County crime profile · 2024 · very large county · property-led
San Mateo County, CA
At 764,442 residents, San Mateo County is a very large county in California. FBI UCR county totals below are read before any per-100,000 rate (Census denominator when matched).
San Mateo County, CA reported 31 violent crimes per 100,000 in FBI UCR 2024
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, San Mateo County, CA agencies reported 239 violent and 1,630 property offenses. That equals about 31 violent and 213 property crimes per 100,000 using a verified Census population join. Table 10 coverage is a voluntary subset of U.S. counties.
2024 UCR year
239 violent offenses
31/100K violent rate
What the 2024 FBI UCR record shows for San Mateo County, CA
Position in the state cohort
San Mateo County reported a lower violent-crime rate than most comparable California counties
At 31.3 reported violent offenses per 100,000 residents in 2024, San Mateo County ranks 50 of 56 — above 6 of the 55 other California counties whose 2024 submission passes this site’s completeness test and carries a matched Census denominator. That is -75.9% against the cohort median of 129.8. Counties that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
Offense mix
The reported mix leans further toward property offenses than the state cohort
Violent offenses are 12.8% of the 1,869 Part I offenses reported in San Mateo County for 2024, against a median of 29.6% across comparable California counties — a gap of 16.8 points. Offense mix is shaped by which agencies report and how incidents are classified as well as by the underlying offenses, so it describes the reported record rather than a settled difference in conditions.
2020–2024 direction
The reported violent-crime rate ended the window lower
Across 4 comparable reporting years, the rate moved from 41.7 per 100,000 in 2020 to 31.3 in 2024 (-25.1%). The highest observed value was 49.2 in 2022 and the lowest 31.3 in 2024. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
On a very large county row, county figures aggregate every participating agency inside the county. Participation is voluntary. Per-100,000 rates use a separately matched 2020 U.S. Census county population, never a Table 10 field; unmatched counties stay count-only. A large county line encloses very different communities.
Crime Breakdown (2024) · property-led · very large county
Category
Count
Property Crime
1,630
Burglary
262
Larceny-Theft
1,145
Motor Vehicle Theft
223
Arson
10
Violent Crime
239
Murder
1
Rape
49
Robbery
61
Aggravated Assault
128
Reporting Agency
San Mateo County Sheriff's Office NIBRS-participating
San Mateo County's crime figures on this page originate from San Mateo County Sheriff's Office's submission to the FBI's Uniform Crime Reporting Program.
This agency reports via NIBRS, the incident-based system that captures more detail per offense (multiple crimes per incident, victim/offender data) than the older summary counts.
Similar-Size Counties in California
A per-capita rate is easiest to read against places of similar scale, so these are the California counties closest to San Mateo County in population. Their populations run from 552,878 to 1,008,654, against 764,442 here. Or launch the
side-by-side compare tool
to benchmark two jurisdictions directly.
Source: FBI Uniform Crime Reporting (UCR) Program, Crime in the United States (CIUS) Table 10.
FBI Table 10 supplies county offense counts but no resident population. Where this page shows a per-100,000 rate, the denominator is a separately matched 2020 U.S. Census Bureau county population; unmatched county rows remain count-only. Statewide comparisons draw on the state UCR program. Verify with FBI.gov UCR and Census.gov QuickFacts.