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Table 1 - Registration Rates by County

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County Total Registered Unregistered Instantaneous Long term Chronic Dealer Front No plate Out of state Out of country Unknown % unreg
Los Angeles 25,835 20,153 749 535 211 3 317 2,146 15 214 3 2,238 3.53
San Diego 9,584 7,226 385 300 83 2 110 708 3 230 22 900 4.99
Orange 9,468 7,421 251 171 76 4 169 665 18 138 4 802 3.20
San Bernardino 4,417 3,115 117 72 44 1 89 314 11 148 0 623 3.52
Riverside 4,262 3,026 144 83 60 1 94 238 6 123 0 631 4.41
Santa Clara 4,109 3,084 91 55 33 3 74 271 6 43 0 540 2.80
Alameda 3,529 2,688 72 54 18 0 52 238 1 38 0 440 2.56
Sacramento 3,337 2,573 90 50 37 3 53 233 12 37 0 339 3.31
San Francisco 2,840 2,154 100 74 25 1 33 226 3 85 0 239 4.37
San Mateo 2,705 2,112 75 54 19 2 35 144 8 60 0 271 3.38
Contra Costa 2,597 1,929 42 30 12 0 44 131 3 21 0 427 2.08
Ventura 2,073 1,574 61 48 13 0 43 120 1 22 0 252 3.64
Fresno 2,059 1,652 67 53 14 0 33 146 0 2 0 159 3.82
Santa Barbara 1,464 1,144 37 27 10 0 20 74 0 32 0 157 3.08
Sonoma 1,404 1,100 28 17 11 0 7 54 1 7 0 207 2.47
Kern 1,401 1,042 46 37 9 0 16 130 1 4 0 162 4.17
Stanislaus 1,329 1,076 40 29 11 0 2 94 1 8 0 108 3.58
All counties 98,817 75,168 2,677 1,906 749 22 1,302 7,091 108 1,599 111 10,761 3.38

Key: County = the county where the data was collected, not necessarily the county where the vehicle was registered.
Registered = vehicle had a current California registration.
Unregistered = vehicle had an expired California registration.
Front = vehicle's LPN was captured from the front of the vehicle. Because California vehicles only have registration tags for rear license plates, no registration information is available from the front plate.
Dealer = vehicle's LPN was a paper plate or a dealership plate of a newly purchased vehicle being used until the issued license plate is received.
Unknown = vehicles for which either the photographic quality prevented identification of the month if the vehicle had a registration year of 2000 or the year sticker was missing.