Open Policing Data Hub

FBI agency record

San Mateo County Sheriff's Office

County agencyCA0410000NIBRS since 2021LEMAS 2020

San Mateo County, California

Serves ~139,177 residents · LEMAS survey

Crime trendsNIBRSLEMASPoliciesOpen dataPOP projects

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Crime & staffing trends

No snapshot trend data is stored for this agency yet. Explore its full crime and employment history directly on the FBI Crime Data Explorer, which covers UCR summary data, NIBRS incidents, and police employment for ORI CA0410000.

NIBRS incident detail

NIBRS victims by offense · Jan 2021Dec 2024

Incident-based victim counts reported through NIBRS, from the FBI Crime Data Explorer.

Aggravated Assault: victim & offender age · 582 victims, 600 offenders
Victim sex
Male394 (68%)
Female180 (31%)
Unknown8 (1%)
Victim race
White466 (84%)
Black or African American35 (6%)
Asian34 (6%)
Native Hawaiian or Other Pacific Islander18 (3%)
Weapons involved
Personal Weapons152 (30%)
Other138 (27%)
Knife/Cutting Instrument65 (13%)
Blunt Object63 (12%)
Motor Vehicle/Vessel27 (5%)
Handgun21 (4%)

Top 6 of 13 categories shown.

Incident location
Residence/Home166 (29%)
Highway/Road/Alley/Street/Sidewalk121 (21%)
Jail/Prison/Penitentiary/Corrections Facility90 (15%)
Parking/Drop Lot/Garage45 (8%)
Air/Bus/Train Terminal27 (5%)
Other/Unknown26 (4%)

Top 6 of 28 categories shown.

Victim–offender relationship
Relationship Unknown156 (23%)
Stranger146 (22%)
Acquaintance118 (18%)
Boyfriend/Girlfriend52 (8%)
Otherwise Known45 (7%)
Spouse25 (4%)

Top 6 of 19 categories shown.

Co-occurring offenses
Destruction/Damage/Vandalism of Property29 (19%)
Weapon Law Violations22 (14%)
Kidnapping/Abduction18 (12%)
Drug/Narcotic Violations16 (11%)
Simple Assault14 (9%)
Burglary/Breaking & Entering12 (8%)

Top 6 of 21 categories shown.

Open data

Staffing

LEMAS 2020 survey
Full-time sworn
319
Part-time sworn
6
Full-time civilian
216
Part-time civilian
60
Total FT employees
727
Population served
139,177
Operating budget
$280,536,148
Body-worn cameras: yesCommunity policing plan: yes

Source: BJS LEMAS 2020 (ICPSR) · all waves 1987–2020

Earlier LEMAS surveys
WaveFT swornFT civilianBudget
2013375170$198,984,114
2003305161$52,544,046
2000303176$80,000,000
1999325252
1997302206
1990327145

Staffing as reported in each BJS LEMAS survey wave; wave links go to the ICPSR study pages.

FBI police employment

Employment counts for this agency are available through the FBI Crime Data Explorer.

Open data

San Mateo County Sheriff Data Transparency Page
calls for service

POP conference activity

No POP conference submissions matched to this agency in our records.

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Compared by size, crime mix, rates, and staffing within the same agency class · precomputed from FBI trend and NIBRS data. Methodology: agency-metrics/metrics-spec.md

Assessing a response? These agencies double as informal comparison groups: if your trend falls while comparable agencies hold steady, the case that your response worked is much stronger. See the project report template.