Saturation ranking
Where sign manufacturing & installation is most and least saturated in California
Every California market with sourced Sign Shops 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
- 612
- 2023 County Business Patterns
- State median density
- 0.1
- Per 10,000 residents, counties
- Counties ranked
- 21
- of 31 with data
- Cities ranked
- 13
- of 42 with data
Most saturated counties for sign shops
21 of 31 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 | Orange County3,149,507 residents | 100 | 0.3 | +120% | Densely served |
| 2 | San Diego County3,282,248 residents | 77 | 0.2 | +62% | Densely served |
| 3 | Fresno County1,035,456 residents | 19 | 0.2 | +27% | Above average |
| 4 | Santa Barbara County442,065 residents | 8 | 0.2 | +25% | Above average |
| 5 | Ventura County830,851 residents | 15 | 0.2 | +25% | Above average |
| 6 | San Luis Obispo County282,367 residents | 5 | 0.2 | +23% | Above average |
| 7 | Sonoma County486,444 residents | 8 | 0.2 | +14% | Typical |
| 8 | San Mateo County743,568 residents | 12 | 0.2 | +12% | Typical |
| 9 | Alameda County1,636,630 residents | 24 | 0.1 | +2% | Typical |
| 10 | Los Angeles County9,694,934 residents | 140 | 0.1 | 0% | Typical |
| 11 | San Bernardino County2,224,091 residents | 32 | 0.1 | -0% | Typical |
| 12 | Sacramento County1,618,460 residents | 23 | 0.1 | -2% | Typical |
| 13 | San Joaquin County823,815 residents | 11 | 0.1 | -8% | Typical |
| 14 | Riverside County2,544,916 residents | 31 | 0.1 | -16% | Below average |
| 15 | Monterey County433,729 residents | 5 | 0.1 | -20% | Below average |
State median for this industry: 0.1 establishments per 10,000 residents. A high figure means more provision per resident, not more demand.
Least saturated counties for sign shops
The same 21 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 | San Francisco County826,079 residents | 7 | 0.1 | -41% | Thinly served |
| 2 | Santa Clara County1,914,391 residents | 18 | 0.1 | -35% | Below average |
| 3 | Kern County927,068 residents | 9 | 0.1 | -33% | Below average |
| 4 | Contra Costa County1,170,070 residents | 12 | 0.1 | -29% | Below average |
| 5 | Solano County455,376 residents | 5 | 0.1 | -24% | Below average |
| 6 | Placer County442,081 residents | 5 | 0.1 | -22% | Below average |
| 7 | Monterey County433,729 residents | 5 | 0.1 | -20% | Below average |
| 8 | Riverside County2,544,916 residents | 31 | 0.1 | -16% | Below average |
| 9 | San Joaquin County823,815 residents | 11 | 0.1 | -8% | Typical |
| 10 | Sacramento County1,618,460 residents | 23 | 0.1 | -2% | Typical |
| 11 | San Bernardino County2,224,091 residents | 32 | 0.1 | -0% | Typical |
| 12 | Los Angeles County9,694,934 residents | 140 | 0.1 | 0% | Typical |
| 13 | Alameda County1,636,630 residents | 24 | 0.1 | +2% | Typical |
| 14 | San Mateo County743,568 residents | 12 | 0.2 | +12% | Typical |
| 15 | Sonoma County486,444 residents | 8 | 0.2 | +14% | Typical |
State median for this industry: 0.1 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 sign shops
13 of 42 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 | SanteeSan Diego, 1,273 businesses in total | 6 | 0.47% | +2112% | Densely served |
| 2 | South El MonteLos Angeles, 1,852 businesses in total | 6 | 0.32% | +1420% | Densely served |
| 3 | Santa Fe SpringsLos Angeles, 2,171 businesses in total | 7 | 0.32% | +1413% | Densely served |
| 4 | Laguna HillsOrange, 1,901 businesses in total | 5 | 0.26% | +1134% | Densely served |
| 5 | OntarioSan Bernardino, 5,487 businesses in total | 10 | 0.18% | +755% | Densely served |
| 6 | Santa AnaOrange, 8,181 businesses in total | 12 | 0.15% | +588% | Densely served |
| 7 | CoronaRiverside, 5,711 businesses in total | 8 | 0.14% | +557% | Densely served |
| 8 | AnaheimOrange, 9,049 businesses in total | 12 | 0.13% | +522% | Densely served |
| 9 | OrangeOrange, 5,761 businesses in total | 6 | 0.10% | +389% | Densely served |
| 10 | BakersfieldKern, 10,791 businesses in total | 6 | 0.06% | +161% | Densely served |
| 11 | San DiegoSan Diego, 42,106 businesses in total | 18 | 0.04% | +101% | Densely served |
| 12 | IrvineOrange, 14,947 businesses in total | 6 | 0.04% | +88% | Densely served |
| 13 | SacramentoSacramento, 19,687 businesses in total | 5 | 0.03% | +19% | Above average |
Statewide, 0.02% 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.
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 sign shops 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.