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St. Clair County, IL · Google Ads Management
Google Ads Management in St. Clair County: Win Customers From Competitors
St. Clair County is not gaining new residents quickly. We build and run Google Ads campaigns for St. Clair County businesses for one flat monthly fee, with no contract to sign. Below is what public data says about the field you would be bidding in.
Snapshot
St. Clair County's Ad Competition Index Score and What Sits Behind It
Ad Competition Index
52.1/ 100
Sitting at rank 793 of 1,822 counties with 20,000+ residents and also 287 of the 400 markets we cover. The higher the score, the more local businesses are competing for the same searches. How the score works
We grade every U.S. county-equivalent with 20,000 or more residents on how many ad-heavy local businesses (like lawyers, dentists, contractors, agents and similar) compete for the same customers. St. Clair County scores 52.1, which is close to the middle of the pack.
Two things stand out: St. Clair County is a county whose population is flat or shrinking, and it is also a county with an unusually high share of bigger (20+ employee) businesses in ad-heavy categories. Eight measures below show where it stands among all counties.
- Population movement since 2020 -2.5% A slower pace than 92% of counties
- Household income at the midpoint (2023 est.) $66,007 Behind than 51% of counties
- Local advertisers' business locations per 10,000 residents 34.6 More packed than 54% of counties
- Change in those businesses, 2017 to 2022 -3.8% Slower growth than 80% of counties
- Share of them with 20 or more employees 6% Bigger share than 84% of counties
- New-home permits in 2025, per 10,000 people 17.2 Fewer new homes than 68% of counties
- This year's housing permits against the same months last year -15.9% Weaker than 72% of counties
- Residents who live outside a city or town 20% Fewer of them than 89% of counties
Each bar places St. Clair County against all 1,822 U.S. counties with 20,000 or more residents. Source data: U.S. Census Bureau Population Estimates, County Business Patterns (2017 and 2022), Census income estimates and the Building Permits Survey.
Market profile
How a Slow-Growth Market Changes Your Google Ads Plan in St. Clair County
St. Clair County has slipped 2.5% in population since the 2020 Census, a weaker trend than 92% of comparable counties, and now has 251,018 residents. In a market without a steady stream of newcomers, growth has to come from winning customers who already have a provider, which puts more weight on your offer, your reviews and your landing page.
No single place dominates St. Clair County: the largest, Belleville, holds about 16% of residents. Larger places include Belleville (40,726), O'Fallon (31,968), East St. Louis (17,642), Cahokia Heights (17,114) and Fairview Heights (16,125). Every one of them is its own market, so we build the campaign around the places you serve.
50,146 people, or 20% of residents, live outside any incorporated place. Radius and ZIP targeting reach them where city-only targeting would not.
Where demand is heading
St. Clair County Housing Permits Since 2022: Down From the High, Still Slowing This Year
Housing units authorized by building permits. Data: the U.S. Census Bureau's Building Permits Survey (annual county files, with the year-to-date bars covering the same months in each year). A permit is an authorization, not a finished home.
St. Clair County authorized 852 housing units in 2022 and 433 in 2025, about 49% fewer; 2025 still works out to 17.2 units per 10,000 residents, less than in 68% of counties. For January through August, permits are running at 301 against 358 a year earlier (−15.9%).
In St. Clair County, the construction-linked categories already busiest are landscaping services (1.2x typical) and insurance agencies and brokerages (1.1x typical). People moving into new homes need contractors, insurers, agents and providers, so categories tied to construction feel a swing in permits first. If you work in that space, a turn in permits is a reason to review your budget before the busy stretch, not after.
Who else is in the auction
Which St. Clair County Categories Are Most Crowded, and Which Have Room
This table compares St. Clair County with the typical U.S. county, category by category: locations per 10,000 residents, how that has changed, and how many locations are larger operations.
CategoryBusiness locationsCrowding vs. a typical countyChange from 2017 to 2022Locations with 20+ employees
Law officesMost crowded 123 -15.2% 8
Physicians officesBiggest firms 128 +14.3% 25
Roofing contractors 18 +28.6% 3
Landscaping services 95 -2.1% 3
Insurance agencies and brokerages 101 -14.4% 0
Dentists 77 -11.5% 0
General automotive repair 68 -12.8% 0
Residential remodelers 78 +9.9% 0
Accounting and CPA firms 28 -12.5% 4
Real estate agents and brokersQuickest growth 57 +16.3% 0
Plumbing, heating and air-conditioning contractorsLeast crowded 60 -6.2% 9
Electrical contractors 35 +0% 0
Crowding = employer locations per 10,000 residents divided by the median U.S. county of 20,000+ residents (1.0x is typical; the dark tick marks it). The counts are establishments in County Business Patterns (2017, 2022), which is not the same as active advertisers. See the method
In St. Clair County, the law offices category is the most crowded, with 123 locations at 1.7 times the typical density; the count is down 15.2% since 2017. Physicians offices (128 locations, 1.3x) and landscaping services (95 locations, 1.2x) also sit above a normal county. At the other end, the plumbing, heating and air-conditioning contractors category (60 locations) is below typical density at 0.7x, which can mean more room to win a strong position.
