YOUR COUNTYCOUNTIESSPOTTED LANTERNFLY AT THE LOCAL LEVEL
County-level spotted lanternfly data across Pennsylvania, New Jersey, New York, Maryland, and Virginia. Find confirmed infestation status, hotspot zones, and direct action guides for your county.
Pennsylvania
12 counties tracked
Berks County
Pennsylvania
Confirmed 2014
Bucks County
Pennsylvania
Confirmed 2015
Chester County
Pennsylvania
Confirmed 2018
Montgomery County
Pennsylvania
Confirmed 2018
Delaware County
Pennsylvania
Confirmed 2018
Lancaster County
Pennsylvania
Confirmed 2018
Lehigh County
Pennsylvania
Confirmed 2019
Northampton County
Pennsylvania
Confirmed 2019
York County
Pennsylvania
Confirmed 2019
Cumberland County
Pennsylvania
Confirmed 2019
Dauphin County
Pennsylvania
Confirmed 2019
Adams County
Pennsylvania
Confirmed 2020
New Jersey
9 counties tracked
Middlesex County
New Jersey
Confirmed 2019
Burlington County
New Jersey
Confirmed 2019
Gloucester County
New Jersey
Confirmed 2019
Hunterdon County
New Jersey
Confirmed 2019
Essex County
New Jersey
Confirmed 2019
Morris County
New Jersey
Confirmed 2020
Passaic County
New Jersey
Confirmed 2020
Mercer County
New Jersey
Confirmed 2021
Warren County
New Jersey
Confirmed 2021
New York
7 counties tracked
Westchester County
New York
Confirmed 2020
Orange County
New York
Confirmed 2020
Rockland County
New York
Confirmed 2021
Dutchess County
New York
Confirmed 2021
Ulster County
New York
Confirmed 2021
Suffolk County
New York
Confirmed 2022
Columbia County
New York
Confirmed 2022
Maryland
6 counties tracked
Montgomery County
Maryland
Confirmed 2022
Prince George's County
Maryland
Confirmed 2022
Anne Arundel County
Maryland
Confirmed 2022
Howard County
Maryland
Confirmed 2023
Frederick County
Maryland
Confirmed 2023
Charles County
Maryland
Confirmed 2024
Don't see your county?
More Coverage Coming
We're adding county pages across the SLF range. In the meantime, check our State Pages for statewide data, or Report a Sighting to add your county to the community map.
Status Guide
Heavy Infestation
Long-established populations, high SLF density, significant economic impact.
Moderate to Heavy
Established populations growing toward heavy density levels.
Confirmed — Moderate / Spreading
Confirmed presence, populations establishing and actively spreading.
Watch Zone
Adjacent to confirmed counties — early detection and reporting critical.
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