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HVAC and plumbing companies in the St. Louis, MO-IL metro area

How the St. Louis, MO-IL metro area compares with other metro areas and the U.S. for HVAC and plumbing companies: competitors, household spending, official counts and growth.

Groundwork market score · out of 100

Score 55 out of 100: Upper middle

Ranked #155 of 387 scored metro areas
#2 of 8 scored metro areas based in Missouri

Listings
715
37 chain locations (5%)
Official establishments
806
−3.2% since 2019
Household spending a year
$3.3B
On home repairs, maintenance and insurance · $2,859 a household
Spending per listing
$4.6M
2% below the U.S.
Listings per 10k households
6.2
2% below the U.S.
Population, 2025
2,814,421
−0.2% since 2020

See the HVAC and plumbing companies around any address in the St. Louis metro area

The site report maps the HVAC and plumbing companies on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of the St. Louis metro area. Signed out, you see a blurred preview; on an account, each report is one action.

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Survey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure

What this means

Map listings as of September 2026 show 715 HVAC and plumbing companies in the St. Louis metro area. Chain locations make up 5% of them, against 4% across the U.S. That is 6.2 per 10,000 households, 2% below the U.S. rate of 6.3.

Households in the St. Louis metro area spend about $3.3B a year on home repairs, maintenance and insurance, or $2,859 per household, 5% below the U.S. average. Spread across 715 HVAC and plumbing companies, that is $4.6M per company, 2% below the U.S. figure of $4.8M. That spending covers all home repairs, maintenance and insurance, which HVAC and plumbing companies share with other businesses in the trade.

The official count of businesses with payroll classed as plumbing, heating and air-conditioning contractors in the St. Louis metro area was 806 in 2023, down 3.2% from 2019. That is one for every 1,440 households, against one for every 1,162 across the U.S. Since fiscal 2022, 31 SBA-backed loans worth $10.3M have gone to businesses classed as plumbing, heating and air-conditioning contractors in the St. Louis metro area.

Between 2020 and 2025, the population of the St. Louis metro area declined 0.2%, against +3.1% for the U.S. For HVAC and plumbing companies, the St. Louis metro area has a Groundwork market score of 55 (upper middle): #155 of 387 scored metro areas and #2 of 8 scored metro areas based in Missouri.

How the St. Louis metro area compares

The same measures for Missouri and the whole U.S. Spending per listing divides a year of household spending on all home repairs, maintenance and insurance by the HVAC and plumbing companies counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.

HVAC and plumbing in St. Louis, MO-IL metro area compared with Missouri and the U.S.
MeasureSt. Louis metro areaMissouriU.S.
Listings per 10k households6.26.56.3
Spending per listing$4.6M$4.1M$4.8M
Households per official establishment1,4401,3101,162
Official establishment growth, 2019–2023−3.2%+4.7%+7.6%
Population growth, 2020–2025−0.2%+1.9%+3.1%
Spending per household on home repairs, maintenance and insurance$2,859$2,667$3,018
Median household income$80,196$70,702$80,734
Groundwork market score5538

Official counts and lending

Businesses

Official establishments, 2019 to 2023
806−3.2% over the period
Employees, 2023
11,672
Annual payroll, 2023
$980.8M
One-person businesses, 2023
Not publishedNot published for this business type
Map listings, September 2026
71537 chain locations
Listings at the U.S. rate for this spending
697The U.S. ratio of listings to household spending, applied here

SBA-backed loans since fiscal 2022

Loans
31
Amount
$10.3M

SBA-backed loans to businesses classed as plumbing, heating and air-conditioning contractors in the St. Louis metro area, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.

Population and households in the St. Louis metro area

Population, 2025 estimate
2,814,421−0.2% since 2020
Households
1,160,386
Median age
40.8
Homes lived in by their owners
70%
Vehicles per household
1.8
Land area
7,864 sq. mi.
People per square mile
357
Median household income
$80,196+25.9% vs. 2015–2019, before inflation
Average household income
$109,353
Median home value
$244,800
Jobs located here
1,400,208
Daytime population
2,847,124Residents who don’t work, plus everyone whose job is here

Looking at a specific site in the St. Louis metro area?

