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County · code 39095

Lucas CountyOhio

Lucas County is located in Ohio and was formed on June 20, 1835, from Henry and Wood counties, with Toledo as its county seat.

  • Founded1835
  • County seatToledo
  • Named forRobert Lucas
  • Land area340 sq mi + 256 sq mi water
  • Population431,279 2020 Census
  • Parcels mapped191,386 checked 16 October 2026
Open the free map Click any parcel in Lucas County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

Monroe, MIWoodOttawaLenawee, MIFulton Toledo Census outline · seat marked

Where it is

Lucas 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 · Lucas highlighted

History

Formed in 1835 from Henry County and Wood County

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

Lucas County was created from Henry and Wood counties and named after Robert Lucas. The county gained additional territory from Wood in 1836, and later gained from Ottawa and lost to the creation of Fulton County in 1850.

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

  1. 1835
    Lucas County created Lucas created from Henry and Wood; Lucas overlapped part of the area disputed with Michigan Territory since 1805 that was actually under Michigan control.
    from Henryfrom Wood
    · Ohio Laws 1835, 33d assy., 2d sess., sec. 1/p. 5
  2. 1836
    Gained territory Lucas gained from Wood.
    from Wood
    · Ohio Laws 1835, 34th assy., loc., p. 470
  3. 1837
    Lucas County created The state of Michigan was created from Michigan Territory. The boundary dispute with Ohio over the strip running from Indiana to Lake Erie was settled in favor of Ohio; confirmed jurisdiction of Lucas over the territory along the Michigan-Ohio line. · U.S. Stat., vol. 5, ch. 99 [1836], secs. 1-2/p. 49; ch. 117 [1836]/pp. 56-57; and ch. 6 [1837]/p.144; Van Zandt, 127
  4. 1840
    Lost territory Lucas lost to creation of Ottawa.
    to Ottawa
    · Ohio Laws 1839, 38th assy., loc., p. 99
  5. 1850
    Gained territory Lucas gained from Ottawa, lost to creation of Fulton.
    from Ottawafrom Fulton
    · Ohio Laws 1849, 48th assy., loc., p. 682

Land and parcels

What the maps cover in Lucas

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

Lucas by the Census

Population
431,279 2020 Census count
Housing units
200,147 2020 Census count
Land area
340 square miles
Water area
256 square miles · 43% of the county, including large bodies of water
People per sq mi
1,270 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.

Inside a city or town, permits usually come from that city rather than the county.

Records

Permits

Zoning and code

County government

See your own lot on these maps

Open Lucas 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 Lucas County

When was Lucas County founded?
Lucas County was founded in 1835, formed from Henry County and Wood County, and named after Robert Lucas.
What is the county seat of Lucas County?
The county seat of Lucas County is Toledo.
Is there an online parcel map for Lucas County?
Yes. Lucas County Auditor (AREIS GIS) with the Lucas County Engineer's Tax Map Department publishes a parcel map of 191,386 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Lucas County's boundary or name changed?
Lucas County was created in 1835 from Henry County and Wood County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Ottawa County, Fulton County and Wood County.
Who issues building permits in Lucas County?
The county's page on building permits: Permits. Inside a city or town, ask that city first.
Who issues septic and well permits in Lucas County?
The county's page on septic systems and wells: Mental Health and Recovery Services Board.
Is my lot in a flood zone?
We do not have flood maps for Lucas 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