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HVAC and plumbing companies in Miller County, MO

The HVAC and plumbing companies in Miller County, MO, the household spending behind them and how the market ranks against other counties.

Groundwork market score · out of 100

Score 17 out of 100: Low

Ranked #1,678 of 1,707 scored counties
#54 of 56 scored counties in Missouri

Listings
16
2 chain locations (13%)
Official establishments
16
Businesses with payroll, 2023
Household spending a year
$23.3M
On home repairs, maintenance and insurance · $2,366 a household
Spending per listing
$1.5M
69% below the U.S.
Listings per 10k households
16.2
2.6 times the U.S.
Population, 2025
25,817
+4.2% since 2020

See the HVAC and plumbing companies around any address in Miller County

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 Miller County. 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

Miller County scores 17 (low) on the Groundwork market score for HVAC and plumbing companies, ranking #1,678 of 1,707 scored counties and #54 of 56 scored counties in Missouri. That puts it in the bottom quarter of counties.

At $2,366 per household (22% below the U.S. average), households in Miller County spend about $23.3M a year on home repairs, maintenance and insurance. That works out to $1.5M per company, 69% below the U.S. figure of $4.8M. The spending figure covers all home repairs, maintenance and insurance, not only HVAC and plumbing companies.

Miller County has 16 HVAC and plumbing companies on map listings as of September 2026. Chain locations make up 13% of them, against 4% across the U.S. That comes to 16.2 for every 10,000 households, 2.6 times the U.S. rate of 6.3.

Official counts show 16 businesses with payroll classed as plumbing, heating and air-conditioning contractors in Miller County in 2023. That is one for every 616 households, against one for every 1,162 across the U.S. Population estimates put the population change in Miller County from 2020 to 2025 at +4.2%, faster than the U.S. (+3.1%).

How Miller County 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 Miller County, MO compared with Missouri and the U.S.
MeasureMiller CountyMissouriU.S.
Listings per 10k households16.26.56.3
Spending per listing$1.5M$4.1M$4.8M
Households per official establishment6161,3101,162
Official establishment growth, 2019–2023n/a+4.7%+7.6%
Population growth, 2020–2025+4.2%+1.9%+3.1%
Spending per household on home repairs, maintenance and insurance$2,366$2,667$3,018
Median household income$56,736$70,702$80,734
Groundwork market score1738

Official counts and lending

Businesses

Official establishments, 2019 to 2023
14 → 16
Employees, 2023
126
Annual payroll, 2023
$7M
One-person businesses, 2023
Not publishedNot published for this business type
Map listings, September 2026
162 chain locations
Listings at the U.S. rate for this spending
5The U.S. ratio of listings to household spending, applied here

SBA-backed loans since fiscal 2022

Loans
0
Amount
$0

SBA-backed loans to businesses classed as plumbing, heating and air-conditioning contractors in Miller County, 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 Miller County

Population, 2025 estimate
25,817+4.2% since 2020
Households
9,857
Median age
41.6
Homes lived in by their owners
74%
Vehicles per household
2.0
Land area
593 sq. mi.
People per square mile
43
Median household income
$56,736+20.3% vs. 2015–2019, before inflation
Average household income
$74,753
Median home value
$192,600
Jobs located here
7,939
Daytime population
22,607Residents who don’t work, plus everyone whose job is here

Looking at a specific site in Miller County?

These figures cover the whole county. 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 Miller County. 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 counties in Missouri for HVAC and plumbing companies, numbered among those based in Missouri, with Miller County marked.

Top counties in Missouri

Counties in Missouri ranked for HVAC and plumbing companies by Groundwork market score
MarketScoreListingsPer 10k householdsSpending per listingPopulation growthU.S. rank
1Platte County, MO84245.5$5.7M+6.7%#35 of 1,707
2St. Charles County, MO691247.7$4.2M+4.9%#244 of 1,707
3St. Louis County, MO642345.7$5.3M−1.2%#366 of 1,707
4Lincoln County, MO64125.3$5.3M+11.4%#367 of 1,707
5Callaway County, MO6395.5$4.8M+3.2%#399 of 1,707
6Clay County, MO61757.3$3.9M+4.3%#474 of 1,707
7St. Louis city, MO59503.5$7M−7.4%#514 of 1,707
8Newton County, MO59104.5$5.7M+6.1%#521 of 1,707
9Jackson County, MO581795.8$4.5M+2.1%#574 of 1,707
10Barry County, MO5664.5$5.5M+4.8%#629 of 1,707
54Miller County, MO171616.2$1.5M+4.2%#1,678 of 1,707

Other business types in Miller County

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

Questions

How many HVAC and plumbing companies are in Miller County, MO?

Map listings as of September 2026 show 16 HVAC and plumbing companies in Miller County. 2 of them (13%) are chain locations. The listings count heating and air-conditioning companies and plumbers. Official counts show 16 businesses with payroll classed as plumbing, heating and air-conditioning contractors in 2023.

How much do households in Miller County, MO spend on home repairs, maintenance and insurance?

About $23.3M a year, or $2,366 per household. That is 22% below the U.S. average (an index of 78, where 100 is the U.S. average). Spread across the 16 HVAC and plumbing companies on map listings, it comes to $1.5M per company. That spending covers all home repairs, maintenance and insurance, which HVAC and plumbing companies share with other businesses in the trade. It is estimated from the incomes of the 9,857 households in Miller County and national spending patterns by income.

How does Miller County, MO compare with the U.S. for HVAC and plumbing companies?

Miller County has 16.2 HVAC and plumbing companies per 10,000 households, 2.6 times the U.S. rate of 6.3. Spending per company is $1.5M, 69% below the U.S. figure of $4.8M. At the U.S. ratio of HVAC and plumbing companies to household spending, Miller County would have about 5, against 16 on map listings. There is one business with payroll in the industry for every 616 households, against one for every 1,162 across the U.S.

How fast is Miller County, MO growing?

Population estimates put Miller County at 25,817 people in 2025, up 4.2% since 2020, faster than the U.S. (+3.1%). It has 9,857 households. Median household income in Miller County is $56,736, 30% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 20.3%, 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. Miller County scores 17 for HVAC and plumbing companies (low), #1,678 of 1,707 scored counties.

How can I see the market around a specific site?

Run a Groundwork site report on an address in Miller County. 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 Miller County

Screening a site or an acquisition in Miller County?

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 Miller County. 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.