Home services · County · North Dakota
HVAC and plumbing companies in Williams County, ND
How Williams County, ND 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 73 out of 100: Upper middle
Ranked #139 of 1,707 scored counties
#1 of 8 scored counties in North Dakota
- Listings
- 5
- 0 chain locations (0%)
- Official establishments
- 12
- Businesses with payroll, 2023
- Household spending a year
- $45.2M
- On home repairs, maintenance and insurance · $2,983 a household
- Spending per listing
- $9M
- 90% above the U.S.
- Listings per 10k households
- 3.3
- 48% below the U.S.
- Population, 2025
- 41,767
- +1.4% since 2020
See the HVAC and plumbing companies around any address in Williams 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 Williams 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, Williams County has a Groundwork market score of 73 (upper middle): #139 of 1,707 scored counties and #1 of 8 scored counties in North Dakota. That puts it in the top 10% of counties for HVAC and plumbing companies.
Map listings as of September 2026 show 5 HVAC and plumbing companies in Williams County. None of them are chain locations, against 4% across the U.S. That comes to 3.3 for every 10,000 households, 48% below the U.S. rate of 6.3.
Households in Williams County spend about $45.2M a year on home repairs, maintenance and insurance, or $2,983 per household, in line with the U.S. average. That is about $9M of household spending for each company on map listings, 90% above 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.
In 2023, official counts showed 12 businesses with payroll in Williams County classed as plumbing, heating and air-conditioning contractors. That is one for every 1,263 households, against one for every 1,162 across the U.S. Since fiscal 2022, 3 SBA-backed loans worth $58K have gone to businesses classed as plumbing, heating and air-conditioning contractors in Williams County. Population estimates put the population change in Williams County from 2020 to 2025 at +1.4%, slower than the U.S. (+3.1%).
How Williams County compares
The same measures for North Dakota 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 | Williams County | North Dakota | U.S. |
|---|---|---|---|
| Listings per 10k households | 3.3 | 6.0 | 6.3 |
| Spending per listing | $9M | $4.6M | $4.8M |
| Households per official establishment | 1,263 | 985 | 1,162 |
| Official establishment growth, 2019–2023 | n/a | +1.2% | +7.6% |
| Population growth, 2020–2025 | +1.4% | +2.5% | +3.1% |
| Spending per household on home repairs, maintenance and insurance | $2,983 | $2,751 | $3,018 |
| Median household income | $85,595 | $76,657 | $80,734 |
| Groundwork market score | 73 | 40 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 11 → 12
- Employees, 2023
- 84
- Annual payroll, 2023
- $5.2M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 50 chain locations
- Listings at the U.S. rate for this spending
- 10The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 3
- Amount
- $58K
SBA-backed loans to businesses classed as plumbing, heating and air-conditioning contractors in Williams 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 Williams County
- Population, 2025 estimate
- 41,767+1.4% since 2020
- Households
- 15,154
- Median age
- 33.3
- Homes lived in by their owners
- 53%
- Vehicles per household
- 2.0
- Land area
- 2,078 sq. mi.
- People per square mile
- 19
- Median household income
- $85,595−1.8% vs. 2015–2019, before inflation
- Average household income
- $117,741
- Median home value
- $284,800
- Jobs located here
- 25,521
- Daytime population
- 44,045Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Williams 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 Williams 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 North Dakota
Every North Dakota market ranked →The highest-scoring counties in North Dakota for HVAC and plumbing companies, numbered among those based in North Dakota, with Williams County marked.
Top counties in North Dakota
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Williams County, ND | 73 | 5 | 3.3 | $9M | +1.4% | #139 of 1,707 |
| 2Burleigh County, ND | 58 | 28 | 6.8 | $4.3M | +4.7% | #583 of 1,707 |
| 3Cass County, ND | 51 | 61 | 7.3 | $3.8M | +9.1% | #832 of 1,707 |
| 4Ward County, ND | 46 | 17 | 6.0 | $4.7M | −2.4% | #983 of 1,707 |
| 5Grand Forks County, ND | 43 | 21 | 6.7 | $3.9M | +1.9% | #1,101 of 1,707 |
| 6Morton County, ND | 37 | 12 | 8.6 | $3.2M | +3.8% | #1,309 of 1,707 |
| 7Stark County, ND | 28 | 12 | 8.9 | $3M | +0.5% | #1,524 of 1,707 |
| 8Richland County, ND | 23 | 8 | 11.7 | $2.4M | +1.2% | #1,618 of 1,707 |
Other business types in Williams 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 Williams County, ND?
There are 5 HVAC and plumbing companies on map listings in Williams County as of September 2026. None of them are chain locations. The listings count heating and air-conditioning companies and plumbers. Official counts show 12 businesses with payroll classed as plumbing, heating and air-conditioning contractors in 2023.
How much do households in Williams County, ND spend on home repairs, maintenance and insurance?
About $45.2M a year, or $2,983 per household. That is in line with the U.S. average (an index of 99, where 100 is the U.S. average). Spread across the 5 HVAC and plumbing companies on map listings, it comes to $9M 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 15,154 households in Williams County and national spending patterns by income.
How does Williams County, ND compare with the U.S. for HVAC and plumbing companies?
Williams County has 3.3 HVAC and plumbing companies per 10,000 households, 48% below the U.S. rate of 6.3. Spending per company is $9M, 90% above the U.S. figure of $4.8M. At the national ratio of HVAC and plumbing companies to household spending, Williams County would have about 10, against 5 on map listings. There is one business with payroll in the industry for every 1,263 households, against one for every 1,162 across the U.S.
How fast is Williams County, ND growing?
Population estimates put Williams County at 41,767 people in 2025, up 1.4% since 2020, slower than the U.S. (+3.1%). It has 15,154 households. The median household income in Williams County is $85,595 a year, 6% above the U.S. median of $80,734. That fell 1.8% 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. Williams County scores 73 for HVAC and plumbing companies (upper middle), #139 of 1,707 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Williams 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 Williams County
Screening a site or an acquisition in Williams 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 Williams 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.