St. Clair County, Illinois Nativity & Citizenship Status (2024)

Place of birth and citizenship status analysis for St. Clair County, Illinois

Demographics Overview

Race & Ethnicity

Household Income

Nativity & Citizenship

Health Insurance

Class of Worker

St. Clair County, Illinois Nativity & Citizenship Indicators (2024)

Native Born

96.7%

Foreign Born

3.3%

Naturalized

1.8%

US Citizens

98.5%

St. Clair County, Illinois Nativity & Citizenship Distribution

Nativity Treemap for — Figure 1: Proportional distribution of population by place of birth in .

St. Clair County, Illinois Historical Nativity Trends (2010–2024)

Historical nativity trends for — Figure 2: Evolution of nativity categories and total population volume from 2010 to 2024.

St. Clair County, Illinois Population & Nativity History

**Table 1:** Comparison of total population and nativity percentages over time.
Year	Total Pop	Foreign Born	Native Born
2024	253,694	3.3%	96.7%
2023	254,777	3.2%	96.8%
2022	256,791	3.2%	96.8%
2021	258,597	3.1%	96.9%
2020	261,186	3.1%	96.9%
2019	262,338	3.1%	96.9%
2018	263,463	2.9%	97.1%
2017	264,433	2.8%	97.2%
2016	265,569	2.6%	97.4%
2015	267,029	2.7%	97.3%
2014	268,415	2.7%	97.3%
2013	268,939	2.7%	97.3%
2012	268,873	2.6%	97.4%
2011	268,086	2.8%	97.2%
2010	266,727	2.4%	97.6%

Nativity & Citizenship FAQs for St. Clair County, Illinois

Approximately 3.3% of residents in St. Clair County, Illinois were born outside the United States.

The vast majority of residents, roughly 98.5%, are U.S. citizens (including both native-born and naturalized citizens).

Compare Nativity Across Other Locations