Mercer County, Illinois's estimated 2024 population is 15,441 with a growth rate of -0.3% in the past year according to the most recent United States census data. Mercer County, Illinois is the 68th largest county in Illinois. The 2010 population was 16,410 and has seen a growth of -5.9% since that time.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 15,211 | -46 | -0.3% |
| 2028 | 15,257 | -46 | -0.3% |
| 2027 | 15,303 | -46 | -0.3% |
| 2026 | 15,349 | -46 | -0.3% |
| 2025 | 15,395 | -46 | -0.3% |
| 2024 | 15,441 | -46 | -0.3% |
| 2023 | 15,487 | -46 | -0.3% |
| 2022 | 15,533 | -47 | -0.3% |
| 2021 | 15,580 | -52 | -0.33% |
| 2020 | 15,632 | 142 | 0.92% |
| 2019 | 15,490 | -82 | -0.53% |
| 2018 | 15,572 | -46 | -0.29% |
| 2017 | 15,618 | 7 | 0.04% |
| 2016 | 15,611 | -137 | -0.87% |
| 2015 | 15,748 | -154 | -0.97% |
| 2014 | 15,902 | -175 | -1.09% |
| 2013 | 16,077 | -88 | -0.54% |
| 2012 | 16,165 | -155 | -0.95% |
| 2011 | 16,320 | -90 | -0.55% |
| 2010 | 16,410 | 0 | 0% |
| 1990 | 17,290 | -1,996 | -10.35% |
| 1980 | 19,286 | 1,992 | 11.52% |
| 1970 | 17,294 | 145 | 0.85% |
| 1960 | 17,149 | -225 | -1.3% |
| 1950 | 17,374 | -327 | -1.85% |
| 1940 | 17,701 | 1,060 | 6.37% |
| 1930 | 16,641 | -2,159 | -11.48% |
| 1920 | 18,800 | -923 | -4.68% |
| 1910 | 19,723 | -1,222 | -5.83% |
| 1900 | 20,945 | 2,400 | 12.94% |
| 1890 | 18,545 | -957 | -4.91% |
| 1880 | 19,502 | 733 | 3.91% |
| 1870 | 18,769 | 3,727 | 24.78% |
| 1860 | 15,042 | 9,796 | 186.73% |
| 1850 | 5,246 | 2,894 | 123.04% |
| 1840 | 2,352 | 2,326 | 8946.15% |
| 1830 | 26 | -15,185 | -99.83% |
White
Two or more races
Other race
Black or African American
Asian
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 6,435 | 2.41 | 79.5 | 20.5 |
| Married | 3,810 | 2.96 | 88.8 | 11.2 |
| Non Family | 1,968 | 1.13 | 63.7 | 36.3 |
| Female | 420 | 3 | 60.2 | 39.8 |
| Male | 237 | 3.19 | 94.5 | 5.5 |
2.92
Average Family Size
2.41
Average Household Size
79.5%
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 84.78%.
All
Male
Female
$43,720
Average Earnings
$57,823
Average Male
$34,592
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
97.45% of Mercer County, Illinois residents speak only English, while 2.55% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.68% of the population.
rate
8.02%
Overall Poverty Rate
5.93%
Male Poverty Rate
10.16%
Female Poverty Rate
The race most likely to be in poverty in Mercer County, Illinois is Black, with 78.05% below the poverty level.
The race least likely to be in poverty in Mercer County, Illinois is White, with 7.64% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.61%. Among those working part-time, it was 12.76%, and for those that did not work, the poverty rate was 11.68%.
Married
Widowed
Divorced
Separated
NeverMarried
60.4%
Overall Marriage Rate
59.6%
Male Marriage Rate
61.1%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, 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
3.77%
Veteran Poverty Rate
37.68%
Veteran Disability Rate
LaborForceParticipation
59.8%
Labor Force Participation
57.8%
Employment Rate
3.3%
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
70.05%
Born in Mercer County, Illinois
98.88%
Native Born
1.12%
Foreign Born
0.22%
Non Citizen
0.9%
Naturalized
98.88% of Mercer County, Illinois residents were born in the United States, with 70.05% having been born in Illinois. 0.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.