Saturation ranking
Where roofing contractors is most and least saturated in California
Every California market with sourced Roofing data, ranked on how much provision it already has. Counties are measured per 10,000 residents. Cities are measured as a share of the businesses in the same ZIP codes, because a city’s establishment counts cover its ZIP codes rather than its city limits and cannot be divided by its municipal population. Neither measure says anything about revenue or profitability, and a crowded market is not automatically a bad one: it is also where the most businesses come up for sale.
- Statewide establishments
- 2,926
- 2023 County Business Patterns
- State median density
- 0.9
- Per 10,000 residents, counties
- Counties ranked
- 45
- of 50 with data
- Cities ranked
- 126
- of 211 with data
Most saturated counties for roofing
45 of 50 counties with sourced data qualify for this ranking. Markets with fewer than 5 establishments are excluded at both levels, because a single opening or closing would move them enough to dominate the list. Counties under 2,000 residents are also excluded, where a per-capita figure is arithmetically true and analytically useless.
| # | County | Establishments | Per 10k | Vs state median | Reading |
|---|---|---|---|---|---|
| 1 | Amador County41,876 residents | 10 | 2.4 | +164% | Densely served |
| 2 | Nevada County101,911 residents | 24 | 2.4 | +160% | Densely served |
| 3 | El Dorado County192,323 residents | 45 | 2.3 | +158% | Densely served |
| 4 | Calaveras County46,605 residents | 10 | 2.1 | +137% | Densely served |
| 5 | Mendocino County88,122 residents | 18 | 2.0 | +125% | Densely served |
| 6 | Shasta County181,648 residents | 30 | 1.7 | +82% | Densely served |
| 7 | Sutter County98,787 residents | 15 | 1.5 | +68% | Densely served |
| 8 | Tuolumne County53,160 residents | 8 | 1.5 | +66% | Densely served |
| 9 | Placer County442,081 residents | 64 | 1.4 | +60% | Densely served |
| 10 | San Benito County70,082 residents | 10 | 1.4 | +57% | Densely served |
| 11 | Tehama County64,665 residents | 9 | 1.4 | +54% | Densely served |
| 12 | Sonoma County486,444 residents | 65 | 1.3 | +47% | Above average |
| 13 | Butte County209,211 residents | 26 | 1.2 | +37% | Above average |
| 14 | Siskiyou County42,013 residents | 5 | 1.2 | +31% | Above average |
| 15 | Santa Barbara County442,065 residents | 51 | 1.2 | +27% | Above average |
State median for this industry: 0.9 establishments per 10,000 residents. A high figure means more provision per resident, not more demand.
Least saturated counties for roofing
The same 45 counties, read from the bottom of the ordering upward. Thin provision is worth checking against the neighbouring counties before treating it as an opening.
| # | County | Establishments | Per 10k | Vs state median | Reading |
|---|---|---|---|---|---|
| 1 | Merced County297,260 residents | 9 | 0.3 | -67% | Thinly served |
| 2 | Imperial County181,411 residents | 7 | 0.4 | -57% | Thinly served |
| 3 | Kern County927,068 residents | 38 | 0.4 | -55% | Thinly served |
| 4 | Tulare County485,146 residents | 22 | 0.5 | -50% | Thinly served |
| 5 | Los Angeles County9,694,934 residents | 487 | 0.5 | -45% | Thinly served |
| 6 | Yuba County88,691 residents | 5 | 0.6 | -38% | Below average |
| 7 | San Francisco County826,079 residents | 52 | 0.6 | -31% | Below average |
| 8 | Marin County253,694 residents | 17 | 0.7 | -26% | Below average |
| 9 | Fresno County1,035,456 residents | 71 | 0.7 | -24% | Below average |
| 10 | San Joaquin County823,815 residents | 57 | 0.7 | -24% | Below average |
| 11 | Riverside County2,544,916 residents | 186 | 0.7 | -19% | Below average |
| 12 | Contra Costa County1,170,070 residents | 86 | 0.7 | -19% | Below average |
| 13 | Santa Clara County1,914,391 residents | 141 | 0.7 | -19% | Below average |
| 14 | San Bernardino County2,224,091 residents | 165 | 0.7 | -18% | Below average |
| 15 | Humboldt County131,647 residents | 10 | 0.8 | -16% | Below average |
State median for this industry: 0.9 establishments per 10,000 residents. A low figure can mean a genuine gap, or a market served from the next county over.
