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Website Design for Plumbers in California

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California, city by city.

California has 11,686 plumbing, heating and air-conditioning contractors with paid employees (Census County Business Patterns 2023): 3 for every 10,000 residents, against 3.3 nationally.

The Census counts plumbing, heating and air-conditioning contractors together, so this figure includes HVAC companies.

CityPopulation, 2025CountyPlumbing & HVAC firms in county, 2023
Los Angeles3,869,089Los Angeles County2,765
San Diego1,406,106San Diego County1,072
San Jose989,814Santa Clara County512
San Francisco826,079San Francisco County162
Fresno555,549Fresno County229
Sacramento536,449Sacramento County461
Long Beach450,469Los Angeles County2,765
Oakland440,838Alameda County373
Bakersfield422,165Kern County208
Anaheim341,008Orange County1,028
Stockton324,597San Joaquin County202
Riverside323,057Riverside County879
Irvine318,764Orange County1,028
Santa Ana315,586Orange County1,028
Chula Vista275,533San Diego County1,072
Santa Clarita228,430Los Angeles County2,765
Fremont226,442Alameda County373
San Bernardino222,044San Bernardino County563
Fontana221,223San Bernardino County563
Modesto219,652Stanislaus County146
Moreno Valley214,263Riverside County879
Oxnard199,651Ventura County335
Huntington Beach191,451Orange County1,028
Glendale187,160Los Angeles County2,765
Ontario187,013San Bernardino County563
Elk Grove185,007Sacramento County461
Santa Rosa179,437Sonoma County262
Rancho Cucamonga177,856San Bernardino County563
Oceanside170,483San Diego County1,072
Garden Grove170,455Orange County1,028
Lancaster170,084Los Angeles County2,765
Roseville167,302Placer County209
Palmdale161,845Los Angeles County2,765
Corona161,734Riverside County879
Salinas159,134Monterey County131
Hayward157,113Alameda County373
Sunnyvale156,577Santa Clara County512
Pomona147,807Los Angeles County2,765
Visalia146,541Tulare County104
Escondido146,030San Diego County1,072
Victorville141,395San Bernardino County563
Fullerton138,675Orange County1,028
Torrance138,391Los Angeles County2,765
Orange138,365Orange County1,028
Pasadena135,804Los Angeles County2,765
Santa Clara133,446Santa Clara County512
Clovis129,347Fresno County229
Simi Valley124,861Ventura County335
Vallejo123,287Solano County110
Concord123,261Contra Costa County324
Fairfield122,489Solano County110
Thousand Oaks122,230Ventura County335
Berkeley121,911Alameda County373
Antioch118,958Contra Costa County324
Menifee118,592Riverside County879
Temecula114,865Riverside County879
Richmond114,861Contra Costa County324
Murrieta114,124Riverside County879
Carlsbad112,260San Diego County1,072
Santa Maria111,390Santa Barbara County185
Ventura109,914Ventura County335
Costa Mesa108,881Orange County1,028
Downey108,468Los Angeles County2,765
Jurupa Valley107,311Riverside County879
Rialto106,554San Bernardino County563
West Covina105,301Los Angeles County2,765
Chico105,081Butte County63
El Monte105,075Los Angeles County2,765
Vacaville103,850Solano County110
San Mateo103,337San Mateo County233
Burbank102,988Los Angeles County2,765
Hesperia102,605San Bernardino County563
Tracy101,901San Joaquin County202
El Cajon101,755San Diego County1,072
Inglewood101,662Los Angeles County2,765
Daly City101,261San Mateo County233
Merced99,724Merced County63
Vista98,274San Diego County1,072
Norwalk97,104Los Angeles County2,765
Chino96,957San Bernardino County563
Manteca96,693San Joaquin County202
San Marcos94,908San Diego County1,072
Indio94,269Riverside County879
Redding94,092Shasta County68
Hemet93,649Riverside County879
Folsom91,983Sacramento County461
Carson90,808Los Angeles County2,765
Compton90,500Los Angeles County2,765
Mission Viejo90,484Orange County1,028
Santa Monica90,082Los Angeles County2,765
South Gate90,071Los Angeles County2,765
Westminster88,966Orange County1,028
Rancho Cordova87,554Sacramento County461
Santa Barbara86,422Santa Barbara County185

Seasons in California. Demand is fairly steady, with drain and sewer calls rising when the winter rains arrive and kitchen drain clogs around holiday cooking. Older homes with aging supply lines keep leak and repipe work coming between seasons.

Sources: U.S. Census Bureau, Population Estimates (Vintage 2025) and County Business Patterns 2023. County counts include only businesses with paid employees.

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