2023 St. Clair County, Illinois Demographics | Data & Analysis
Ready-to-use reports, analytics, and visualizations covering St. Clair County, Illinois, including population, race, income, and more. Based on 2023 American Community Survey Estimates.
St. Clair County, Illinois Key Demographic Statistics (2023 Estimates)
Key demographic statistics for St. Clair County, Illinois summarized from the U.S. Census Bureau's 2023 American Community Survey (ACS).
Source: U.S. Census Bureau, 2023 American Community Survey (ACS) Estimates
St. Clair County, Illinois 2023 Population: Age & Gender Distribution
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the total population of St. Clair County, Illinois is 254,777. The median age of the population in St. Clair County, Illinois is 39.5 years. The median age for males is 38.2 years, and for females it is 40.7 years.
The age distribution of the population in St. Clair County, Illinois by age group is as follows:
| Age Group | Percentage |
|---|---|
| Under 5 years | 5.85% |
| 5–17 years (children) | 17.44% |
| 18–24 years (young adults) | 8.13% |
| 25–34 years | 12.77% |
| 35–54 years | 25.30% |
| 55–64 years | 13.75% |
| 65 years and over (seniors) | 16.77% |
The total dependency ratio in St. Clair County, Illinois is 66.82. The youth dependency ratio is 38.85, and the old-age dependency ratio is 27.97. In demographic terms, the dependency ratio measures the size of the population typically not in the labor force (children under 18 and older adults 65+) relative to the working age (18-64) population. A higher ratio indicates a greater financial and social burden on the working population to support the non-working age groups.
What is the Racial and Ethnic Breakdown of St. Clair County, Illinois?
The racial makeup and ethnic composition (racial demographics) of St. Clair County, Illinois is detailed below, based on the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates.
The Diversity Index for St. Clair County, Illinois is calculated at 56.33, suggesting a moderate level of racial and ethnic diversity. This index measures the probability that two people chosen at random will be from different racial or ethnic groups.
The following table provides the breakdown of the population of St. Clair County, Illinois by race and ethnicity:
| Racial/Ethnic Group | Percentage |
|---|---|
| White Alone (Non-Hispanic) | 59.47% |
| Black/African American Alone | 27.81% |
| Two or More Races | 5.49% |
| Hispanic or Latino (Any Race) | 4.95% |
| Asian Alone | 1.54% |
| Some Other Race Alone | 0.50% |
| American Indian and Alaska Native Alone | 0.22% |
| Native Hawaiian or Other Pacific Islander Alone | 0.02% |
St. Clair County, Illinois 2023 Demographics: Household Income Distribution
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the median household income in St. Clair County, Illinois over the past 12 months, adjusted for 2023 inflation, was $70,178. This figure is based on a total of 101,273 households.
The distribution of household income in St. Clair County, Illinois across various income brackets is as follows:
| Income Range | Percentage of Households |
|---|---|
| Less than $20,000 | 12.69% |
| $20,000 to $34,999 | 11.87% |
| $35,000 to $49,999 | 12.47% |
| $50,000 to $74,999 | 15.95% |
| $75,000 to $149,999 | 28.98% |
| $150,000 or more | 18.05% |
St. Clair County, Illinois 2023 Demographics: Property Value Distribution
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the distribution of property values for owner-occupied housing units in St. Clair County, Illinois is based on a total of 68,653 properties.
The property value distribution in St. Clair County, Illinois across various value brackets is as follows:
| Property Value Range | Percentage of Properties |
|---|---|
| Less than $25,000 | 5.52% |
| $25,000 to $49,999 | 6.61% |
| $50,000 to $99,999 | 16.23% |
| $100,000 to $199,999 | 30.62% |
| $200,000 to $499,999 | 37.67% |
| $500,000 to $999,999 | 3.24% |
| $1,000,000 or more | 0.12% |
Educational Attainment in St. Clair County, Illinois (2023 Data)
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the educational attainment data covers the population 25 years and older in St. Clair County, Illinois, totaling 174,733 individuals.
A significant portion of the population, 92.74%, has attained a high school diploma or higher. Furthermore, the percentage of individuals who hold a Bachelor's Degree or a higher professional/graduate degree is 30.74%.
The detailed breakdown by educational level is presented below:
| Educational Attainment Level | Percentage of Population 25+ |
|---|---|
| Less than high school graduate | 7.26% |
| High school graduate (incl. equivalency) | 27.01% |
| Some college or associate's degree | 34.99% |
| Bachelor's Degree | 17.57% |
| Graduate or professional degree | 13.18% |
What is the Health Insurance Coverage Rate in St. Clair County, Illinois?
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the health insurance coverage data for St. Clair County, Illinois shows that 5.4% of the population lacks health insurance coverage. This represents 13,498 individuals out of a total population of 248,186 people.
