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County · code 29115

Linn CountyMissouri

Linn County is a county in Missouri, with its seat in Linneus. The county was established on January 6, 1837, and named after Lewis F. Linn.

  • Founded1837
  • County seatLinneus
  • Named forLewis F. Linn
  • Land area616 sq mi + 5.8 sq mi water
  • Population11,874 2020 Census
Open the free map Click any parcel in Linn County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

SullivanCharitonLivingstonGrundyMacon Linneus Census outline · seat marked

Where it is

Linn on the map of Missouri

Missouri has 115 counties and county equivalents, each with its own records office. Shapes with a page are links.

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Counties of Missouri · Linn highlighted

History

Founded in 1837

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

Linn County was created from Non-County Area 6 on January 6, 1837, and soon gained territory from Livingston County. Over the following years, the county lost land to the creation of Highland (later Sullivan) and Putnam counties, and later exchanged territory with Chariton and Livingston counties.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1837
    Linn County created Linn created from Non-County Area 6; Non-County Area 23 created from Non-County Area 6 and attached to Linn "for all civil and military purposes." · Mo. Laws 1836-1837, p. 52
  2. 1837
    Gained territory Linn gained from Livingston and Non-County Area 18. Non-County Area 23, attached to Linn, gained from Non-County Area 18.
    from Livingston
    · Mo. Laws 1836-1837, pub., p. 53
  3. 1843
    Lost territory Linn lost part of attached Non-County Area 23 to creation of Highland (now Sullivan); Highland not fully organized, attached to Linn "for all civil and military purposes."
    to Highlandto Sullivan
    · Mo. Laws 1842-1843, pub., pp. 37-38
  4. 1843
    Lost territory Linn lost part of attached Non-County Area 23 to creation of Putnam.
    to Putnam
    · Mo. Laws 1842–1843, pub., pp. 44–45
  5. 1845
    Gained territory Linn gained from Chariton.
    from Chariton
    · Mo. Laws 1844-1845, loc. and priv., p. 49
Show all 8 changes (3 more)
  1. 1837
    Linn County created Linn created from Non-County Area 6; Non-County Area 23 created from Non-County Area 6 and attached to Linn "for all civil and military purposes." · Mo. Laws 1836-1837, p. 52
  2. 1837
    Gained territory Linn gained from Livingston and Non-County Area 18. Non-County Area 23, attached to Linn, gained from Non-County Area 18.
    from Livingston
    · Mo. Laws 1836-1837, pub., p. 53
  3. 1843
    Lost territory Linn lost part of attached Non-County Area 23 to creation of Highland (now Sullivan); Highland not fully organized, attached to Linn "for all civil and military purposes."
    to Highlandto Sullivan
    · Mo. Laws 1842-1843, pub., pp. 37-38
  4. 1843
    Lost territory Linn lost part of attached Non-County Area 23 to creation of Putnam.
    to Putnam
    · Mo. Laws 1842–1843, pub., pp. 44–45
  5. 1845
    Changed Sullivan fully organized, detached from Linn.
    Sullivan
    · Mo. Laws 1844-1845, secs. 19, 43/pp. 33, 36
  6. 1845
    Changed Non-County Area 23 detached from Linn, attached to Sullivan "for civil and military purposes."
    Sullivan
    · Mo. Laws 1844-1845, loc. and priv., p. 47
  7. 1845
    Gained territory Linn gained from Chariton.
    from Chariton
    · Mo. Laws 1844-1845, loc. and priv., p. 49
  8. 1855
    Lost territory Linn lost to Livingston.
    to Livingston
    · Mo. Laws 1854-1855, pub., p. 17

Land and parcels

What the maps cover in Linn

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

Linn by the Census

Population
11,874 2020 Census count
Housing units
5,999 2020 Census count
Land area
616 square miles
Water area
5.8 square miles
People per sq mi
19 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

Linn 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

Open Linn 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 Linn County

When was Linn County founded?
Linn County was founded in 1837, and named after Lewis F. Linn.
What is the county seat of Linn County?
The county seat of Linn County is Linneus.
Is there an online parcel map for Linn County?
Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
Has Linn County's boundary or name changed?
Linn County was created in 1837. Since then the Atlas of Historical County Boundaries records 7 later changes, chiefly involving Sullivan County, Livingston County and Chariton County.
Is my lot in a flood zone?
We do not have flood maps for Linn 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