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County · code 42049

Erie CountyPennsylvania

Erie County is a county in northwestern Pennsylvania, with its seat in Erie. It was created on March 12, 1800, and named after Lake Erie.

  • Founded1800
  • County seatErie
  • Named forLake Erie, North America
  • Land area799 sq mi + 759 sq mi water
  • Population270,876 2020 Census
  • Parcels mapped112,708 checked 16 October 2026
Open the free map Click any parcel in Erie County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

Crawford Erie Census outline · seat marked

Where it is

Erie on the map of Pennsylvania

Pennsylvania has 67 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAllegheny CountyArmstrong CountyBeaver CountyBedford CountyBerks CountyBlair CountyBradford CountyBucks CountyButler CountyCambria CountyCameron CountyCarbon CountyCentre CountyChester CountyClarion CountyClearfield CountyClinton CountyColumbia CountyCrawford CountyCumberland CountyDauphin CountyDelaware CountyElk CountyFayette CountyForest CountyFranklin CountyFulton CountyGreene CountyHuntingdon CountyIndiana CountyJefferson CountyJuniata CountyLackawanna CountyLancaster CountyLawrence CountyLebanon CountyLehigh CountyLuzerne CountyLycoming CountyMcKean CountyMercer CountyMifflin CountyMonroe CountyMontgomery CountyMontour CountyNorthampton CountyNorthumberland CountyPerry CountyPhiladelphia CountyPike CountyPotter CountySchuylkill CountySnyder CountySomerset CountySullivan CountySusquehanna CountyTioga CountyUnion CountyVenango CountyWarren CountyWashington CountyWayne CountyWestmoreland CountyWyoming CountyYork CountyErie County Erie
Counties of Pennsylvania · Erie highlighted

History

Formed in 1800 from Allegheny County and Crawford County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Erie County was created from Allegheny County on March 12, 1800, but was not fully organized and remained attached to Crawford County. The county was fully organized and detached from Crawford County on November 7, 1803.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1800
    Erie County created Erie created from Allegheny; not fully organized, attached to Crawford.
    from Alleghenyfrom Crawford
    · Pa. Stat., ch. 2130, pp. 457, 460-461
  2. 1803
    Changed Erie fully organized, detached from Crawford.
    Crawford
    · Pa. Stat., ch. 2391, sec. 1/17:480

Land and parcels

What the maps cover in Erie

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Erie by the Census

Population
270,876 2020 Census count
Housing units
119,791 2020 Census count
Land area
799 square miles
Water area
759 square miles · 49% of the county, including large bodies of water
People per sq mi
339 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Records

GIS and maps

County government

See your own lot on these maps

Open Erie County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Erie County

When was Erie County founded?
Erie County was founded in 1800, formed from Allegheny County and Crawford County, and named after Lake Erie, North America.
What is the county seat of Erie County?
The county seat of Erie County is Erie.
Is there an online parcel map for Erie County?
Yes. A public source publishes a parcel map of 112,708 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Erie County's boundary or name changed?
Erie County was created in 1800 from Allegheny County and Crawford County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Crawford County.
Is my lot in a flood zone?
We do not have flood maps for Erie County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door