Spray Foam Genius Marketing helps spray foam and insulation contractors in St Louis, Missouri win more jobs from homeowners and builders searching in that market. What follows is a local reading of the same Census, climate, and housing lines printed in the cards. The climate zone on this page is 4A. The population line reads 278,144. If a line is missing, this section does not fill it in.
Owner-occupied homes in St Louis are 46%. That is lower than the national figure of 65% in the same note. The city figure is under half, so renters are a large part of occupied homes. Renters are less often the person who hires insulation, which makes owners and landlords the tighter audience. The note on that line says: National: 65% (survey estimate). Aim the website and the map listing at people who can approve the work.
St Louis lists utility gas (66%) as the main heating fuel on this page. Source on this page: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25040, as of 2024. Mention the fuel homeowners already use when you explain why insulation shows up on a monthly bill. Do not invent a percentage of bills that insulation will cut.
Degree days on this page: 4,547 heating and 1,476 cooling. Both figures use base 65 F. The heating note says the reading was measured at CAHOKIA ST LOUIS AP. Heating (4,547) is larger than cooling (1,476). Pages and ads can lead with cold rooms, drafts, and heating bills. Those are the published normals, not a forecast for a given year.
Contractors sizing up St Louis can start from 278,144 residents. The note on that line says: Estimate for July 1, 2025. Source on this page: U.S. Census Bureau, Vintage 2025 population estimates for cities and towns, as of July 1, 2025. The county line reads St. Louis city. The marketing question is which part of that population can hire the work, and the housing lines further down are the closer read when they are present.
The median year homes were built in St Louis is 1938. That year is earlier than the national median of 1981 printed in the same note. The note on that line says: National median: 1981 (survey estimate, with a margin of error). A later median points toward more new construction in the mix. An earlier median points toward more retrofit work. The page does not split that into job counts.
Zone 4A is the climate designation published for St Louis. The moisture letter on this zone is humid (4A). The accompanying note is "humid climate, zone 4 of 8". Source on this page: U.S. DOE and PNNL, Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270), as of October 21, 2022. Homeowners do not search for a zone number. They search for the comfort problem that zone tends to produce, which is why the degree-day lines matter when this page has them.
St Louis's median home value on this page is $214,500. That is lower than the national figure of $360,600 in the same note. Source on this page: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25077, as of 2024. Do not invent a typical job size from this number. Job price depends on the scope the contractor actually sells.
Homes built before 1980 account for 87% of the housing stock in St Louis. That share is higher than the national figure of 48% in the same note. The note on that line says: National: 48% (survey estimate). Older homes are the usual audience for retrofit insulation. The percentage is not a count of leads.
Read as a set, the sourced lines suggest what a St Louis contractor should say first. Heating is the larger degree-day number, so cold-weather comfort is the first story for St Louis. With owner-occupancy at 46%, a St Louis campaign that speaks only to resident homeowners is aimed at the smaller tenure group. Check it against the grid. A message can be right for the climate and still be invisible three miles from the shop.
Two next steps sit on this page: the free audit for a St Louis grid, and a strategy call if you want to discuss the market. Results from other cities, shown further down, are those markets only. They are not a promise for St Louis.
Local area
What Census files list for St Louis. If a line is missing, that file had nothing that met the overlap rule. Nothing here is estimated.
ZIP codes. 63110, 63147, 63116, 63115, 63139, 63109, 63118, 63104, 63111, 63112, 63113, 63107, 63108, 63120, 63106, 63103, 63102, 63143, 63101, 63155.
These are 2020 Census ZIP Code Tabulation Areas that overlap St Louis. A ZCTA is the Census stand-in for a ZIP code. It is not a USPS delivery list. Source: U.S. Census Bureau, 2020 ZCTA to Place Relationship File. Retrieved 2026-10-31.
Primary roads. I-70, I-44, I-55, I-64, US Highway 40, Mark Twain Expressway, I-270, Stan Musial Veterans Memorial Bridge.
