Home services · County · Maryland
HVAC and plumbing companies in Carroll County, MD
The HVAC and plumbing companies in Carroll County, MD, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 42 out of 100: Lower middle
Ranked #1,141 of 1,707 scored counties
#18 of 23 scored counties in Maryland
- Listings
- 65
- 2 chain locations (3%)
- Official establishments
- 113
- −0.9% since 2019
- Household spending a year
- $234.8M
- On home repairs, maintenance and insurance · $3,652 a household
- Spending per listing
- $3.6M
- 24% below the U.S.
- Listings per 10k households
- 10.1
- 60% above the U.S.
- Population, 2025
- 176,677
- +2.2% since 2020
See the HVAC and plumbing companies around any address in Carroll 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 Carroll 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
Households in Carroll County spend about $234.8M a year on home repairs, maintenance and insurance, or $3,652 per household, 21% above the U.S. average. That is about $3.6M of household spending for each company on map listings, 24% 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 65 HVAC and plumbing companies on map listings in Carroll County as of September 2026. Of those, 2 are chain locations, or 3%, against 4% across the U.S. That comes to 10.1 for every 10,000 households, 60% above the U.S. rate of 6.3.
The official count of businesses with payroll classed as plumbing, heating and air-conditioning contractors in Carroll County was 113 in 2023, down 0.9% from 2019. That is one for every 569 households, against one for every 1,162 across the U.S. Since fiscal 2022, 6 SBA-backed loans worth $6M have gone to businesses classed as plumbing, heating and air-conditioning contractors in Carroll County.
Population estimates show Carroll County grew 2.2% from 2020 to 2025, slower than the U.S. (+3.1%). For HVAC and plumbing companies, Carroll County has a Groundwork market score of 42 (lower middle): #1,141 of 1,707 scored counties and #18 of 23 scored counties in Maryland.
How Carroll County compares
The same measures for Maryland 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 | Carroll County | Maryland | U.S. |
|---|---|---|---|
| Listings per 10k households | 10.1 | 6.3 | 6.3 |
| Spending per listing | $3.6M | $5.5M | $4.8M |
| Households per official establishment | 569 | 1,190 | 1,162 |
| Official establishment growth, 2019–2023 | −0.9% | −4.8% | +7.6% |
| Population growth, 2020–2025 | +2.2% | +1.4% | +3.1% |
| Spending per household on home repairs, maintenance and insurance | $3,652 | $3,443 | $3,018 |
| Median household income | $118,211 | $103,678 | $80,734 |
| Groundwork market score | 42 | 65 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 114 → 113−0.9% over the period
- Employees, 2023
- 1,141
- Annual payroll, 2023
- $77.2M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 652 chain locations
- Listings at the U.S. rate for this spending
- 49The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 6
- Amount
- $6M
SBA-backed loans to businesses classed as plumbing, heating and air-conditioning contractors in Carroll 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 Carroll County
- Population, 2025 estimate
- 176,677+2.2% since 2020
- Households
- 64,285
- Median age
- 42.4
- Homes lived in by their owners
- 84%
- Vehicles per household
- 2.1
- Land area
- 448 sq. mi.
- People per square mile
- 392
- Median household income
- $118,211+22.2% vs. 2015–2019, before inflation
- Average household income
- $142,587
- Median home value
- $434,000
- Jobs located here
- 57,897
- Daytime population
- 147,678Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Carroll 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 Carroll 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 Maryland
Every Maryland market ranked →The highest-scoring counties in Maryland for HVAC and plumbing companies, numbered among those based in Maryland, with Carroll County marked.
Top counties in Maryland
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Montgomery County, MD | 81 | 208 | 5.3 | $7.4M | +1.3% | #51 of 1,707 |
| 2Prince George’s County, MD | 76 | 168 | 4.8 | $6.9M | +0.5% | #97 of 1,707 |
| 3Howard County, MD | 73 | 68 | 5.6 | $7.4M | +1.9% | #143 of 1,707 |
| 4Cecil County, MD | 72 | 23 | 5.7 | $5.5M | +3.2% | #170 of 1,707 |
| 5Baltimore city, MD | 70 | 80 | 3.1 | $8.6M | −2.3% | #199 of 1,707 |
| 6Charles County, MD | 66 | 44 | 7.2 | $5.1M | +5.9% | #307 of 1,707 |
| 7Baltimore County, MD | 63 | 199 | 6.0 | $5.4M | −0.7% | #393 of 1,707 |
| 8Frederick County, MD | 63 | 89 | 8.5 | $4.4M | +11.0% | #403 of 1,707 |
| 9Washington County, MD | 62 | 36 | 6.0 | $4.8M | +2.0% | #433 of 1,707 |
| 10Anne Arundel County, MD | 60 | 166 | 7.4 | $5.1M | +1.7% | #495 of 1,707 |
| 18Carroll County, MD | 42 | 65 | 10.1 | $3.6M | +2.2% | #1,141 of 1,707 |
Other business types in Carroll 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
- Home repair trades38
- HVAC and plumbing42
- Electricians39
- Roofing and gutters51
- Lawn, cleaning and pest control43
- Landscaping and lawn care40
- House cleaning72
- Pest control65
Real estate
Funeral services
Questions
How many HVAC and plumbing companies are in Carroll County, MD?
As of September 2026, map listings count 65 HVAC and plumbing companies in Carroll County. 2 of them (3%) are chain locations. The listings count heating and air-conditioning companies and plumbers. Official counts show 113 businesses with payroll classed as plumbing, heating and air-conditioning contractors in 2023, down 0.9% from 2019.
How much do households in Carroll County, MD spend on home repairs, maintenance and insurance?
About $234.8M a year, or $3,652 per household. That is 21% above the U.S. average (an index of 121, where 100 is the U.S. average). Spread across the 65 HVAC and plumbing companies on map listings, it comes to $3.6M 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 64,285 households in Carroll County and national spending patterns by income.
How does Carroll County, MD compare with the U.S. for HVAC and plumbing companies?
Carroll County has 10.1 HVAC and plumbing companies per 10,000 households, 60% above the U.S. rate of 6.3. Spending per company is $3.6M, 24% below the U.S. figure of $4.8M. At the U.S. ratio of HVAC and plumbing companies to household spending, Carroll County would have about 49, against 65 on map listings. There is one business with payroll in the industry for every 569 households, against one for every 1,162 across the U.S. The official count fell 0.9% from 2019 to 2023, against +7.6% for the U.S.
How fast is Carroll County, MD growing?
Population estimates put Carroll County at 176,677 people in 2025, up 2.2% since 2020, slower than the U.S. (+3.1%). It has 64,285 households. Median household income in Carroll County is $118,211, 46% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 22.2%, 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. Carroll County scores 42 for HVAC and plumbing companies (lower middle), #1,141 of 1,707 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Carroll 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 Carroll County
Screening a site or an acquisition in Carroll 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 Carroll 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.