Google Ads
Put your business first on Google when St. Louis County customers search for what you offer. You pay per click.
St. Louis County, MO · Google Ads Management
Google Ads Management for St. Louis County, MO Businesses in a Crowded Market
Before you spend on ads in St. Louis County, MO, it helps to know the field. St. Louis County, MO has more ad-heavy local businesses for its size than 90% of counties. We manage Google Ads for local businesses on flat monthly plans, no contracts, and we would begin with the numbers below when building yours.
The market in figures
St. Louis County, MO's Ad Competition Index Score and What Sits Behind It
Ad Competition Index
72/ 100
Rank 214 of 1,822 counties with 20,000+ residents and also 82 of the 400 markets we cover. Higher means more local businesses competing for the same searches. How the score works
We score every U.S. county-equivalent with 20,000 or more residents on how many ad-heavy local businesses (including lawyers, dentists, contractors, agents and similar) compete for its residents. St. Louis County, MO scores 72, which is more crowded than most.
Two features set St. Louis County, MO apart from the pack: it is a county with unusually many ad-heavy local businesses for its size, and it is a county with an unusually high share of bigger (20+ employee) businesses in ad-heavy categories. The eight measures that follow place it among every other county.
- Change in population since 2020 -1.7% Behind on growth than 86% of counties
- Median household income (2023 est.) $81,631 Above than 81% of counties
- Local advertisers' business locations per 10,000 residents 52.7 Denser than 90% of counties
- Change in those businesses, 2017 to 2022 -2.4% Behind on growth than 76% of counties
- Share of them that employ 20 or more people 7.6% More of them than 93% of counties
- Housing permits per 10,000 residents in 2025 8 Fewer new homes than 86% of counties
- Housing permits so far this year vs. the same months last year +31.6% Stronger than 79% of counties
- Residents outside any city or town 32% Fewer of them than 78% of counties
Each bar places St. Louis County among 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.
What shapes the market
St. Louis County, MO Packs More Local Advertisers Into Each Search Than Most Counties
Crowded is the right word for St. Louis County, MO. There are 52.7 ad-heavy employer locations per 10,000 residents, a denser field than 90% of counties. When so many local businesses compete, a generic ad disappears; a specific offer, a clear service area and strong reviews do not.
St. Louis County, MO has 987,059 residents, which ranks 51st of 3,143 U.S. counties, and the headcount has shifted −1.7% since the 2020 Census.
The biggest places in St. Louis County, MO are Florissant (51,128), Chesterfield (49,166), Wildwood (34,851), University City (34,096) and Ballwin (30,410). We can aim by city, by ZIP code or by a radius around your location, so a business on one side of the county is not paying for clicks from the other.
32% of residents (315,890 people) live outside any incorporated place. Radius and ZIP targeting reach them where city-only targeting would not.
Who you are bidding against
St. Louis County, MO Competition by Category: Where It Is Crowded and Where It Is Not
Category by category, this table sets St. Louis County, MO against the typical U.S. county: the count per 10,000 residents, the change over time, and how many locations are bigger operations.
Business typeLocationsDensity vs. a typical countyShift, 2017 to 2022Locations with 20+ staff
Physicians officesMost crowded 1,041 +1.4% 125
Law offices 653 -6.2% 43
Real estate agents and brokersQuickest growth 523 +13% 7
Insurance agencies and brokerages 723 -7.9% 35
Accounting and CPA firms 234 -1.3% 21
Dentists 492 -11.2% 24
Roofing contractors 86 +4.9% 6
Residential remodelers 381 +4.7% 11
Landscaping services 359 -4.8% 32
General automotive repair 266 -7.3% 6
Plumbing, heating and air-conditioning contractorsLargest operators 273 -8.4% 54
Electrical contractorsMost room 173 +7.5% 29
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). Figures are establishments from the Census County Business Patterns (2017, 2022), not a count of active advertisers. Method
The most crowded category in St. Louis County, MO is physicians offices: 1,041 locations, 2.6x what a typical county has per resident, and up 1.4% since 2017. Law offices (653 locations, 2.3x) and real estate agents and brokers (523 locations, 2.1x) also sit above a normal county. Electrical contractors is the least crowded category here at 0.8x typical (173 locations), so a campaign in that category is less likely to be drowned out.
Real estate agents and brokers grew fastest, up 13% since 2017 to 523 locations. Dentists went the other way, down 11.2% to 492 locations. The biggest operators sit in plumbing, heating and air-conditioning contractors: 54 of 273 locations have 20 or more employees.
