Spotted Lanternfly inYork, PASPOTTED LANTERNFLY GUIDE
York County confirmed SLF in 2019, relatively early in the Pennsylvania expansion. York's manufacturing and industrial districts have Tree of Heaven established along rail lines — a classic pattern enabling rapid SLF dispersal. The Codorus Creek greenway and Susquehanna River corridor provide natural TOH habitat running through the city. As a central PA freight hub, York is a key node in SLF's westward spread through Pennsylvania.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Codorus State Park
Active zone
Susquehanna Trail corridor
Active zone
York City waterfront
Active zone
Hanover Pike commercial corridor
Active zone
Primary SLF food source
Tree of Heaven in York, PA
York's freight rail lines and industrial corridor have substantial Tree of Heaven populations that act as SLF stepping stones westward through south-central Pennsylvania. Codorus Creek and its greenway provide a natural TOH corridor running through the urban core. The Susquehanna River corridor — accessible via the Susquehanna Trail — connects York's SLF populations to the broader river system and accelerates regional spread.
Identify Tree of Heaven →Local action resources
What To Do in York, PA
Report a Sighting
Every sighting in York, PA maps the invasion front. Report directly to PA Department of Agriculture.
Report Now →Squish on Sight
See a spotted lanternfly? Kill it immediately — it is legal and encouraged in all states. Learn the best kill methods.
Full Fight Guide →Map ToH in Your Block
Tree of Heaven removal cuts off SLF food supply. Add ToH sightings to the community map to guide removal efforts.
View Sighting Map →Statewide resources
Full PA State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full PA guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in York, PA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in York, PA.
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