The uninsured rates vary significantly by age group. Young adults (18-34 years) have uninsured rates of 13.8% for males and 9.6% for females. In the 35-64 age bracket, 8.2% of males and 4.5% of females are uninsured.
Children under 18 and seniors aged 65+ generally have higher coverage rates due to public programs like Medicaid/CHIP and Medicare. In St. Clair County, Illinois, uninsured rates for children are 3.6% for males and 2.4% for females, while seniors have rates of 0.2% for males and 0.1% for females.
| Age Group | Male Uninsured % | Female Uninsured % |
|---|---|---|
| Under 18 | 3.6% | 2.4% |
| 18-34 years | 13.8% | 9.6% |
| 35-64 years | 8.2% | 4.5% |
| 65+ years | 0.2% | 0.1% |
St. Clair County, Illinois 2023 Population by Nativity and Citizenship Status
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the nativity and citizenship data for St. Clair County, Illinois shows that 98.6% of the population are U.S. citizens. This includes both native-born and naturalized citizens, representing 251,246 individuals out of a total population of 254,777 people.
The nativity breakdown reveals diverse origins: 95.2% were born in the United States, 0.2% were born in Puerto Rico or U.S. Island Areas, and 1.4% were born abroad of American parent(s).
Among the foreign-born population, 1.8% of the total population have become naturalized U.S. citizens (4,625 individuals), while 1.4% are non-citizens (3,531 individuals).
| Nativity/Citizenship Status | Percentage |
|---|---|
| Born in the United States | 95.2% |
| Born in Puerto Rico or U.S. Island Areas | 0.2% |
| Born abroad of American parent(s) | 1.4% |
| U.S. citizen by naturalization | 1.8% |
| Not a U.S. citizen | 1.4% |
| Total U.S. Citizens | 98.6% |
St. Clair County, Illinois 2023 Demographics: Means of Transportation to Work
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the commuting patterns for St. Clair County, Illinois show that 84.6% of workers commute by car, truck, or van. This represents 100,281 workers out of a total workforce of 118,534 people.
Public transportation usage stands at 1.9% (2,245 workers), which includes buses, subways, light rail, commuter trains, and ferries, but excludes taxicabs. Active transportation methods include walking (1.5%) and bicycling (0.1%).
10.9% of workers in St. Clair County, Illinois report working from home. An additional 1.0% use other means such as taxicabs, motorcycles, or other forms of transportation. These alternative commuting patterns reflect changing work arrangements and transportation preferences in the modern workforce.
| Transportation Method | Percentage | Number of Workers |
|---|---|---|
| Car, truck, or van | 84.6% | 100,281 |
| Public transportation | 1.9% | 2,245 |
| Bicycle | 0.1% | 156 |
| Walked | 1.5% | 1,825 |
| Taxicab, motorcycle, or other means | 1.0% | 1,161 |
| Worked from home | 10.9% | 12,866 |
| Total Workers | - | 118,534 |
St. Clair County, Illinois 2023 Demographics: Employment by Class of Worker
According to the U.S. Census Bureau's 2023 American Community Survey (ACS) Estimates, the civilian employed population aged 16 and over in St. Clair County, Illinois totals 117,273 workers. Of these, 57,736 (49.2%) are male and 59,537 (50.8%) are female.
The employment distribution by class of worker in St. Clair County, Illinois is as follows:
| Employment Class | Male Workers | Female Workers |
|---|---|---|
| Private For-Profit | 43,092 (36.7%) | 38,863 (33.1%) |
| Private Non-Profit | 3,012 (2.6%) | 7,499 (6.4%) |
| Government (All Levels) | 9,058 (7.7%) | 10,831 (9.2%) |
| • Local Government | 3,554 | 5,447 |
| • State Government | 1,455 | 2,131 |
| • Federal Government | 4,049 | 3,253 |
| Self-Employed | 2,552 (2.2%) | 2,223 (1.9%) |
Class of worker categorizes employed civilians by their employment arrangement. Private sector workers are employed by for-profit or non-profit companies. Government workers include those employed at local, state, or federal levels. Self-employed workers operate their own unincorporated businesses. Understanding the class of worker distribution provides insights into the economic structure and employment diversity of St. Clair County, Illinois.
Frequently Asked Questions (FAQs)
The age breakdown for the population of St. Clair County, Illinois is detailed below, showing the percentage of the total population for each group:
| Age Group | Percentage |
|---|---|
| Under 5 years | 5.85% |
| 5–17 years (children) | 17.44% |
| 18–24 years (young adults) | 8.13% |
| 25–34 years | 12.77% |
| 35–54 years | 25.30% |
| 55–64 years | 13.75% |
| 65 years and over (seniors) | 16.77% |