Data / Rankings / Traffic fatality rate / Counties in Maryland

Counties in Maryland by traffic fatality rate

Kent County had the highest traffic fatality rate of 24 counties in 2021, at 52 per 100,000 people. Carroll County had the lowest, at 4 per 100,000 people. The median was 9.5 per 100,000 people and the figure for Maryland was 9.1 per 100,000 people. Source: NHTSA and BEA.

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Highest52Kent County
Lowest4Carroll County
Median9.524 counties
Maryland9.1History

Map of counties, 2021

Allegany County: 13.3 per 100,000 peopleAnne Arundel County: 6.5 per 100,000 peopleBaltimore County: 9.2 per 100,000 peopleCalvert County: 8.5 per 100,000 peopleCaroline County: 9 per 100,000 peopleCarroll County: 4 per 100,000 peopleCecil County: 15.4 per 100,000 peopleCharles County: 10.7 per 100,000 peopleDorchester County: 6.1 per 100,000 peopleFrederick County: 8.2 per 100,000 peopleGarrett County: 20.9 per 100,000 peopleHarford County: 6.8 per 100,000 peopleHoward County: 9.8 per 100,000 peopleKent County: 52 per 100,000 peopleMontgomery County: 4.1 per 100,000 peoplePrince George's County: 13.6 per 100,000 peopleQueen Anne's County: 7.9 per 100,000 peopleSt. Mary's County: 17.4 per 100,000 peopleSomerset County: 16.3 per 100,000 peopleTalbot County: 13.2 per 100,000 peopleWashington County: 7.7 per 100,000 peopleWicomico County: 14.4 per 100,000 peopleWorcester County: 22.5 per 100,000 peopleBaltimore city: 8.3 per 100,000 people
  • Under 7.4
  • 7.4 to 8.6
  • 8.6 to 13
  • 13 to 16
  • 16 and over
per 100,000 people, 2021. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Kent County: 52 per 100,000 peopleKent County52Worcester County: 22.5 per 100,000 peopleWorcester County22.5Garrett County: 20.9 per 100,000 peopleGarrett County20.9St. Mary's County: 17.4 per 100,000 peopleSt. Mary's County17.4Somerset County: 16.3 per 100,000 peopleSomerset County16.3Cecil County: 15.4 per 100,000 peopleCecil County15.4Wicomico County: 14.4 per 100,000 peopleWicomico County14.4Prince George's County: 13.6 per 100,000 peoplePrince George's County13.6Allegany County: 13.3 per 100,000 peopleAllegany County13.3Talbot County: 13.2 per 100,000 peopleTalbot County13.2Charles County: 10.7 per 100,000 peopleCharles County10.7Howard County: 9.8 per 100,000 peopleHoward County9.8Baltimore County: 9.2 per 100,000 peopleBaltimore County9.2Caroline County: 9 per 100,000 peopleCaroline County9Calvert County: 8.5 per 100,000 peopleCalvert County8.5Baltimore city: 8.3 per 100,000 peopleBaltimore city8.3Frederick County: 8.2 per 100,000 peopleFrederick County8.2Queen Anne's County: 7.9 per 100,000 peopleQueen Anne's County7.9Washington County: 7.7 per 100,000 peopleWashington County7.7Harford County: 6.8 per 100,000 peopleHarford County6.8Anne Arundel County: 6.5 per 100,000 peopleAnne Arundel County6.5Dorchester County: 6.1 per 100,000 peopleDorchester County6.1Montgomery County: 4.1 per 100,000 peopleMontgomery County4.1Carroll County: 4 per 100,000 peopleCarroll County4Kent County: 52 per 100,000 peopleKent County52Worcester County: 22.5 per 100,000 peopleWorcester County22.5Garrett County: 20.9 per 100,000 peopleGarrett County20.9St. Mary's County: 17.4 per 100,000 peopleSt. Mary's County17.4Somerset County: 16.3 per 100,000 peopleSomerset County16.3Cecil County: 15.4 per 100,000 peopleCecil County15.4Wicomico County: 14.4 per 100,000 peopleWicomico County14.4Prince George's County: 13.6 per 100,000 peoplePrince George's County13.6Allegany County: 13.3 per 100,000 peopleAllegany County13.3Talbot County: 13.2 per 100,000 peopleTalbot County13.2Charles County: 10.7 per 100,000 peopleCharles County10.7Howard County: 9.8 per 100,000 peopleHoward County9.8Baltimore County: 9.2 per 100,000 peopleBaltimore County9.2Caroline County: 9 per 100,000 peopleCaroline County9Calvert County: 8.5 per 100,000 peopleCalvert County8.5Baltimore city: 8.3 per 100,000 peopleBaltimore city8.3Frederick County: 8.2 per 100,000 peopleFrederick County8.2Queen Anne's County: 7.9 per 100,000 peopleQueen Anne's County7.9Washington County: 7.7 per 100,000 peopleWashington County7.7Harford County: 6.8 per 100,000 peopleHarford County6.8Anne Arundel County: 6.5 per 100,000 peopleAnne Arundel County6.5Dorchester County: 6.1 per 100,000 peopleDorchester County6.1Montgomery County: 4.1 per 100,000 peopleMontgomery County4.1Carroll County: 4 per 100,000 peopleCarroll County4
per 100,000 people. Source: Invokely calculation with data from NHTSA, BEA. Retrieved 2026-10-12.

