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County · code 39111

Monroe CountyOhio

Monroe County is a county in Ohio, on the border with West Virginia, founded in 1813, with its seat at Woodsfield.

  • Founded1813
  • County seatWoodsfield
  • Named forJames Monroe
  • Land area456 sq mi + 1.7 sq mi water
  • Population13,385 2020 Census
  • Parcels mapped17,571 checked 16 October 2026
Open the free map Click any parcel in Monroe County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

BelmontTyler, WVNobleMarshall, WVWetzel, WVWashington Woodsfield Census outline · seat marked

Where it is

Monroe on the map of Ohio

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

Adams CountyAllen CountyAshland CountyAshtabula CountyAthens CountyAuglaize CountyBelmont CountyBrown CountyButler CountyCarroll CountyChampaign CountyClark CountyClermont CountyClinton CountyColumbiana CountyCoshocton CountyCrawford CountyCuyahoga CountyDarke CountyDefiance CountyDelaware CountyErie CountyFairfield CountyFayette CountyFranklin CountyFulton CountyGallia CountyGeauga CountyGreene CountyGuernsey CountyHamilton CountyHancock CountyHardin CountyHarrison CountyHenry CountyHighland CountyHocking CountyHolmes CountyHuron CountyJackson CountyJefferson CountyKnox CountyLake CountyLawrence CountyLicking CountyLogan CountyLorain CountyLucas CountyMadison CountyMahoning CountyMarion CountyMedina CountyMeigs CountyMercer CountyMiami CountyMontgomery CountyMorgan CountyMorrow CountyMuskingum CountyNoble CountyOttawa CountyPaulding CountyPerry CountyPickaway CountyPike CountyPortage CountyPreble CountyPutnam CountyRichland CountyRoss CountySandusky CountyScioto CountySeneca CountyShelby CountyStark CountySummit CountyTrumbull CountyTuscarawas CountyUnion CountyVan Wert CountyVinton CountyWarren CountyWashington CountyWayne CountyWilliams CountyWood CountyWyandot CountyMonroe County Monroe
Counties of Ohio · Monroe highlighted

History

Formed in 1813 from Belmont County, Guernsey County and Washington County

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

Monroe County was created from Belmont, Guernsey, and Washington Counties, though it was not fully organized at first and had parts attached to those counties for administrative and judicial purposes. The county was fully organized and detached from the surrounding counties on March 1, 1815. It gained additional territory from Morgan County in 1819 and from Washington County in 1851, though it also lost territory to the creation of Noble County that same year.

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

  1. 1813
    Monroe County created Monroe created from Belmont, Guernsey, and Washington; Monroe not fully organized, parts attached to Belmont, Guernsey, and Washington for administrative and judicial purposes.
    from Belmontfrom Guernseyfrom Washington
    · Ohio Laws 1812, 11th assy., ch. 25/p. 57; Chase, 3:ch. 396/p. 2117
  2. 1815
    Gained territory Monroe gained from Washington; Monroe fully organized, detached from Belmont, Guernsey, and Washington.
    from Washingtonfrom Belmontfrom Guernsey
    · Ohio Laws 1814, 13th assy., ch. 36, secs. 1, 2, 6/pp. 128-129; Chase, 3:ch. 402/pp. 2120-2121
  3. 1819
    Gained territory Monroe gained from Morgan.
    from Morgan
    · Ohio Laws 1819, 18th assy., loc., ch. 3/p. 4; Chase, 3:ch. 427/p. 2132
  4. 1851
    Gained territory Monroe gained from Washington, lost to creation of Noble.
    from Washingtonfrom Noble
    · Ohio Laws 1850, 49th assy., loc., secs. 1-2, 4, 10/pp. 137-139

Land and parcels

What the maps cover in Monroe

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

Monroe by the Census

Population
13,385 2020 Census count
Housing units
7,133 2020 Census count
Land area
456 square miles
Water area
1.7 square miles
People per sq mi
29 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

GIS and maps

County government

See your own lot on these maps

Open Monroe 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 Monroe County

When was Monroe County founded?
Monroe County was founded in 1813, formed from Belmont County, Guernsey County and Washington County, and named after James Monroe.
What is the county seat of Monroe County?
The county seat of Monroe County is Woodsfield.
Is there an online parcel map for Monroe County?
Yes. A public source publishes a parcel map of 17,571 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Monroe County's boundary or name changed?
Monroe County was created in 1813 from Belmont County, Guernsey County and Washington County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Washington County, Belmont County and Guernsey County.
Who issues septic and well permits in Monroe County?
The county's page on septic systems and wells: Health department: septic and well.
Is my lot in a flood zone?
We do not have flood maps for Monroe 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