Limited-access highways from the 2020 Census TIGER primary roads file that cross the city boundary. Interstate labels drop the space Census stores after the hyphen. Short Census forms in the road names are written as full words. Interstate, US, state, and Puerto Rico route numbers stay as route designators. A road stored with both & and and is listed once. Source: U.S. Census Bureau, TIGER/Line 2020 Primary Roads (MTFCC S1100). Retrieved 2026-10-31.
Landmarks. Jefferson National Expansion Memorial.
Named Census area landmarks that overlap St Louis: airports, national park land, national forest or other federal land, state parks, and larger parks. Largest overlap first, up to five. Abbreviations in those names are written out, and a Park- prefix is shown as the place name followed by Park. Source: U.S. Census Bureau, TIGER/Line 2020 Area Landmarks. Retrieved 2026-10-31.
Market facts for spray foam contractors in St Louis
Population
278,144
Estimate for July 1, 2025
Source: U.S. Census Bureau, Vintage 2025 population estimates for cities and towns. As of July 1, 2025.
County
St. Louis city
County that contains the city's central point
Source: U.S. Census Bureau Geocoder (2020 county boundaries). As of 2020.
IECC climate zone
4A
humid climate, zone 4 of 8
Source: U.S. DOE and PNNL, Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270). As of October 21, 2022.
Heating degree days per year
4,547
Normal, base 65 F, measured at CAHOKIA ST LOUIS AP
Source: NOAA NCEI 1991-2020 U.S. Climate Normals. As of 1991-2020.
Cooling degree days per year
1,476
Normal, base 65 F, measured at CAHOKIA ST LOUIS AP
Source: NOAA NCEI 1991-2020 U.S. Climate Normals. As of 1991-2020.
Median year homes were built
1938
National median: 1981 (survey estimate, with a margin of error)
Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25035. As of 2024.
Homes built before 1980
87%
National: 48% (survey estimate)
Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25034. As of 2024.
Owner-occupied homes
46%
National: 65% (survey estimate)
Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25003. As of 2024.
Median home value
$214,500
Owner-occupied homes. National: $360,600 (survey estimate)
Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25077. As of 2024.
Main heating fuel
utility gas (66%)
Share of occupied homes (survey estimate)
Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates, table B25040. As of 2024.
Each figure links to its public source and shows the date it applies to.
Drawn from the sourced figures above. No new numbers.
Homes built before 1980
Owner-occupied homes
Median home value
Heating and cooling load in a typical year
Degree days per year, a standard measure of how much heating or cooling a climate needs.
What this means for your marketing in St Louis
The Census Bureau's 2024 American Community Survey puts the median home in St Louis at a build year of 1938 (nationally: 1981), and 87% of its homes were built before 1980 (nationally: 48%). That is an older housing stock. Older homes are where attic insulation, air sealing and rim joist work tend to pay off for the owner, so retrofit and energy-bill messaging usually fits better here than a new-construction pitch.
St Louis is in St. Louis city, which falls in IECC climate zone 4A. NOAA's 1991-2020 normals for CAHOKIA ST LOUIS AP (about 6 miles away) show 4,547 heating degree days and 1,476 cooling degree days in a typical year, so heating is the larger load. For a spray foam or insulation contractor, that tends to move what homeowners search for toward cold rooms, drafts, high heating bills and ice dams. The "A" in 4A marks a humid climate, so moisture control and air sealing deserve space in your content.
46% of occupied homes in St Louis are owner-occupied (nationally: 65%), and the median home value is $214,500 (nationally: $360,600). Renters make up a large part of the city, and renters are less often the ones who commission insulation work, so the buyers you want are a smaller group of owners and landlords. It is worth checking in your Google Maps grid whether the strongest demand sits in the suburbs and towns around the city. Lower home values tend to go with more price-aware buyers, so clear pricing, financing options and any rebates you can verify help.
Of occupied homes in St Louis, 66% heat mainly with utility gas and 31% with electricity (ACS 2024). With utility gas heating most homes, owners compare their winter gas bills, so comfort and heating-bill savings are the familiar angle.
St Louis had an estimated 278,144 residents on July 1, 2025 (U.S. Census Bureau). Google Maps rankings change from one part of a market to the next, so being visible near your shop does not mean being visible across the whole service area. The free Market Visibility Audit shows your ranking at a grid of points around your business.