Full ranking

RankCounties2021
per 100,000 people		Change on 2020
1Kent County52+20.6 pts
2Worcester County22.5-15.6 pts
3Garrett County20.9-17.3 pts
4St. Mary's County17.4+5.2 pts
5Somerset County16.30 pts
6Cecil County15.4-1 pts
7Wicomico County14.4+3.8 pts
8Prince George's County13.6+2.3 pts
9Allegany County13.3+4.5 pts
10Talbot County13.2+10.6 pts
11Charles County10.7-4.9 pts
12Howard County9.8+1.1 pts
13Baltimore County9.2+1.8 pts
14Caroline County9-6.1 pts
15Calvert County8.5-3.3 pts
16Baltimore city8.3-3.3 pts
17Frederick County8.2-0.2 pts
18Queen Anne's County7.9-4.1 pts
19Washington County7.7+1.3 pts
20Harford County6.8+0.3 pts
21Anne Arundel County6.5-1.9 pts
22Dorchester County6.1-6.2 pts
23Montgomery County4.1-0.3 pts
24Carroll County4-5.2 pts

Other periods

About this ranking

Traffic fatalities (NHTSA FARS) per 100,000 residents in the same year and place.

Deaths are counted where the crash happened and divided by the resident population, so counties with busy highways and few residents can show very high rates. Differs from the WHO road traffic death rate (road_traffic_death_rate).

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Retrieved 2026-10-12.

Citation styles

Invokely calculated this figure from the publishers' data, so Invokely is the author and the publishers of the inputs are named.

APA 7

Invokely. (n.d.). NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents (Counties in Maryland by traffic fatality rate, 2021) [Data set]. Calculated from data by NHTSA and BEA. Retrieved October 12, 2026, from https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k

MLA 9

NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents, Counties in Maryland by traffic fatality rate, 2021. Calculated from data by NHTSA and BEA. Invokely, https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Accessed 12 Oct. 2026.

Chicago (author-date)

Invokely. n.d. NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. Counties in Maryland by traffic fatality rate, 2021. Dataset. Calculated from data by NHTSA and BEA. Accessed October 12, 2026. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k.

Harvard

Invokely (no date) NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents, Counties in Maryland by traffic fatality rate, 2021 [Dataset]. Calculated from data by NHTSA and BEA. Available at: https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k (Accessed: 12 October 2026).

BibTeX
@misc{invokely_counties_in_maryland_by_2021,
  author = {{Invokely}},
  title = {{NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in Maryland by traffic fatality rate, 2021}},
  howpublished = {Data set},
  url = {https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k},
  urldate = {2026-10-12},
  note = {Calculated from data by NHTSA and BEA. Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/maryland-counties?period=2021. Publisher attribution: Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology\#traffic\_fatality\_rate\_per\_100k. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - Invokely
TI  - NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in Maryland by traffic fatality rate, 2021
PB  - Invokely
DB  - Invokely
UR  - https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k
L2  - https://invokely.ai/rankings/traffic-fatality-rate/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Calculated from data by NHTSA and BEA.
N1  - Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/maryland-counties?period=2021.
N1  - Publisher attribution: Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest traffic fatality rate?

Kent County, with 52 per 100,000 people in 2021, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Carroll County, with 4 per 100,000 people in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Invokely, NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. Retrieved 2026-10-12.

Traffic fatality rate: other rankings

Counties in Maryland: more rankings