County crime profile · 2024 · large county · property-led
At 70,973 residents, Lewis and Clark County is a large county in Montana. FBI UCR county totals below are read before any per-100,000 rate (Census denominator when matched).
Data updated 2026-09-05
Lewis and Clark County, MT reported 124 violent crimes per 100,000 in FBI UCR 2024
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Lewis and Clark County, MT agencies reported 88 violent and 240 property offenses. That equals about 124 violent and 338 property crimes per 100,000 using a verified Census population join. Table 10 coverage is a voluntary subset of U.S. counties.
Offense mix
Violent offenses are 26.8% of the 328 Part I offenses reported in Lewis and Clark County for 2024, against a median of 33.3% across comparable Montana counties — a gap of 6.5 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.
Position in the state cohort
At 124.0 reported violent offenses per 100,000 residents in 2024, Lewis and Clark County ranks 33 of 56 — above 23 of the 55 other Montana counties whose 2024 submission passes this site’s completeness test and carries a matched Census denominator. That is -8.8% against the cohort median of 135.9. Counties that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
2020–2024 direction
Across 5 comparable reporting years, the rate moved from 126.8 per 100,000 in 2020 to 124.0 in 2024 (-2.2%). The highest observed value was 169.1 in 2021 and the lowest 104.3 in 2023. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
On a 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 | 240 |
| Burglary | 44 |
| Larceny-Theft | 158 |
| Motor Vehicle Theft | 38 |
| Arson | 3 |
| Violent Crime | 88 |
| Murder | 0 |
| Rape | 22 |
| Robbery | 0 |
| Aggravated Assault | 66 |
Lewis and Clark County's crime figures on this page originate from Lewis and Clark 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 Montana counties closest to Lewis and Clark County in population. Their populations run from 31,134 to 104,357, against 70,973 here. Or launch the side-by-side compare tool to benchmark two jurisdictions directly.
State atlas: Montana · 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.
Put this to use
Use the Lewis and Clark County, MT FBI UCR county record to open cities inside the county, compare the state file, or look up another place.
County Table 10 totals are voluntary agency filings: incomplete coverage is not a county crime measure, and a countywide figure is not a neighbourhood verdict.
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.