St. Clair County, IL

Comprehensive housing, income, and cost of living data for St. Clair County, Illinois. Population: 256.8K.

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Median Home Price

$146.0K

Based on 23 cities

Median Household Income

$70.2K

Annual household income

Price-to-Income Ratio

2.1x

Highly affordable

Salary Needed to Buy

$46.9K

30-yr mortgage, 6.5% rate, 20% down

Housing & Finance

Annual Property Tax

$3,533

Average annual amount

Effective Tax Rate

2.42%

Property tax / home value

Monthly Housing Costs

Mortgage (P&I)$738

Property Tax$294

Insurance$60.83

Total Monthly$1,094

Historical Home Prices

2015

$109.9K

2016

$112.0K

+1.9%%

2017

$116.2K

+3.8%%

2018

$121.0K

+4.2%%

2019

$122.7K

+1.4%%

2020

$133.3K

+8.6%%

2021

$146.5K

+9.9%%

2022

$153.1K

+4.5%%

2023

$160.3K

+4.6%%

2024

$163.5K

+2.0%%

2025

$171.1K

+4.7%%

Source: County price history data via Zillow ZHVI

Demographics & Economics

Unemployment Rate

5.3%%

Near national average

Population Density

390

People per square mile

Homicide Rate

17.1

Medium (per 100K residents)

Political Lean (2020)

Competitive

D+0

Racial Demographics

White

59.5%

Black

27.8%

Hispanic

4.9%

Asian

1.5%

Two or More Races

5.5%

Source: Census ACS 2023. Hispanic/Latino ethnicity counted separately from race.

Climate & Environment

Average Temperature

56°F

Annual average

Sunny Days

165

Days per year

Annual Rainfall

42.5"

Inches per year

Natural Disaster Risk

High Risk

Score: 95/100

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