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HVAC and plumbing companies in Marshall County, IA
How Marshall County, IA compares with other counties and the U.S. for HVAC and plumbing companies: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 34 out of 100: Lower middle
Ranked #1,413 of 1,707 scored counties
#22 of 42 scored counties in Iowa
- Listings
- 17
- 1 chain location (6%)
- Official establishments
- 9
- Businesses with payroll, 2023
- Household spending a year
- $39.7M
- On home repairs, maintenance and insurance · $2,565 a household
- Spending per listing
- $2.3M
- 51% below the U.S.
- Listings per 10k households
- 11.0
- 75% above the U.S.
- Population, 2025
- 39,890
- −0.5% since 2020
See the HVAC and plumbing companies around any address in Marshall 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 Marshall 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
For HVAC and plumbing companies, Marshall County has a Groundwork market score of 34 (lower middle): #1,413 of 1,707 scored counties and #22 of 42 scored counties in Iowa. That puts it in the bottom quarter of counties.
Household spending on home repairs, maintenance and insurance in Marshall County comes to about $39.7M a year: $2,565 per household, 15% below the U.S. average. That works out to $2.3M per company, 51% below the U.S. figure of $4.8M. The spending figure covers all home repairs, maintenance and insurance, not only HVAC and plumbing companies.
There are 17 HVAC and plumbing companies on map listings in Marshall County as of September 2026. One of them (6%) is a chain location, against 4% across the U.S. That comes to 11.0 for every 10,000 households, 75% above the U.S. rate of 6.3.
In 2023, official counts showed 9 businesses with payroll in Marshall County classed as plumbing, heating and air-conditioning contractors. That is one for every 1,722 households, against one for every 1,162 across the U.S. Population estimates put the population change in Marshall County from 2020 to 2025 at −0.5%, against +3.1% for the U.S.
How Marshall County compares
The same measures for Iowa 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 | Marshall County | Iowa | U.S. |
|---|---|---|---|
| Listings per 10k households | 11.0 | 6.1 | 6.3 |
| Spending per listing | $2.3M | $4.5M | $4.8M |
| Households per official establishment | 1,722 | 1,187 | 1,162 |
| Official establishment growth, 2019–2023 | n/a | +3.6% | +7.6% |
| Population growth, 2020–2025 | −0.5% | +1.5% | +3.1% |
| Spending per household on home repairs, maintenance and insurance | $2,565 | $2,714 | $3,018 |
| Median household income | $73,315 | $75,059 | $80,734 |
| Groundwork market score | 34 | 38 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 11 → 9
- Employees, 2023
- 105
- Annual payroll, 2023
- $6.1M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 171 chain location
- Listings at the U.S. rate for this spending
- 8The 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 Marshall 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 Marshall County
- Population, 2025 estimate
- 39,890−0.5% since 2020
- Households
- 15,496
- Median age
- 39.9
- Homes lived in by their owners
- 75%
- Vehicles per household
- 2.1
- Land area
- 573 sq. mi.
- People per square mile
- 70
- Median household income
- $73,315+29.9% vs. 2015–2019, before inflation
- Average household income
- $85,510
- Median home value
- $145,500
- Jobs located here
- 15,779
- Daytime population
- 36,753Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Marshall 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 Marshall 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 Iowa
Every Iowa market ranked →The highest-scoring counties in Iowa for HVAC and plumbing companies, numbered among those based in Iowa, with Marshall County marked.
Top counties in Iowa
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Dallas County, IA | 91 | 17 | 4.0 | $8.2M | +17.8% | #5 of 1,707 |
| 2Polk County, IA | 73 | 115 | 5.6 | $5.2M | +4.8% | #158 of 1,707 |
| 3Johnson County, IA | 69 | 36 | 5.7 | $4.9M | +4.6% | #241 of 1,707 |
| 4Black Hawk County, IA | 66 | 21 | 3.8 | $6.7M | +0.4% | #287 of 1,707 |
| 5Linn County, IA | 61 | 54 | 5.6 | $5M | +0.7% | #463 of 1,707 |
| 6Bremer County, IA | 58 | 6 | 6.2 | $4.5M | +1.1% | #573 of 1,707 |
| 7Scott County, IA | 58 | 46 | 6.3 | $4.4M | +0.4% | #578 of 1,707 |
| 8Warren County, IA | 58 | 15 | 7.3 | $4.1M | +9.0% | #587 of 1,707 |
| 9Story County, IA | 54 | 21 | 5.4 | $5M | +2.7% | #701 of 1,707 |
| 10Dickinson County, IA | 53 | 5 | 5.7 | $5M | +1.7% | #737 of 1,707 |
| 22Marshall County, IA | 34 | 17 | 11.0 | $2.3M | −0.5% | #1,413 of 1,707 |
Other business types in Marshall County
Each with its Groundwork market score here, out of 100, where it has one.
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 Marshall County, IA?
As of September 2026, map listings count 17 HVAC and plumbing companies in Marshall County. One of them (6%) is a chain location. The listings count heating and air-conditioning companies and plumbers. Official counts show 9 businesses with payroll classed as plumbing, heating and air-conditioning contractors in 2023.
How much do households in Marshall County, IA spend on home repairs, maintenance and insurance?
About $39.7M a year, or $2,565 per household. That is 15% below the U.S. average (an index of 85, where 100 is the U.S. average). Spread across the 17 HVAC and plumbing companies on map listings, it comes to $2.3M 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 15,496 households in Marshall County and national spending patterns by income.
How does Marshall County, IA compare with the U.S. for HVAC and plumbing companies?
Marshall County has 11.0 HVAC and plumbing companies per 10,000 households, 75% above the U.S. rate of 6.3. Spending per company is $2.3M, 51% below the U.S. figure of $4.8M. At the U.S. ratio of HVAC and plumbing companies to household spending, Marshall County would have about 8, against 17 on map listings. There is one business with payroll in the industry for every 1,722 households, against one for every 1,162 across the U.S.
How fast is Marshall County, IA growing?
Population estimates put Marshall County at 39,890 people in 2025, down 0.5% since 2020, against +3.1% for the U.S. It has 15,496 households. Median household income in Marshall County is $73,315, 9% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 29.9%, 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. Marshall County scores 34 for HVAC and plumbing companies (lower middle), #1,413 of 1,707 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Marshall 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 Marshall County
Screening a site or an acquisition in Marshall 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 Marshall 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.