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County · code 29073

Gasconade CountyMissouri

Gasconade County is a county in Missouri, with its seat in Hermann, formed in 1821.

  • Founded1821
  • County seatHermann
  • Named forGasconade River
  • Land area519 sq mi + 7 sq mi water
  • Population14,794 2020 Census
  • Parcels mapped15,028 checked 14 October 2026
Open the free map Click any parcel in Gasconade County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

OsageFranklinWarrenMariesMontgomeryCrawford Hermann Census outline · seat marked

Where it is

Gasconade 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 · Gasconade highlighted

History

Formed in 1821 from Franklin County

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

Gasconade County was created from Franklin County in 1821. The county is named after the Gasconade River. Over its early years, the county's boundaries shifted as Non-County Area 8 was attached and detached, eventually lost to the creation of Crawford County in 1829 and the creation of Osage County in 1841.

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

  1. 1821
    Gasconade County created Gasconade created from Franklin; Non-County Area 8 attached to Gasconade "for all civil, military, and judicial purposes."
    from Franklin
    · Mo. Laws 1820-1821, ch. 28, secs. 1-2, 5/pp. 51-52
  2. 1825
    Gained territory Gasconade gained from Non-County Area 8. · Mo. Laws 1824-1825, pub., ch. 11, sec. 1/pp. 13-15
  3. 1825
    Gained territory Non-County Area 8 gained from Lillard (extinct), Washington, and Non-County Area 1. Non-County Area 8 attached to Gasconade "for all purposes, civil and military."
    from Lillardfrom Washington
    · Mo. Laws Rev., 1825, ch. 1, sec. 24/p. 240
  4. 1829
    Lost territory Gasconade lost attached Non-County Area 8 to creation of Crawford; Non-County Area 8 eliminated.
    to Crawford
    · Mo. Laws 1828-1829, ch. 19, sec. 1/p. 23
  5. 1841
    Lost territory Gasconade lost to creation of Osage.
    to Osage
    · Mo. Laws 1840-1841, pub., sec. 40/p. 37
  6. 1869
    Lost territory Gasconade lost to Crawford.
    to Crawford
    · Mo. Laws 1869, gen., pp. 9-10

Land and parcels

What the maps cover in Gasconade

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

Gasconade by the Census

Population
14,794 2020 Census count
Housing units
7,577 2020 Census count
Land area
519 square miles
Water area
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

Gasconade 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 Gasconade 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 Gasconade County

When was Gasconade County founded?
Gasconade County was founded in 1821, formed from Franklin County, and named after Gasconade River.
What is the county seat of Gasconade County?
The county seat of Gasconade County is Hermann.
Is there an online parcel map for Gasconade County?
Yes. Gasconade County publishes a parcel map of 15,028 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Gasconade County's boundary or name changed?
Gasconade County was created in 1821 from Franklin County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Crawford County, Lillard County and Osage County.
Is my lot in a flood zone?
We do not have flood maps for Gasconade 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