PUBLIC REGISTRY INFORMATION

545 registered sex offenders in San Mateo County, California

See the October 2026 registry snapshot for San Mateo County and search the map near a specific address.

Registry snapshot

October 2026
Registry records
545
Registry source
California Sex Offender Registry

This is a snapshot. Check the official registry for current information.

Registry statistics

Population and rate comparison
Registry records per 10,000 residents
7.3
52% below the California statewide rateCalifornia: 15.4 per 10,000
Population estimate
742,340
About 1 registry record per
1,362 residents
Rank by registry rate#55 of 58 California counties

U.S. Census Bureau, ACS 5-year estimate.

About this snapshot

The October 2026 snapshot lists 545 registry records in San Mateo County, California. With an estimated population of 742,340, that is 7.3 registry records per 10,000 residents. This is 52% below the California statewide rate (15.4 per 10,000).

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Cities near San Mateo County

LocationRegistry recordsPopulation estimateRecords per 10,000
Sunnyvale116154,2367.5
Redwood City10882,44713.1
East Palo Alto7329,06925.1
Daly City68101,9646.7
San Mateo55103,1055.3
South San Francisco4964,3057.6
San Bruno3142,3077.3
Pacifica2637,2617.0
Belmont1127,3374.0
Burlingame1130,5253.6
Half Moon Bay1111,3919.7
Millbrae822,6893.5
Broadmoor74,58615.3
Foster City732,7922.1
Colma31,63618.3
Moss Beach32,68311.2
South San Francis2——
Brisbane14,6922.1
E Palo Alto1——
Pescadero169114.5

ZIP codes near San Mateo County

LocationRegistry recordsPopulation estimateRecords per 10,000
ZIP code 9511613448,04227.9
ZIP code 943037546,87916.0
ZIP code 940636334,43318.3
ZIP code 940806164,7619.4
ZIP code 940154564,0917.0
ZIP code 940143345,3157.3
ZIP code 944013035,2958.5
ZIP code 940442637,2747.0
ZIP code 940252440,7215.9
ZIP code 944031443,2763.2
ZIP code 940021327,5344.7
ZIP code 940701230,4473.9
ZIP code 940101043,0252.3
ZIP code 940191014,4196.9
ZIP code 94404935,8812.5
ZIP code 94030822,6893.5
ZIP code 94301417,5082.3
ZIP code 9403832,68311.2
ZIP code 9400514,6922.1
ZIP code 9402011,6945.9

Other counties in California

LocationRegistry recordsPopulation estimateRecords per 10,000
Santa Clara County2,5151,902,04713.2
Orange County2,1733,165,8206.9
Fresno County2,0061,016,72519.7
Stanislaus County1,074553,99019.4
Tulare County987478,69320.6
Solano County730451,91816.2
Monterey County621437,61314.2
Merced County613290,20121.1
Santa Barbara County578443,70113.0
Shasta County553181,43630.5
Sonoma County547485,04011.3
Santa Cruz County301264,92611.4
El Dorado County295192,66215.3
Sutter County24798,85725.0
Tehama County23265,16735.6
Siskiyou County14943,46634.3
Tuolumne County13054,49823.9
Nevada County120102,48111.7
Del Norte County9227,10733.9
Sierra County72,74625.5

Each area shows its own total. City, county, and ZIP totals can overlap. Population figures, where shown: U.S. Census Bureau, ACS 5-year estimate.

Frequently asked questions

How many registered sex offenders are listed in San Mateo County?

The October 2026 snapshot lists 545 registry records in San Mateo County, California. Counts may differ from official registry totals. Check the official registry for current details.

How do city, county, and ZIP totals relate?

City, county, and ZIP boundaries can overlap, so the same registry record may appear in more than one area.

How can I check registry information near an address?

Open the free interactive map, enter an address, and choose a search radius. Verify identity and current status with the official registry.

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