Cities with the most
| City | Inspection stations |
|---|---|
| Los Angeles | 140 |
| San Diego | 68 |
| Sacramento | 45 |
| San Jose | 40 |
| Bakersfield | 38 |
| Fresno | 35 |
| Modesto | 24 |
| Fontana | 23 |
| Chula Vista | 23 |
| Riverside | 22 |
| Long Beach | 21 |
| Escondido | 21 |
| Stockton | 20 |
| Oakland | 18 |
| Lancaster | 17 |
| Ontario | 16 |
| Vista | 16 |
| Hayward | 15 |
| Moreno Valley | 15 |
| Santa Ana | 14 |
| San Bernardino | 14 |
| El Cajon | 14 |
| Palmdale | 14 |
| Garden Grove | 13 |
| Hesperia | 13 |
| Orange | 12 |
| Santa Rosa | 12 |
| Huntington Beach | 12 |
| Whittier | 12 |
| Pasadena | 12 |
| Redwood City | 12 |
| Mira Loma | 12 |
| Torrance | 11 |
| Santa Clarita | 11 |
| Vallejo | 11 |
| Fairfield | 11 |
| Tracy | 11 |
| South Gate | 11 |
| Rialto | 11 |
| Mission Viejo | 11 |
Overture Maps Places (release 2026-10-21.0) · CDLA Permissive 2.0 / Apache 2.0 / CC0
Largest brands and chains
| Brand or chain | Locations |
|---|---|
| Smog 'N Go - Rocklin | 5 |
| STAR Smog Center | 5 |
| Horizon smog 205 Oak St Brentwood CA 94513 | 5 |
| Smog Stop | 4 |
| Smog King Pleasanton | 4 |
| Smog Busters DMV Services | 3 |
| Manzur Only Test Center | 3 |
| Smog Time | 2 |
| Golden Estate Realty | 2 |
| Auto Chek Centers | 2 |
| Ultramar | 1 |
| Speedway | 1 |
| Smog Tech | 1 |
| Smog Dog Palm Desert | 1 |
| Registration Express Group | 1 |