Most saturated cities for roofing
126 of 211 cities with sourced data qualify for this ranking. Markets with fewer than 5 establishments are excluded at both levels, because a single opening or closing would move them enough to dominate the list. Cities with fewer than 500 businesses in total are also excluded, because on a base that small the industry’s share moves on rounding.
| # | City | Establishments | Share of local | Vs state share | Reading |
|---|---|---|---|---|---|
| 1 | CeresStanislaus, 676 businesses in total | 9 | 1.33% | +511% | Densely served |
| 2 | Fort BraggMendocino, 503 businesses in total | 6 | 1.19% | +447% | Densely served |
| 3 | TruckeeNevada, 1,148 businesses in total | 13 | 1.13% | +419% | Densely served |
| 4 | Jurupa Valley1,066 businesses in total | 12 | 1.13% | +416% | Densely served |
| 5 | Cathedral CityRiverside, 914 businesses in total | 10 | 1.09% | +402% | Densely served |
| 6 | NorcoRiverside, 840 businesses in total | 9 | 1.07% | +391% | Densely served |
| 7 | AntiochContra Costa, 1,538 businesses in total | 15 | 0.98% | +347% | Densely served |
| 8 | HollisterSan Benito, 1,025 businesses in total | 9 | 0.88% | +303% | Densely served |
| 9 | WildomarRiverside, 577 businesses in total | 5 | 0.87% | +297% | Densely served |
| 10 | LodiSan Joaquin, 1,796 businesses in total | 15 | 0.84% | +283% | Densely served |
| 11 | South Lake TahoeEl Dorado, 1,082 businesses in total | 9 | 0.83% | +281% | Densely served |
| 12 | EscondidoSan Diego, 4,331 businesses in total | 36 | 0.83% | +281% | Densely served |
| 13 | San MarcosSan Diego, 2,711 businesses in total | 22 | 0.81% | +272% | Densely served |
| 14 | VistaSan Diego, 3,017 businesses in total | 24 | 0.80% | +265% | Densely served |
| 15 | HemetRiverside, 1,514 businesses in total | 12 | 0.79% | +263% | Densely served |
| 16 | PerrisRiverside, 1,263 businesses in total | 10 | 0.79% | +263% | Densely served |
| 17 | PacificaSan Mateo, 637 businesses in total | 5 | 0.78% | +260% | Densely served |
| 18 | WatsonvilleSanta Cruz, 1,538 businesses in total | 12 | 0.78% | +258% | Densely served |
| 19 | OrovilleButte, 774 businesses in total | 6 | 0.78% | +255% | Densely served |
| 20 | OxnardVentura, 3,760 businesses in total | 28 | 0.74% | +241% | Densely served |
| 21 | PlacervilleEl Dorado, 974 businesses in total | 7 | 0.72% | +230% | Densely served |
| 22 | VacavilleSolano, 2,017 businesses in total | 14 | 0.69% | +218% | Densely served |
| 23 | BeaumontRiverside, 731 businesses in total | 5 | 0.68% | +214% | Densely served |
| 24 | Yuba CitySutter, 1,959 businesses in total | 13 | 0.66% | +204% | Densely served |
| 25 | RialtoSan Bernardino, 1,231 businesses in total | 8 | 0.65% | +198% | Densely served |
Statewide, 0.22% of California businesses are in this industry. A higher local share means the industry takes up more of the local business base than it does statewide.
City figures are aggregated over the ZIP codes the Postal Service assigns to each place, which do not follow municipal boundaries. That is why the comparison here is a share of the businesses in those same ZIP codes rather than a figure per resident: both sides then cover the same ground, so a city that loses establishments to a separately named ZIP loses its denominator with them.