These figures cover the whole metro area. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the HVAC and plumbing companies on map listings by name and distance.

Or open the report at the center of the St. Louis metro area. Signed out, you see a blurred preview; on an account, each report is one action.

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HVAC and plumbing across Missouri

Every Missouri market ranked →

The highest-scoring metro areas in Missouri for HVAC and plumbing companies, numbered among those based in Missouri, with the St. Louis metro area marked.

Top metro areas in Missouri

Metro areas in Missouri ranked for HVAC and plumbing companies by Groundwork market score
MarketScoreListingsPer 10k householdsSpending per listingPopulation growthU.S. rank
1Kansas City, MO-KS595956.6$4.4M+3.4%#124 of 387
2St. Louis, MO-IL557156.2$4.6M−0.2%#155 of 387
3Cape Girardeau, MO-IL40236.0$4.2M+1.7%#271 of 387
4Columbia, MO39647.4$3.6M+3.9%#281 of 387
5Joplin, MO-KS39546.8$3.6M+3.9%#282 of 387
6Springfield, MO301668.3$3M+5.1%#348 of 387
7St. Joseph, MO-KS26306.4$3.9M−2.0%#362 of 387
8Jefferson City, MO22457.7$3.4M+2.2%#375 of 387

Other business types in the St. Louis metro area

Each with its Groundwork market score here, out of 100, where it has one.

Questions

How many HVAC and plumbing companies are in the St. Louis, MO-IL metro area?

There are 715 HVAC and plumbing companies on map listings in the St. Louis metro area as of September 2026. 37 of them (5%) are chain locations. The listings count heating and air-conditioning companies and plumbers. Official counts show 806 businesses with payroll classed as plumbing, heating and air-conditioning contractors in 2023, down 3.2% from 2019.

How much do households in the St. Louis, MO-IL metro area spend on home repairs, maintenance and insurance?

About $3.3B a year, or $2,859 per household. That is 5% below the U.S. average (an index of 95, where 100 is the U.S. average). Spread across the 715 HVAC and plumbing companies on map listings, it comes to $4.6M per company. The spending figure covers all home repairs, maintenance and insurance, not only HVAC and plumbing companies. It is estimated from the incomes of the 1,160,386 households in the St. Louis metro area and national spending patterns by income.

How does the St. Louis, MO-IL metro area compare with the U.S. for HVAC and plumbing companies?

The St. Louis metro area has 6.2 HVAC and plumbing companies per 10,000 households, 2% below the U.S. rate of 6.3. Spending per company is $4.6M, 2% below the U.S. figure of $4.8M. At the national ratio of HVAC and plumbing companies to household spending, the St. Louis metro area would have about 697, against 715 on map listings. There is one business with payroll in the industry for every 1,440 households, against one for every 1,162 across the U.S. The official count fell 3.2% from 2019 to 2023, against +7.6% for the U.S.

How fast is the St. Louis, MO-IL metro area growing?

Population estimates put the St. Louis metro area at 2,814,421 people in 2025, down 0.2% since 2020, against +3.1% for the U.S. It has 1,160,386 households. The median household income in the St. Louis metro area is $80,196 a year, in line with the U.S. median of $80,734. That rose 25.9% from the 2015–2019 survey, before inflation.

What is the Groundwork market score?

The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. The St. Louis metro area scores 55 for HVAC and plumbing companies (upper middle), #155 of 387 scored metro areas.

How can I see the market around a specific site?

Run a Groundwork site report on an address in the St. Louis metro area. It maps the HVAC and plumbing companies on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.

How the score works · Top markets for HVAC and plumbing companies · All 56 business types in the St. Louis metro area

Screening a site or an acquisition in the St. Louis metro area?

A site report maps the competitors on map listings near an address and sizes the households and spending around it.

The button opens the report at the center of the St. Louis metro area. Signed out, you see a blurred preview; on an account, each report is one action.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are estimates for research only. Not investment or real estate advice.