County crime profile · 2024 · very large county · property-led
At 1,165,927 residents, Contra Costa 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).
Data updated 2026-08-24
Contra Costa County, CA reported 41 violent crimes per 100,000 in FBI UCR 2024
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Contra Costa County, CA agencies reported 479 violent and 2,333 property offenses. That equals about 41 violent and 200 property crimes per 100,000 using a verified Census population join. Table 10 coverage is a voluntary subset of U.S. counties.
2020–2024 direction
Across 4 comparable reporting years, the rate moved from 25.6 per 100,000 in 2020 to 41.1 in 2024 (+60.7%). The highest observed value was 44.1 in 2023 and the lowest 25.6 in 2020. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Position in the state cohort
At 41.1 reported violent offenses per 100,000 residents in 2024, Contra Costa County ranks 48 of 56 — above 8 of the 55 other California counties whose 2024 submission passes this site’s completeness test and carries a matched Census denominator. That is -68.3% 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
Violent offenses are 17.0% of the 2,812 Part I offenses reported in Contra Costa County for 2024, against a median of 29.6% across comparable California counties — a gap of 12.5 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.
Property-offense composition
Larceny-theft is 55.5% of reported property offenses in Contra Costa County, against a cohort median of 66.2%. The remainder is burglary (959) and motor vehicle theft (79). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
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.
| Category | Count |
|---|---|
| Property Crime | 2,333 |
| Burglary | 959 |
| Larceny-Theft | 1,295 |
| Motor Vehicle Theft | 79 |
| Arson | 16 |
| Violent Crime | 479 |
| Murder | 2 |
| Rape | 36 |
| Robbery | 71 |
| Aggravated Assault | 370 |
Contra Costa County's crime figures on this page originate from Contra Costa 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.
A per-capita rate is easiest to read against places of similar scale, so these are the California counties closest to Contra Costa County in population. Their populations run from 764,442 to 1,008,654, against 1,165,927 here. Or launch the side-by-side compare tool to benchmark two jurisdictions directly.
State atlas: California · Compare · Rankings
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.
Read our methodology , how this data is sourced, computed, and verified.
Every figure on PlainCrime is rendered directly from FBI Uniform Crime Reporting (UCR) source data, no number is typed in by an editor. This page draws directly on FBI Uniform Crime Reporting source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.