How the Google Maps grid works in a market like St Louis
Google Maps does not show one ranking for a whole city. The result changes block by block, depending on where the searcher is standing. Our audit searches from a grid of points around your business and records where you appear at each one. Green means you are in the top 3 at that spot. Red means customers there are not finding you. In St Louis, that grid is the check on whether you show up across the area you claim, not only beside the shop.
Example from a client in Baton Rouge, Louisiana, not St Louis
How working with us goes
Spray Foam Genius Marketing works with spray foam and insulation contractors. The steps are the same in St Louis as everywhere else. Plans are month to month, and you can end service with 30 days notice.
1. Audit
We look at where your company shows up on Google Maps in the cities you serve. The Market Visibility Audit is free. It shows the current grid. It is not a forecast, and it does not promise a ranking.
2. Plan
If the work is a fit, we write a plan for the website, the Google Business Profile, and the ads for the jobs you take. We do not sell shared leads. We do not promise that only one contractor in St Louis can hire us.
3. Launch
We set up the work in the plan. You buy and own the domain at a registrar you choose, such as Namecheap or GoDaddy. We do not hold the domain, and we do not transfer it. If we build a website, we can move that website to a host you choose after you have been with us at least 90 days and you end service with 30 days notice. Before 90 days the website stays with us.
4. Monthly review
Each month we review what is live: the map listing, the pages, and the ads. We do not bill per lead or per estimate.
Services for St Louis contractors
SEO Services for Insulation Companies
A St Louis SEO plan can split retrofit and new-construction pages using the median build year of 1938 published here.
Google Business Profile Optimization
Categories and services on the St Louis profile need to match zone 4A, not a template written for a different climate.
Google Ads Management
In St Louis, owner-occupied homes are 46%. Ads still have to be aimed at people who can hire the work, inside the geography you serve.
Facebook & Instagram Ads
Creative for St Louis should show the season people feel: cold rooms and drafts.
Website Development
The St Louis site should read like zone 4A, with proof and a clear next step, on a phone.
Reputation Management
Reviews for a St Louis contractor are part of the map result. Ask after finished jobs, and answer what comes in. We do not invent review counts.
Results from other markets
These are real client results from the markets named. Client companies are not identified, and results vary by market.
Spray foam marketing in St Louis: FAQ
What climate zone is St Louis in, and why does it matter for my marketing?+
St. Louis city is in IECC climate zone 4A (U.S. Department of Energy and PNNL, 2022). Climate zone drives what insulation work homeowners ask about, so it shapes which services and keywords to put first on your website and in your ads.
Is heating or cooling the bigger driver in St Louis?+
NOAA's 1991-2020 normals for the nearest weather station show 4,547 annual heating degree days and 1,476 annual cooling degree days. Heating is the larger number, which is a useful starting point for choosing what to promote.
How old are the homes in St Louis, and does it change what I should sell?+
The Census Bureau's 2024 American Community Survey estimates a median build year of 1938 and 87% of homes built before 1980 in St Louis. Older homes tend to need retrofit work such as attic and air sealing, so lead with that.
Do most people in St Louis own their homes?+
The 2024 American Community Survey estimates that 46% of occupied homes in St Louis are owner-occupied, compared with 65% nationally. Owners are usually the ones who buy insulation work, so this is the size of the group your marketing is aimed at.
How big is the St Louis market?+
The U.S. Census Bureau estimated 278,144 residents in St Louis on July 1, 2025. Population is only one input. The audit shows how many positions you actually hold on Google Maps across the area.
Do you have an office in St Louis?+
No. Our office is in Vancouver, Washington. We work with spray foam and insulation contractors across the United States and Canada.
How do I see where my company ranks in St Louis?+
Run the free Market Visibility Audit. It checks your Google Maps ranking at a grid of points around your business and shows the map in a few minutes.
Other areas in Missouri
See where your company ranks in St Louis.
Get a free market visibility audit and see where you show up, and where you do not, across your service area.
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