Most underserved cities for roofing
The bottom of the same ordering. These are the California cities carrying the least roofing provision per resident among those that clear both floors.
| # | City | Establishments | Share of local | Vs state share | Reading |
|---|---|---|---|---|---|
| 1 | IrvineOrange, 14,947 businesses in total | 5 | 0.03% | -85% | Thinly served |
| 2 | Los AngelesLos Angeles, 77,828 businesses in total | 35 | 0.04% | -79% | Thinly served |
| 3 | San DiegoSan Diego, 42,106 businesses in total | 32 | 0.08% | -65% | Thinly served |
| 4 | TorranceLos Angeles, 7,600 businesses in total | 6 | 0.08% | -64% | Thinly served |
| 5 | PasadenaLos Angeles, 7,697 businesses in total | 7 | 0.09% | -58% | Thinly served |
| 6 | BurbankLos Angeles, 5,899 businesses in total | 6 | 0.10% | -53% | Thinly served |
| 7 | Newport BeachOrange, 6,234 businesses in total | 7 | 0.11% | -49% | Thinly served |
| 8 | San FranciscoSan Francisco, 33,575 businesses in total | 38 | 0.11% | -48% | Thinly served |
| 9 | TemeculaRiverside, 4,281 businesses in total | 5 | 0.12% | -46% | Thinly served |
| 10 | Huntington BeachOrange, 6,263 businesses in total | 8 | 0.13% | -41% | Thinly served |
| 11 | Long BeachLos Angeles, 9,885 businesses in total | 14 | 0.14% | -35% | Below average |
| 12 | OntarioSan Bernardino, 5,487 businesses in total | 8 | 0.15% | -33% | Below average |
| 13 | TustinOrange, 3,361 businesses in total | 5 | 0.15% | -32% | Below average |
| 14 | San MateoSan Mateo, 4,307 businesses in total | 7 | 0.16% | -25% | Below average |
| 15 | Elk GroveSacramento, 3,042 businesses in total | 5 | 0.16% | -25% | Below average |
| 16 | Redondo BeachLos Angeles, 2,814 businesses in total | 5 | 0.18% | -19% | Below average |
| 17 | San ClementeOrange, 2,771 businesses in total | 5 | 0.18% | -17% | Below average |
| 18 | Chula VistaSan Diego, 4,885 businesses in total | 9 | 0.18% | -16% | Below average |
| 19 | PomonaLos Angeles, 2,655 businesses in total | 5 | 0.19% | -14% | Typical |
| 20 | WhittierLos Angeles, 3,060 businesses in total | 6 | 0.20% | -10% | Typical |
| 21 | FullertonOrange, 4,049 businesses in total | 8 | 0.20% | -9% | Typical |
| 22 | Santa CruzSanta Cruz, 2,943 businesses in total | 6 | 0.20% | -7% | Typical |
| 23 | FremontAlameda, 5,575 businesses in total | 12 | 0.22% | -1% | Typical |
| 24 | ClovisFresno, 2,785 businesses in total | 6 | 0.22% | -1% | Typical |
| 25 | MurrietaRiverside, 3,203 businesses in total | 7 | 0.22% | +0% | Typical |
Statewide, 0.22% of California businesses are in this industry. A lower local share can mean a genuine gap, or a market served from the next town over.
How to read these rankings
- Both measures are supply measures. They say nothing about how much each business earns, how large it is, or how much demand comes from outside the market.
- The two levels are not directly comparable to each other. A county figure is establishments per resident; a city figure is this industry’s share of the local business base against the statewide share. Compare counties to counties and cities to cities.
- A thinly served market can be a genuine gap or a market already served from a neighbouring town. The individual market pages list the nearest comparable places for exactly this check.
- A densely served market means competition, but it is also where the largest pool of existing businesses sits, and therefore where the most owners reach retirement each year.
- Counties are the more stable measure. City figures rest on ZIP code geography, which the Postal Service redraws as it pleases, so a city can gain or lose a ZIP between years.
Full roofing data for California/All industry rankings/Methodology
Sources
- U.S. Census Bureau, 2023 County Business Patterns. Establishment counts, employment and annual payroll by NAICS. Retrieved 2026-09-08.
- U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (2026Q1). Quarterly establishment counts and employment for employers covered by unemployment insurance. Retrieved 2026-09-08.
- U.S. Census Bureau, 2023 ZIP Code Business Patterns. Establishment counts by ZIP code and NAICS, aggregated over the ZIP codes assigned to each city, including the all-industry totals used as the local business base. Retrieved 2026-09-10.