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County · code 39093

Lorain CountyOhio

Lorain County is a county in Ohio, with its seat in Elyria, formed December 26, 1822.

  • Founded1822
  • County seatElyria
  • Named forLorraine, France
  • Land area491 sq mi + 432 sq mi water
  • Population312,964 2020 Census
  • Parcels mapped169,011 checked 14 October 2026
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Updated

MedinaErieCuyahogaHuronAshland Elyria Census outline · seat marked

Where it is

Lorain on the map of Ohio

Ohio has 88 counties and county equivalents, each with its own records office. Shapes with a page are links.

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Counties of Ohio · Lorain highlighted

History

Formed in 1822 from Cuyahoga County, Huron County and Medina County

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

Lorain County was created from Cuyahoga, Huron, and Medina counties but was not fully organized at first, with parts attached to those counties for administrative and judicial purposes. It was fully organized on April 1, 1824, and detached from Cuyahoga, Huron, and Medina. The county was named after Lorraine.

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

  1. 1822
    Lorain County created Lorain created from Cuyahoga, Huron, and Medina; Lorain not fully organized, parts attached to Cuyahoga, Huron, and Medina for administrative and judicial purposes.
    from Cuyahogafrom Huronfrom Medina
    · Ohio Laws 1822, 21st assy., loc., ch. 5/p. 5; Chase, 3:ch. 436/pp. 2135-2136
  2. 1824
    Changed Lorain fully organized, detached from Cuyahoga, Huron, and Medina.
    CuyahogaHuronMedina
    · Ohio Laws 1823, 22d assy., loc., ch. 12/p. 12; Chase, 3:ch. 439/pp. 2136-2137
  3. 1827
    Gained territory Lorain gained from Medina, lost to Cuyahoga. Lorain gained non-county area over the waters of Lake Erie as its limits were extended to the northern boundary of Ohio.
    from Medinafrom Cuyahoga
    · Ohio Laws 1826, 25th assy., gen., pp. 99, 111; Chase, 3:chs. 456, 458/pp. 2142-2143
  4. 1835
    Boundary clarified Northern boundary of Lorain was redefined to match the northern limit of Ohio in Lake Erie (no change).
    no change
    · Ohio Laws 1834, 33d assy., loc., secs. 1, 3-5/pp. 92-93
  5. 1840
    Lost territory Lorain lost to Medina.
    to Medina
    · Ohio Laws 1839, 38th assy., loc., p. 88
  6. 1846
    Lost territory Lorain lost to creation of Ashland.
    to Ashland
    · Ohio Laws 1845, 44th assy., loc., secs. 1-2/pp. 172-173

Land and parcels

What the maps cover in Lorain

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

Lorain by the Census

Population
312,964 2020 Census count
Housing units
134,341 2020 Census count
Land area
491 square miles
Water area
432 square miles · 47% of the county, including large bodies of water
People per sq mi
638 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

Lorain County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

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Questions

Common questions about Lorain County

When was Lorain County founded?
Lorain County was founded in 1822, formed from Cuyahoga County, Huron County and Medina County, and named after Lorraine, France.
What is the county seat of Lorain County?
The county seat of Lorain County is Elyria.
Is there an online parcel map for Lorain County?
Yes. Ohio Geographically Referenced Information Program (OGRIP, Ohio DAS) statewide compilation of county auditor parcels publishes a parcel map of 169,011 parcels, rated fallback here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Lorain County's boundary or name changed?
Lorain County was created in 1822 from Cuyahoga County, Huron County and Medina County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Medina County, Cuyahoga County and Ashland County.
Is my lot in a flood zone?
We do not have flood maps for Lorain 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