230
Deaths of county residents, CDC WONDER, 2018-2024
County evidence
Chester County, Pennsylvania
County identity and carefully framed public-data context.
2024 ACS population547,840
Coverage levelT1
Data through2025
UpdatedAug. 2, 2026
Technical build details
cube cube-20260802-3f91ff852ded · registry countycase-metric-registry-1.4.0
Residence and crash location
225
Deaths from crashes in this county, FARS, 2018-2024
-5
Crash-location fatalities minus resident deaths, 2018-2024
location minus resident A signed difference between the two source counts.
Keep in view: This difference is not a count of people traveling into or out of the county and does not identify where county residents crashed.
Reported crash flags
7.4%
Share of PennDOT reported crashes flagged drinking driver, 2016-2025
near near the state share
3.0%
Share of PennDOT reported crashes flagged drugged driver, 2016-2025
near near the state share
12.3%
Share of PennDOT reported crashes flagged distracted, 2016-2025
above above the state share
60.7%
Share of PennDOT reported crashes flagged aggressive driving, 2016-2025
near near the state share
24.5%
Share of PennDOT reported crashes flagged speeding related, 2016-2025
near near the state share
17.8%
Share of PennDOT reported crashes flagged mature driver, 2016-2025
near near the state share
21.6%
Share of PennDOT reported crashes flagged young driver, 2016-2025
above above the state share
5.3%
Share of PennDOT reported crashes flagged deer related, 2016-2025
near broadly near the state share
95% range: 5.1%–5.5%1.1%
Share of PennDOT reported crashes flagged work zone, 2016-2025
below somewhat below the state share
95% range: 1.0%–1.2%0.2%
Share of PennDOT reported crashes flagged school zone, 2016-2025
below somewhat below the state share
95% range: 0.2%–0.3%Keep in view: These reported-crash flags can overlap and do not measure how often individual drivers engage in a behavior or establish why a crash happened.
Crash severity
6.9
Share of reported crashes that were fatal: 6.9 per 1,000, 2016-2025
below somewhat below the state rate
95% range: 6.1–7.78.2%
Suspected-serious share of the source-defined reported-crash injury universe, 2016-2025
near near the state share
Keep in view: The share of reported crashes that were fatal does not measure a county's danger, a traveler's risk, or the cause of any crash.
Fatal-crash timing
32.0%
Share of FARS fatal crashes that were night, 2015-2024
near broadly near the state share
95% range: 27.0%–37.5%31.4%
Share of FARS fatal crashes that were weekend, 2015-2024
near broadly near the state share
95% range: 26.4%–36.8%31.0%
Share of FARS fatal crashes that were impaired involved, 2015-2024
above somewhat above the state share
95% range: 26.1%–36.4%Keep in view: These time and involvement shares describe fatal crashes in FARS and do not measure an individual's risk or establish why a crash occurred.
Population context
80.1
Annual reported crashes per 10,000 residents (2024 ACS population), 2025
near near the state rate
77.9
Five-year annualized reported crashes per 10,000 residents (2024 ACS population), 2021-2025
below somewhat below the state rate
95% range: 76.9–79.0Keep in view: Crashes per resident use population as context, not miles traveled, and do not measure an individual resident's driving risk.
Truck-crash context
0.88
Truck-crash share relative to overall reported-crash share, 2015-2023
below somewhat below the state level
95% range: 0.84–0.92Keep in view: This location quotient compares shares of reported crashes and does not measure truck-driver fault, carrier safety, or roadway danger.
Long-run trajectory
4,386
Annual Reportable Crashes, 2025
94.9
Annual Crash Index (2006=100), 2025
near near the state index
75.6
Crash Index (2006=100), 2020
below somewhat below the state index
95% range: 72.3–79.092.4
Mean Recovery Index, 2021-2025
near broadly near the state index
95% range: 89.5–95.44.5
Mean Absolute County-State Index Gap, 2006-2025
well below well below the state level
Keep in view: An indexed trajectory compares reported-crash counts with a county's own 2006 base and does not measure safety, danger, or individual risk.
Source notices
- Source: CDC/NCHS, National Vital Statistics System, Underlying Cause of Death on CDC WONDER.
- Retain the query edition and CDC WONDER data-use conditions
- CountyCase CC BY does not convey or replace WONDER obligations; downstream users remain independently bound
- Source: National Highway Traffic Safety Administration, Fatality Analysis Reporting System (Final files).
- Final-release and source-universe notice
- Source: Pennsylvania Department of Transportation, public crash open-data files.
- Aggregate-only use; no source-record redistribution
- Source: U.S. Census Bureau, 2024 American Community Survey 5-year estimates.
- This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
- Source: Federal Motor Carrier Safety Administration, MCMIS Crash File, U.S. DOT Data Portal.
- Matured years and deduplicated crash-event notice