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County · code 29111

Lewis CountyMissouri

Lewis County is a county in Missouri with its seat at Monticello. It was created on January 2, 1833, and named after Meriwether Lewis.

  • Founded1833
  • County seatMonticello
  • Named forMeriwether Lewis
  • Land area505 sq mi + 5.8 sq mi water
  • Population10,032 2020 Census
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Updated

MarionClarkKnoxAdams, ILHancock, IL Monticello Census outline · seat marked

Where it is

Lewis 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 · Lewis highlighted

History

Founded in 1833

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

Lewis County was created from Non-County Area 10 in 1833, with Non-County Area 19 attached to it for all civil, judicial, and military purposes. Between 1836 and 1841, the county lost territory as Clark County, Macon County, and Scotland County were created from its attached non-county areas. In 1841, Lewis County lost the remaining Non-County Area 19 to the creation of Scotland County.

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

  1. 1833
    Lewis County created Lewis created from Non-County Area 10; Non-County Area 19 created from Non-County Area 10 and attached to Lewis "for all civil, judicial, and military purposes." · Mo. Laws 1832-1833, pub., ch. 28, secs. 1, 6/pp. 51-52
  2. 1836
    Lost territory Lewis lost part of attached Non-County Area 19 to creation of Clark.
    to Clark
    · Mo. Laws 1836-1837, pub., pp. 47-48
  3. 1837
    Lost territory Lewis lost part of attached Non-County Area 19 to creation of Macon and Non-County Area 24.
    to Macon
    · Mo. Laws 1836-1837, pub., p. 51
  4. 1837
    Lost territory Lewis lost parts of attached Non-County Area 19 to creation of Non-County Area 26 and Non-County Area 27. · Mo. Laws 1836-1837, pub., pp. 48-49
  5. 1841
    Lost territory Lewis lost attached Non-County Area 19 to creation of Scotland; Non-County Area 19 eliminated.
    to Scotland
    · Mo. Laws 1840-1841, pub., sec. 32/p. 36

Land and parcels

What the maps cover in Lewis

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

Lewis by the Census

Population
10,032 2020 Census count
Housing units
4,312 2020 Census count
Land area
505 square miles
Water area
5.8 square miles
People per sq mi
20 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

Lewis 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 Lewis County

When was Lewis County founded?
Lewis County was founded in 1833, and named after Meriwether Lewis.
What is the county seat of Lewis County?
The county seat of Lewis County is Monticello.
Is there an online parcel map for Lewis 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 Lewis County's boundary or name changed?
Lewis County was created in 1833. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Clark County, Macon County and Scotland County.
Is my lot in a flood zone?
We do not have flood maps for Lewis 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