This describes who you are up against, not what a click will cost. Click costs come from keywords, ad quality, landing pages and timing, so read a crowded category as a reason to plan well and a quiet one as an opening, not a price quote.
Similar markets
St. Louis County, MO Next to Its Closest Look-Alikes
We matched St. Louis County, MO to the six markets in our 400-market set that look most like it on population, income, growth, construction and how crowded local advertising is.
| Market | ACI | Residents | Population change since 2020 | Ad-business change since 2017 | Permits per 10k, 2025 |
|---|---|---|---|---|---|
| St. Louis County, MO (this page) | 72 | 987,059 | -1.7% | -2.4% | 8 |
| Baltimore County, MD | 71 | 844,703 | -1.2% | -3.7% | 18.1 |
| Providence County, RI | 67.7 | 660,615 | 0% | +6.7% | 13.2 |
| Essex County, MA | 67.8 | 810,089 | 0% | +6.3% | 12 |
| Oakland County, MI | 71.5 | 1,270,426 | -0.3% | -0.7% | 16.9 |
| Virginia Beach, VA | 69 | 453,649 | -1.3% | +5.4% | 9.6 |
| Passaic County, NJ | 66.2 | 513,395 | -2.2% | -4.7% | 12.3 |
Look-alikes are the six counties in our 400-market set closest to this one on size, income, growth, construction and ad-business density. Sources as above.
Baltimore County, MD is the closest match, scoring 71 against St. Louis County, MO's 72. Passaic County, NJ is the furthest from it, scoring 66.2. Providence County, RI's ad-heavy business base changed +6.7% over the period against −2.4% in St. Louis County, MO. Already advertising in one of these places? The comparison shows how similar the competition is; it does not predict your results.
Demand signal
New Homes in St. Louis County, MO: Below the 2022 Peak, Turning Up This Year
Housing units authorized by building permits. Source: U.S. Census Bureau Building Permits Survey (annual county files, with the year-to-date bars covering the same months in each year). Permits count homes approved to be built, not homes completed.
St. Louis County, MO authorized 1,777 housing units in 2022 and 787 in 2025, about 56% fewer; 2025 still works out to 8 units per 10,000 residents, less than in 86% of counties. Permits for January through August total 729, versus 554 in the same months last year (+31.6%).
In St. Louis County, MO, the construction-linked categories already busiest are real estate agents and brokers (2.1x typical) and insurance agencies and brokerages (2.0x typical). When new households are your market, treat permits as an early signal: when they turn, search demand usually follows, and your budget and ad schedule should too.
Population by place
The Largest Places in St. Louis County, MO
Population by place, from the Census Bureau's latest estimates. These are not service areas, but they show where the biggest groups of customers are.
| Place | People (2023 est.) | Share of county |
|---|---|---|
| Florissant | 51,128 | 5% |
| Chesterfield | 49,166 | 5% |
| Wildwood | 34,851 | 4% |
| University City | 34,096 | 3% |
| Ballwin | 30,410 | 3% |
| Kirkwood | 29,174 | 3% |
Source: the Census Bureau's Population Estimates. The list covers cities, towns and census-designated places; where a city crosses into a neighboring county, only the part inside St. Louis County is counted.
Check the math
Work Out What a Lead Can Cost Before You Spend a Dollar
Break-even is different for each business. Type in what a new customer is worth to you and how many leads become customers, and it will show the most you can pay per lead, how many customers cover your monthly cost, and how that compares with the cost per lead you expect.
The process
How Google Ads Management Works for St. Louis County Advertisers
Set up
We assemble your campaign the right way from day one: conversion-ready landing pages, keywords, ads, ad extensions and tracking for calls, forms and sales.
Go live and listen
After launch we keep tuning the account, blocking poor-fit searches with negative keywords, adjusting bids and raising lead quality.
Manage & scale
We lean into the ad groups that are working and try wider keywords to lift your call volume.
Never stop tuning
We keep refining the account and reduce your monthly management fee as your account grows, to increase your return.
Platforms we manage
Google, Facebook, Instagram and Bing Ads Under One Plan
Meta Ads: Facebook & Instagram
Campaigns on Facebook and Instagram, managed in Meta's ad platform, that reach St. Louis County residents before they start searching.
Bing Ads
Bing, Microsoft Edge and Microsoft's partner network give you a second search audience.
PPC, paid search, paid social
People say Google Ads, PPC, paid ads, Facebook ads or Instagram ads; all of them mean paying per click, and we manage that for St. Louis 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
Google Ads & Paid Ads Management Pricing
A single monthly management fee, with nothing to sign, based on how many platforms you want us to run. Your ad budget is separate and is paid directly to the platform. Over $10K a month in ad budget? Reach out.
