St. Clair County, IL Competitor Saturation & Market Analysis

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Analyze competitor saturation, customer density, and market opportunities in St. Clair County, Illinois.

You 9/24/26, 8:52 PM

Show me competitor saturation and resident-to-business ratios in St. Clair County.

Map AI 9/24/26, 8:52 PM

St. Clair County has businesses across 9 categories. Recreation leads with a Customer Density of ~202 residents per business — a higher number signals less competition.

Businesses by Category in St. Clair County

Source: OpenStreetMap contributors

Business Density Compared With Illinois and the U.S.

Area	Businesses	Residents per Business
St. Clair County	3,043	83
Illinois	140,281	90
United States	3,293,485	102

St. Clair County has about 83 residents per business, compared to 90 in Illinois. That makes the local market more saturated and more competitive than the overall market in Illinois.

Map: Competitor Density & Market Saturation Across Illinois

Total businesses per county — darker means higher competitor density

St. Clair County

Click a county to open it Explore the map →

Businesses per county

Thinking of Opening a Restaurant in St. Clair County?

Food and dining is the most contested category on most of these maps. See the restaurant market size for this county, including how many diners each existing place serves and a free revenue estimate for a new one.

Find Underserved Markets With AI Competitor Analysis

In commercial real estate, local businesses are tracked as Points of Interest (POIs). The AI lets you run a competitive analysis, spot market saturation in real-time, and see a map of local businesses — so you can see exactly where customer demand is underserved.

St. Clair County, IL Businesses Compared With Nearby Counties

St. Clair County, IL is the 2nd largest of the 5 counties compared here, 253,661 residents against a local median of 35,993. St. Clair County, IL's businesses, at 3,079, runs more than 8 times the 356 typical of the counties around it.

Businesses per 10k people tells the same story from another angle: 121.4 against a local median of 99.5, 22% above it. The counties themselves spread 2,988 on businesses, so St. Clair County, IL sits at one end of an already wide local range rather than apart from it. St. Clair County, IL has the 2nd highest businesses of the 5 areas compared here.

Area	Population	Businesses	Businesses per 10k people
St. Clair County, IL	253,661	3,079 #2/5	121.4 #1/5
Monroe County, IL	35,033	408	116.6
Madison County, IL	264,024	3,114	118.0
Randolph County, IL	30,051	126	42.1
Clinton County, IL	36,954	304	82.4

Frequently Asked Questions

Common questions about competitor saturation and points of interest in St. Clair County, Illinois.

Where can I find competitor saturation and points of interest analysis for St. Clair County, Illinois?

St. Clair County, Illinois competitor saturation analysis shows 3,043 points of interest across 9 categories according to OpenStreetMap data.

How can I do a competitive analysis of businesses in St. Clair County, Illinois?

Map AI Chat lets you run a competitive analysis and measure competitor density and market saturation, showing resident-to-business ratios across different categories in St. Clair County, Illinois.

How does business density in St. Clair County, Illinois compare to Illinois?

St. Clair County, Illinois has about 83 residents per business, compared to 90 in Illinois. That makes the local market more competitive than Illinois.

Is there a map of local businesses in St. Clair County, Illinois?

Yes. Map AI shows an interactive map of local business and competitor density in St. Clair County, Illinois, colored by how many points of interest each area has, so you can spot underserved markets at a glance.

What is the most common type of business in St. Clair County, Illinois?

The most common business category in St. Clair County, Illinois is Recreation, with about 202 residents for every business in that category.