Real estate agents and brokers grew fastest, up 16.3% since 2017 to 57 locations. Law offices went the other way, down 15.2% to 123 locations. The biggest operators sit in physicians offices: 25 of 128 locations have 20 or more employees.
This describes who you are up against, not what a click will cost. Auction costs depend on keywords, ad quality, landing pages and timing, so a crowded category calls for careful planning and a quiet one is an opening, not a quote.
Markets like this one
Six Counties That Resemble St. Clair County
The six counties below are the closest matches to St. Clair County among our 400 markets, measured on size, income, growth, construction and ad-business density combined.
| County | Index | Residents | Population change since 2020 | Ad-business change since 2017 | Permits per 10k, 2025 |
|---|---|---|---|---|---|
| St. Clair County, IL (you are here) | 52.1 | 251,018 | -2.5% | -3.8% | 17.2 |
| Jefferson County, TX | 49.9 | 251,496 | -2% | -9.4% | 13.6 |
| Madison County, IL | 60.1 | 262,752 | -1.2% | -3.2% | 18.3 |
| St. Louis County, MN | 58.5 | 200,514 | +0.1% | +5% | 20.9 |
| Racine County, WI | 51.9 | 196,613 | -0.6% | +14.3% | 23.8 |
| Winnebago County, IL | 63 | 280,922 | -1.5% | +2.1% | 11 |
| Sangamon County, IL | 60.4 | 193,491 | -1.5% | -3.2% | 11.4 |
The six look-alikes are the counties in our 400-market set that sit closest to this one on size, income, growth, construction and ad-business density. Sources are listed above.
Jefferson County, TX is the closest match, scoring 49.9 against St. Clair County's 52.1. Winnebago County, IL is the furthest from it, scoring 63. Racine County, WI's ad-heavy business base changed +14.3% over the period against −3.8% in St. Clair County. If you already advertise in one of these markets, the comparison tells you how similar the competitive field is, not what your results will be.
Communities
The Largest Places in St. Clair County
The Census Bureau's latest estimates, by place. A place is not a service area, but it shows where the largest pools of customers sit.
| City or town | People (2023 estimate) | Portion of county population |
|---|---|---|
| Belleville | 40,726 | 16% |
| O'Fallon | 31,968 | 13% |
| East St. Louis | 17,642 | 7% |
| Cahokia Heights | 17,114 | 7% |
| Fairview Heights | 16,125 | 6% |
| Shiloh | 14,736 | 6% |
Data: U.S. Census Bureau Population Estimates. The list covers cities, towns and census-designated places; where a city crosses into a neighboring county, just the portion inside St. Clair County is counted.
Do the math
A Break-Even Calculator for St. Clair County Advertisers
Break-even is different for every business. Tell the calculator what a new customer is worth and how often a lead turns into one, and you will see the highest cost per lead you can afford, how many customers pay for your month, and how your expected cost per lead stacks up.
Our process
How We Run Google Ads for St. Clair County Businesses
Lay the foundation
We build your campaign on a solid foundation: pages built to turn clicks into calls, keywords, ads, extensions and call and form tracking.
Go live and listen
After launch we keep tuning the account, filtering out irrelevant searches with negative keywords, refining bids and steering toward better leads.
Manage and expand
We lean into the ad groups that are working and try wider keywords to grow your calls compared to before.
Keep refining
We never stop tuning, and we bring down your monthly management fee as your account grows, which improves your return.
Where your ads can run
Run Google, Meta and Bing Ads Together in St. Clair County
Facebook & Instagram Ads
Ads on Facebook and Instagram, set up through Meta, aimed at St. Clair County people who would buy if they saw you.
Bing Ads
Another pool of searchers on Bing, Microsoft Edge and Microsoft's partner network, many of whom never open Google.
PPC, paid search, paid social
Google Ads, PPC, pay-per-click, Facebook ads, Instagram ads, paid ads: the names differ but the idea is the same, you pay when someone clicks and we manage it for St. Clair County businesses on one flat plan.
Most clients start with Google Ads, where intent is highest, and add Facebook and Instagram or Bing once the first campaign is working. One account manager runs all of them.
