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County · code 29187

St. Francois CountyMissouri

St. Francois County is a county in Missouri with its seat in Farmington, formed on December 19, 1821.

  • Founded1821
  • County seatFarmington
  • Named forSt. Francis River
  • Land area452 sq mi + 2.8 sq mi water
  • Population66,922 2020 Census
  • Parcels mapped40,661 checked 16 October 2026
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Updated

Ste. GenevieveMadisonIronWashingtonJeffersonPerry Farmington Census outline · seat marked

Where it is

St. Francois 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 · St. Francois highlighted

History

Formed in 1821 from Jefferson County, Ste. Genevieve County and Washington County

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

St. Francois County was created from Jefferson, Ste. Genevieve, and Washington counties and named after the St. Francis River. The county's boundaries changed several times: it gained territory from Washington County in 1833, lost land to Ste. Genevieve County in 1843, and lost land to the new Iron County in 1857 while gaining from Washington County again.

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

  1. 1821
    St. Francois County created St. Francois created from Jefferson, Ste. Genevieve, and Washington.
    from Jeffersonfrom Ste. Genevievefrom Washington
    · Mo. Laws 1821-1822, ch. 26, sec. 1/pp. 28-30
  2. 1833
    Gained territory St. Francois gained from Washington.
    from Washington
    · Mo. Laws 1832-1833, pub., ch. 34, sec. 1/p. 57
  3. 1843
    Lost territory St. Francois lost to Ste. Genevieve.
    to Ste. Genevieve
    · Mo. Laws 1842-1843, pub., p. 45
  4. 1857
    Lost territory St. Francois lost to creation of Iron and gained from Washington.
    to Ironto Washington
    · Mo. Laws 1856-1857, gen., pp. 52-55
  5. 1875
    Changed St. Francois's boundaries defined (no change). · Mo. Laws 1875, gen., pp. 32-33

Land and parcels

What the maps cover in St. Francois

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

St. Francois by the Census

Population
66,922 2020 Census count
Housing units
28,636 2020 Census count
Land area
452 square miles
Water area
2.8 square miles
People per sq mi
148 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

St. Francois 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 St. Francois 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 St. Francois County

When was St. Francois County founded?
St. Francois County was founded in 1821, formed from Jefferson County, Ste. Genevieve County and Washington County, and named after St. Francis River.
What is the county seat of St. Francois County?
The county seat of St. Francois County is Farmington.
Is there an online parcel map for St. Francois County?
Yes. St. Francois County publishes a parcel map of 40,661 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has St. Francois County's boundary or name changed?
St. Francois County was created in 1821 from Jefferson County, Ste. Genevieve County and Washington County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Washington County, Iron County and Ste. Genevieve County.
Is my lot in a flood zone?
We do not have flood maps for St. Francois 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