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HVAC and plumbing companies in Knox County, MO
How Knox County, MO compares with other counties and the U.S. for HVAC and plumbing companies: competitors, household spending, official counts and growth.
Groundwork market score
Not scored
Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.
- Listings
- 0
- None on the map
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $3.1M
- On home repairs, maintenance and insurance · $2,397 a household
- Spending per listing
- n/a
- Listings per 10k households
- 0.0
- Population, 2025
- 3,728
- −0.1% since 2020
See the HVAC and plumbing companies around any address in Knox 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 Knox County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
There are no HVAC and plumbing companies on map listings in Knox County as of September 2026. At the U.S. ratio of HVAC and plumbing companies to household spending, Knox County would have about 1, against none on map listings.
Household spending on home repairs, maintenance and insurance in Knox County comes to about $3.1M a year: $2,397 per household, 21% below the U.S. average. That spending covers all home repairs, maintenance and insurance, which HVAC and plumbing companies share with other businesses in the trade.
There is no official count of businesses with payroll classed as plumbing, heating and air-conditioning contractors in Knox County: counts under 3 aren’t published.
Population estimates put the population change in Knox County from 2020 to 2025 at −0.1%, against +3.1% for the U.S. Counties under 10,000 people aren’t given a market score, since a few businesses can swing their figures.
How Knox 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.
| Measure | Knox County | Missouri | U.S. |
|---|---|---|---|
| Listings per 10k households | 0.0 | 6.5 | 6.3 |
| Spending per listing | n/a | $4.1M | $4.8M |
| Households per official establishment | n/a | 1,310 | 1,162 |
| Official establishment growth, 2019–2023 | n/a | +4.7% | +7.6% |
| Population growth, 2020–2025 | −0.1% | +1.9% | +3.1% |
| Spending per household on home repairs, maintenance and insurance | $2,397 | $2,667 | $3,018 |
| Median household income | $57,788 | $70,702 | $80,734 |
| Groundwork market score | Not scored | 38 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- n/a
- Employees, 2023
- n/a
- Annual payroll, 2023
- n/a
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 0
- Listings at the U.S. rate for this spending
- 1The 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 Knox 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 Knox County
- Population, 2025 estimate
- 3,728−0.1% since 2020
- Households
- 1,288
- Median age
- 40.2
- Homes lived in by their owners
- 85%
- Vehicles per household
- 2.2
- Land area
- 504 sq. mi.
- People per square mile
- 7
- Median household income
- $57,788
- Average household income
- $76,853
- Median home value
- $101,400
- Jobs located here
- 853
- Daytime population
- 3,277Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Knox 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 Knox County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardHVAC 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 Knox County marked.
Top counties in Missouri
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Platte County, MO | 84 | 24 | 5.5 | $5.7M | +6.7% | #35 of 1,707 |
| 2St. Charles County, MO | 69 | 124 | 7.7 | $4.2M | +4.9% | #244 of 1,707 |
| 3St. Louis County, MO | 64 | 234 | 5.7 | $5.3M | −1.2% | #366 of 1,707 |
| 4Lincoln County, MO | 64 | 12 | 5.3 | $5.3M | +11.4% | #367 of 1,707 |
| 5Callaway County, MO | 63 | 9 | 5.5 | $4.8M | +3.2% | #399 of 1,707 |
| 6Clay County, MO | 61 | 75 | 7.3 | $3.9M | +4.3% | #474 of 1,707 |
| 7St. Louis city, MO | 59 | 50 | 3.5 | $7M | −7.4% | #514 of 1,707 |
| 8Newton County, MO | 59 | 10 | 4.5 | $5.7M | +6.1% | #521 of 1,707 |
| 9Jackson County, MO | 58 | 179 | 5.8 | $4.5M | +2.1% | #574 of 1,707 |
| 10Barry County, MO | 56 | 6 | 4.5 | $5.5M | +4.8% | #629 of 1,707 |
| Knox County, MO | Not scored | 0 | 0.0 | n/a | −0.1% |
Other business types in Knox County
None has a Groundwork market score here. Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many HVAC and plumbing companies are in Knox County, MO?
Map listings as of September 2026 show no HVAC and plumbing companies in Knox County. The listings count heating and air-conditioning companies and plumbers. No official count is published for plumbing, heating and air-conditioning contractors in Knox County: counts under 3 are left out.
How much do households in Knox County, MO spend on home repairs, maintenance and insurance?
About $3.1M a year, or $2,397 per household. That is 21% below the U.S. average (an index of 79, where 100 is the U.S. average). The spending figure covers all home repairs, maintenance and insurance, not only HVAC and plumbing companies. It is estimated from the incomes of the 1,288 households in Knox County and national spending patterns by income.
How does Knox County, MO compare with the U.S. for HVAC and plumbing companies?
Knox County has no HVAC and plumbing companies on map listings. At the national ratio of HVAC and plumbing companies to household spending, Knox County would have about 1, against none on map listings.
How fast is Knox County, MO growing?
Population estimates put Knox County at 3,728 people in 2025, down 0.1% since 2020, against +3.1% for the U.S. It has 1,288 households. The median household income in Knox County is $57,788 a year, 28% below the U.S. median of $80,734.
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 score leaves out counties under 10,000 people, where a handful of businesses would swing it.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Knox 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 Knox County
Screening a site or an acquisition in Knox 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 Knox 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.