Maryland EV registrations are 37,432 as of the end of August, 2021, according to data from MDOT / Maryland Motor Vehicle Administration.
About 12,763 of those electric vehicles are registered in Montgomery County. As the most populated county in Maryland, with more than one million residents, it makes sense that Montgomery has the greatest total number of plug-in vehicles. In May, 2020, PlugInSites compared Maryland Plug-In Vehicle Adoption by County using the number of plug-in vehicles registered per 100,000 residents.
Perhaps a more useful metric is what percentage of all vehicles registered in each county is electric? The results show a wide gulf between the suburban counties in the center of the state and the more rural areas of Maryland.
Montgomery and Howard Have the Highest Percentage of EVs
There were about 5 million vehicles registered in Maryland as of June 30, 2021 according to MVA. About 794,713 are registered in Montgomery County. About 8,140 of the vehicles in the County are Battery Electric and 4,623 are Plug-In Hybrids for a total of 12,763 plug in vehicles. That means 1.61% of all vehicles registered in Montgomery County are plug-ins. Howard County has the 2nd highest percentage of plug-in vehicles at 1.52%. Montgomery and Howard are way out in front of the rest of the Maryland for percentage of EVs.
Frederick, Anne Arundel and Baltimore City are next in the rankings with between 0.76% and 0.70% of all registered vehicles being electric. Frederick, Anne Arundel and Baltimore City’s percentage of EVs is very close to the state of Maryland at large which is 0.74%.
Saint Mary’s, Harford, and Charles Counties have are around 0.38% of their vehicles being plug-ins. These counties fall around the middle of the list.
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