Darby, PA has a F safety grade (7/100) with a violent crime rate of 831 per 100,000, 136% above the national average.
FBI UCR 2024 · per-capita rates · mid-size city
Darby (10,586 people) sits in the mid-size municipal band. This page opens with per-100,000 FBI UCR rates, then PA and national benchmarks.
Data updated 2026-09-05
Darby, PA is among the highest-crime cities in the country, and earns an F PlainCrime safety grade, where violent crime runs 136% above the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Darby, PA shows violent crime at 831.3 per 100,000 residents and property crime at 2,626.1 per 100,000. Violent crime runs 136% above the U.S. average. PlainCrime assigns grade F from those rates. Figures are voluntary agency submissions joined to population denominators; incomplete coverage can move the number.
Position in the state cohort
At 831.3 reported violent offenses per 100,000 residents in 2024, Darby ranks 13 of 838 — above 825 of the 837 other Pennsylvania cities whose 2024 submission passes this site’s completeness test. That is +1172.7% against the cohort median of 65.3. Cities 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 2008.8 per 100,000 in 2020 to 831.3 in 2024 (-58.6%). The highest observed value was 2008.8 in 2020 and the lowest 168.1 in 2021. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Comparable rate records
The nearest comparable 2024 records to Darby's 831.3 violent-crime rate per 100,000 are Chester (830.8), Plymouth (834.1), Steelton (838.3), Arnold (839.8). These are same-year agency submissions that pass the same completeness screen, not a claim that the cities have identical conditions. They make the cohort position above checkable against named records instead of a generic state average.
Offense mix
Violent offenses are 24.0% of the 366 Part I offenses reported in Darby for 2024, against a median of 10.0% across comparable Pennsylvania cities — a gap of 14.0 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 58.6% of reported property offenses in Darby, against a cohort median of 85.9%. The remainder is burglary (26) and motor vehicle theft (89). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
Property counts dominate Darby's FBI UCR Table 8 municipal row. Per-100,000 rates use the reporting-year population on that row; cities that fail the completeness test stay out of rate rankings. A citywide figure rarely describes any single neighbourhood inside the municipal boundary.
Mid-size municipal totals above are reported offenses, not safety advice for any single block. Reporting completeness still varies by year and agency.
Darby leans on larceny-theft at 45% of reported offenses, with a moderate mix index of 2,985.
Violent offenses are 24% of the municipal total; property offenses still dominate the count.
Darby offense mix (2024)
Density uses Census Gazetteer land area (when validated); mix index is HHI x 10,000 on the offense-type shares above. Distinct from the per-100K rates in the hero.
| Offense | Count | Rate /100K |
|---|---|---|
| Property Crime | 278 | 2626.1 |
| Larceny-Theft | 163 | 1539.8 |
| Motor Vehicle Theft | 89 | 840.7 |
| Burglary | 26 | 245.6 |
| Arson | 1 | 9.4 |
| Violent Crime | 88 | 831.3 |
| Aggravated Assault | 68 | 642.4 |
| Robbery | 13 | 122.8 |
| Rape | 5 | 47.2 |
| Murder | 2 | 18.9 |
Lead series · rose across 5 comparable years · FBI UCR
Secondary series · fell · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 10,703 | 2008.8 | 2410.5 |
| 2021 | Comparable | 10,705 | 168.1 | 177.5 |
| 2022 | Comparable | 10,581 | 311.9 | 775 |
| 2023 | Comparable | 10,564 | 993.9 | 2641 |
| 2024 | Comparable | 10,586 | 831.3 | 2626.1 |
Darby Police Department filed the 2024 UCR row behind Darby's 366 reported offenses (5-year span 2020-2024).
This agency reports via the traditional Summary Reporting System (SRS): aggregate monthly offense counts rather than incident-level detail.
Crime rates read differently at different scales, so these are the Pennsylvania cities closest to Darby in population. Their populations run from 10,414 to 10,762, against 10,586 here. Or use our side-by-side compare tool to benchmark two cities directly.
Darby sits at 831.3/100K violent (grade F); the Pennsylvania cities below are the nearest matches after size peers are removed.
Darby at 831.3/100K violent and 2,626.1/100K property - matched below outside Pennsylvania (≥10k pop, latest UCR vintage; not the in-state lists above).
831.3/100K here; nearest out-of-state matches.
2,626.1/100K here; violent-rate peers above excluded.
In 2024, Darby reported 88 violent crimes and 278 property crimes, for a total of 366 reported offenses.
From 2023 to 2024, Darby's violent crime rate decreased by 16.4%, and the property crime rate decreased by 0.6%.
The most common crime type in Darby is larceny-theft, accounting for 44.5% of all reported crimes (163 incidents in 2024).
Mid-size read: Darby figures are FBI UCR CIUS Table 8 (vintage 2024), population-adjusted per 100,000.
Denominators are the reporting-year population on the municipal row. Incomplete years are dropped from rankings. Confirm at FBI Crime Data Explorer and Census.gov QuickFacts.
Disclaimer (mid-size municipal): figures are informational, not advice. FBI Uniform Crime Reporting (UCR) Program is the source. Consult a professional before decisions.
Mid-size rate methodology for how Darby's mid-size city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Darby, PA rates use the reporting-year population on the municipal row.
Bulk download: city crime dataset (CSV/JSON)
Put this to use
Put the Darby, PA FBI UCR record to work: compare peers, open the state atlas, or look up another city.
A citywide UCR rate is a starting point, not a neighbourhood verdict: read the full profile and the year coverage notes before drawing conclusions.
Every figure on PlainCrime is rendered directly from FBI Uniform Crime Reporting (UCR) source data, no number is typed in by an editor. Darby is scored in the mid-size municipal band (10,586 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.