
| 1840 | 4,535 | 0.00% |
| Race | Population | Percentage |
| White | 21,512 | 96.84% |
| Two or More Races | 412 | 1.85% |
| Black or African American | 103 | 0.46% |
| Asian | 88 | 0.40% |
| Some Other Race | 50 | 0.23% |
| American Indian and Alaska Native | 28 | 0.13% |
| Native Hawaiian and Other Pacific Islander | 22 | 0.10% |
42.5
41
43.3
There are 17,492 adults, (3,988 of whom are seniors) in Jersey County, Illinois.
Female
11,360
51.14%
Male
10,855
48.86%
| Type | Count | Average Size | Owned |
| All | 8,831 | 2.4 | 81.3 |
| Married | 4,953 | 2.96 | 90.3 |
| Non Family | 2,624 | 1.16 | 70.8 |
| Female | 958 | 2.78 | 58.9 |
| Male | 296 | 2.89 | 97 |
| Education Attained | Count | Percentage |
| Less Than 9th Grade | 389 | 2.55% |
| 9th to 12th Grade | 927 | 6.07% |
| High School Graduate | 5,466 | 35.80% |
| Some College | 3,547 | 23.23% |
| Associates Degree | 1,926 | 12.62% |
| Bachelors Degree | 1,970 | 12.90% |
| Graduate Degree | 1,042 | 6.83% |
| Name | Total | High School | Bachelors |
| White | 14,942 | 13,681 | 2,898 |
| Hispanic | 185 | 158 | 58 |
| Multiple Races | 47 | 47 | 17 |
| Other Race | 46 | 42 | |
| Asian | 42 | 42 | 42 |
| Black | 34 | 34 | 8 |
| Native American | 28 |
The highest rate of high school graduation is among black people with a rate of 100.00%.
The highest rate of bachelors degrees is among asian people with a rate of 100.00%.
$38,198
Average Earnings
$49,230
Average Male
$29,800
Average Female
97.53% of Jersey County, Illinois residents speak only English, while 2.47% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.13% of the population.
| Name | Total | In Poverty | Poverty Rate |
| White | 20,512 | 1,880 | 9.17% |
| Hispanic | 270 | 65 | 24.07% |
| Multiple | 389 | 43 | 11.05% |
| Black | 42 | 21 | 50.00% |
9.45%
Overall Poverty Rate
7.60%
Male Poverty Rate
11.21%
Female Poverty Rate
The race most likely to be in poverty in Jersey County, Illinois is Black, with 50.00% below the poverty level.
The race least likely to be in poverty in Jersey County, Illinois is White, with 9.17% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.79%. Among those working part-time, it was 9.58%, and for those that did not work, the poverty rate was 16.33%.
55.6%
Overall Marriage Rate
59.1%
Male Marriage Rate
52.3%
Female Marriage Rate
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.
| Name | Veterans | % of Total |
| White | 2,013 | 11.81% |
| Hispanic | 18 | 9.28% |
| 2 or More | 11 | 5.19% |
| Black | 8 | 8.89% |
5.71%
Veteran Poverty Rate
22.30%
Veteran Disability Rate
61.4%
Labor Force Participation
57.5%
Employment Rate
6.3%
Unemployment Rate
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
98.44%
Native Born
1.56%
Foreign Born
0.83%
Non Citizen
98.44% of Jersey County, Illinois residents were born in the United States, with 79.41% having been born in Illinois. 0.83% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.
| City | 2010 Census | 2016 Estimated | Growth | Growth Rate |
| Jerseyville | 8465 | 8336 | -129 | -1.52% |
| Brighton | 2254 | 2185 | -69 | -3.06% |
| Grafton | 674 | 640 | -34 | -5.04% |
| Elsah | 673 | 631 | -42 | -6.24% |
| Medora | 419 | 403 | -16 | -3.82% |
| Fieldon | 239 | 225 | -14 | -5.86% |
| Otterville | 126 | 118 | -8 | -6.35% |
| Fidelity | 114 | 107 | -7 | -6.14% |