Management fees
Paid Ads Pricing for St. Clair County Businesses
A single monthly management fee, no contracts, set by the number of platforms we manage. Ad spend is separate and goes straight to the ad platform. Spending more than $10K a month on ads? Call us.
Questions we hear
Google Ads in St. Clair County: Frequently Asked Questions
How much does Google Ads management cost in St. Clair County?
We charge a flat management fee: $895 a month for one platform, $1,595 for two and $2,295 for three, and there is no long-term contract. Ad spend is separate, paid straight to Google, Bing or Meta.
How much should I spend on ads in St. Clair County?
Work from your own numbers instead of a rule of thumb: the calculator above turns your profit per new customer and your close rate into the most you can pay per lead. In St. Clair County, law offices (1.7x) and physicians offices (1.3x) are denser than a typical county, so if you are in one of those categories plan for a busier auction. We size the budget with you before launch and scale as results come in.
Is St. Clair County a competitive market for Google Ads?
About average. St. Clair County scores 52.1 on our Ad Competition Index, ranking 793rd of 1,822 counties with 20,000+ residents and 287th of the 400 markets we cover. Law offices is the densest category here, at 1.7 times the typical county. That rewards consistency: consistent campaigns can claim ground that would be contested in a bigger market.
What kinds of local businesses advertise most in St. Clair County?
Across the twelve ad-heavy categories we track, the largest by employer locations in St. Clair County are physicians offices (128), law offices (123) and insurance agencies and brokerages (101). Measured against a typical county, the most crowded are law offices (1.7x) and physicians offices (1.3x). A big or crowded category does not decide whether ads work for you; it shows how many other businesses may be bidding on the same searches.
How soon will I get calls from Google Ads in St. Clair County?
There is no single answer. A few accounts get calls on day one; the rest need two to four weeks of tuning, more so in busy categories like law offices. At the start we look at which searches triggered your ads and cut the ones that do not fit your business.
Is St. Clair County growing, and does that matter for Google Ads?
St. Clair County has 251,018 residents, −2.5% since the 2020 Census, and 433 housing units were permitted in 2025 (17.2 per 10,000 residents). A shrinking population means most new customers have to be won from competitors. In both cases, ads reach whoever is searching right now, so we keep an eye on these trends when we set budgets.
Can you target only the parts of St. Clair County I serve?
Yes. We can target by city (Belleville, O'Fallon, East St. Louis, Cahokia Heights and others), by ZIP code or by a radius around your location. Around 20% of residents live outside any incorporated place, which is where radius targeting helps.
Do you handle Facebook, Instagram and Bing ads as well as Google?
Yes, we do. On top of Google Ads, we run Bing ads and Meta ads, which run on Facebook and Instagram. Google usually comes first because searchers are ready to act; Bing gives you a second search audience while Facebook and Instagram reach people ahead of their search. You pay by platform count: $895, $1,595 or $2,295 a month.
Am I locked into a contract, and how do I see results?
There is no contract; you can cancel anytime. You work with one dedicated account manager and get monthly reporting on the calls, forms and sales your campaign produces.
Next door
Also Serving the Counties Around St. Clair County
Customers beyond St. Clair County? These are the nearest counties, measured from county center to county center:
- Monroe County, IL: about 19 miles from here, 34,957 people, competition index 70.4
- St. Louis, MO: roughly 21 miles out, 281,754 residents, Ad Competition Index 46.1
- Madison County, IL: roughly 25 miles out, 262,752 residents, index score 60.1
- Clinton County, IL: around 29 miles from here, 36,785 people, index score 59.5
- Washington County, IL: about 29 miles from here, 13,536 residents, index score 48.1
- Randolph County, IL: roughly 29 miles from here, 29,815 residents, competition index 42.2
How it was made
How This St. Clair County Page Was Built
The figures on this page are drawn from public U.S. Census Bureau data, computed the same way for every county, so you can compare St. Clair County with any other market. Client account data is not used, and we do not publish campaign results, since results vary by business.
- Data refreshedOctober 16, 2026
- DataPopulation Estimates (2023), County Business Patterns (2017, 2022), Small Area Income and Poverty Estimates (2023), the Building Permits Survey (2021 to 2026 year to date), Census Gazetteer files.
- MethodThe Ad Competition Index and the numbers derived from it are explained on the method page. See every market in the index.
- Found an error?Noticed a mistake? Email hello@getphound.com and we will check it against the Census source.
Get in Touch
Ready to Grow Your St. Clair County Business With Google Ads?
Tell us what you sell and where in St. Clair County you want to be found. We will walk through a plan that fits your budget. To book a strategy session with our CEO, call 610-825-4363 or email hello@getphound.com.