Plumbing and HVAC contractors / District of Columbia
How many plumbing, heating and air-conditioning contractors are in District of Columbia?
The Census Bureau counted 37 plumbing, heating and air-conditioning contractors with paid employees in District of Columbia in 2023. That is 19.4% more than in 2017.
DISTRICT OF COLUMBIA · 2023
The count
37
plumbing, heating and air-conditioning contractors with paid employees
- Employees
- 1,772
- Average per site
- 47.9
- Change since 2017
- +19.4%
- State rank
- 51 of 51
What the number means
District of Columbia had 37 plumbing, heating and air-conditioning contractors in 2023, ranking number 51 among the 50 states and the District of Columbia. Together they employed 1,772 people and paid $133 million in annual payroll, an average of 47.9 employees per site.
These businesses make up 0.16% of every employer establishment in District of Columbia, below the 1.33% national share. A site count is not the same as the number of companies: a chain with 40 locations counts 40 times.
35% of plumbing, heating and air-conditioning contractors in District of Columbia have fewer than 5 employees, against 58% across the U.S.
District of Columbia holds 0.0% of the nation's plumbing, heating and air-conditioning contractors and 0.3% of all U.S. employer establishments, so, measured against the state's overall size, the trade is under-represented. The most common size class is under 5 employees (13 sites). Average payroll per employee is $75,030, against $73,693 for the U.S. trade.
With only 37 sites, adding or losing a few moves the percentage change a lot, and Census noise on employment and payroll matters more. Read the percentages as rough.
Size of the businesses
| Employees per site | Share | Sites | Share |
|---|---|---|---|
| Under 5 | 13 | 36.1% | |
| 5 to 9 | 6 | 16.7% | |
| 10 to 19 | 3 | 8.3% | |
| 20 to 49 | 6 | 16.7% | |
| 50 to 99 | 3 | 8.3% | |
| 100 to 249 | 5 | 13.9% | |
| 250 to 499 | 0 | 0.0% |
Count since 2017
Index: 2017 = 100. Employer establishments only. 2017 count 31; 2019 count 31; 2022 count 35; 2023 count 37. Employment +13.6% since 2017.
Biggest other trades in District of Columbia
| Trade | Sites | Employees | Since 2017 |
|---|---|---|---|
| Full-service restaurants | 974 | 29,842 | +7.4% |
| Child day care | 303 | 4,282 | +11.8% |
| Coffee shops and snack bars | 266 | 4,202 | +25.5% |
| Beauty salons | 154 | 1,050 | −15.8% |
| Fitness centers | 121 | 2,175 | −2.4% |
| Janitorial services | 115 | 5,139 | +19.8% |
| Pet care services | 42 | 399 | +16.7% |
| General auto repair | 31 | 160 | −3.1% |
Plumbing and HVAC contractors in nearby ranks
All states for plumbing, heating and air-conditioning contractors · Every trade in District of Columbia
Questions
How many plumbing, heating and air-conditioning contractors are in District of Columbia?
The Census Bureau's County Business Patterns counted 37 plumbing, heating and air-conditioning contractors with paid employees in District of Columbia in 2023. That ranks District of Columbia number 51 among the 50 states and the District of Columbia.
Is the number of plumbing, heating and air-conditioning contractors in District of Columbia growing?
Between 2017 and 2023 the count grew (19.4%), from 31 to 37. Across the United States the count changed by +8.5% over the same period. These years include the 2020 pandemic.
Does this count include self-employed owners with no staff?
No. County Business Patterns covers establishments with at least one paid employee. A sole proprietor with no employees is counted in a separate Census series called Nonemployer Statistics, which this site does not use yet, so the real number of people working in this trade is higher than the figure shown.
Read this before using the number
These counts describe how many businesses already exist. They say nothing about demand, profit, competition near you or how much any owner earns, and we make no estimate of income. Check local licensing, costs and rules before acting on any figure here. See the disclaimer.
Source: U.S. Census Bureau, County Business Patterns (2023; change measured against 2017, 2019 and 2022). Establishments with paid employees only; employment and payroll carry Census noise infusion. Retrieved November 2, 2026. Method and sources.