Questions
St. Louis County, MO Google Ads Management: Your Questions Answered
What does it cost to have someone manage Google Ads for my St. Louis County, MO business?
We charge a flat monthly management fee based on how many platforms we run: $895 for one, $1,595 for two, $2,295 for three. No contract is involved, and you pay your ad budget directly to the platform.
How do I decide on an ad budget in St. Louis County, MO?
Start from your own economics rather than 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. Louis County, MO, physicians offices (2.6x) and law offices (2.3x) 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. Louis County, MO a competitive market for Google Ads?
More than most. St. Louis County, MO scores 72 on our Ad Competition Index, ranking 214th of 1,822 counties with 20,000+ residents and 82nd of the 400 markets we cover. Physicians offices is the densest category here, at 2.6 times the typical county. Crowding does not rule ads out; it makes targeting and landing pages matter more.
What kinds of local businesses advertise most in St. Louis County, MO?
Across the twelve ad-heavy categories we track, the largest by employer locations in St. Louis County, MO are physicians offices (1,041), insurance agencies and brokerages (723) and law offices (653). Measured against a typical county, the most crowded are physicians offices (2.6x) and law offices (2.3x). Size and crowding in a category do not decide whether ads work for you; it tells you how many other businesses may be bidding on the same searches.
How fast will Google Ads send leads to my St. Louis County, MO business?
Some campaigns produce calls the day they go live. Others need two to four weeks to settle, particularly in busy categories like physicians offices. In the first weeks we review search terms and add negative keywords so your budget lands on the right clicks.
Is St. Louis County, MO growing, and does that matter for Google Ads?
St. Louis County, MO has 987,059 residents, −1.7% since the 2020 Census, and 787 housing units were permitted in 2025 (8 per 10,000 residents). When the population is slipping, new customers mostly have to come from competitors. In both cases, ads reach whoever is searching right now, and that is why these trends inform the budgets we set.
Can you target only the parts of St. Louis County, MO I serve?
Yes. We can target by city (Florissant, Chesterfield, Wildwood, University City and others), by ZIP code or by a radius around your location. About 32% of residents live outside any incorporated place, and radius targeting is often how we reach them.
Do you manage Facebook and Instagram ads, or only Google?
We do. Our paid ads management covers Google Ads, Bing (Microsoft Advertising) and Meta, Facebook and Instagram's parent company. Many St. Louis County, MO businesses begin with Google, since people there are actively searching, and layer on Facebook and Instagram ads to reach people before they search. Pricing steps up by the number of platforms, not by the size of your ad budget.
Am I locked into a contract, and how do I see results?
There is no contract, it is month to month, and you can cancel anytime. Your account has one dedicated manager, and each month you get a report of the calls, form fills and sales your St. Louis County, MO campaign generated.
Around St. Louis County
Beyond St. Louis County: Nearby Counties
Do your customers live outside St. Louis County, MO? These counties are the closest, measured from center to center:
- St. Louis, MO: around 11 miles from here, 281,754 people, competition index 46.1
- St. Charles County, MO: about 16 miles away, 416,659 residents, index score 60.2
- Jefferson County, MO: around 27 miles away, 231,230 people, Ad Competition Index 52.6
- Monroe County, IL: around 29 miles from here, 34,957 residents, competition index 70.4
- St. Clair County, IL: about 30 miles out, 251,018 people, competition index 52.1
- Jersey County, IL: about 31 miles from here, 21,091 people, Ad Competition Index 49.4
Sources and method
How We Built This St. Louis County Page
The figures on this page are drawn from public U.S. Census Bureau data, worked out identically for every county, so St. Louis County can be compared with any other market. We do not use client account data or publish performance numbers for GetPhound campaigns, because results differ by business.
- Last updatedOctober 16, 2026
- SourcesCensus population estimates (2023), County Business Patterns (2017, 2022), income estimates from the Small Area Income and Poverty Estimates program (2023), the Building Permits Survey (2021 to 2026 year to date), Gazetteer files.
- MethodThe Ad Competition Index and the numbers derived from it are explained on the methodology page. Compare all markets in the index.
- Report a mistakeSpot an error? Email hello@getphound.com and we will check it against the Census source.
Start a Conversation
Ready to Grow Your St. Louis County, MO Business With Google Ads?
Tell us what you sell and which parts of St. Louis County, MO you serve. You will see what a Google Ads plan looks like at your budget. To book a strategy session with our CEO, call 610-825-4363 or email hello@getphound.com.