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Parish · code 22089

St. Charles ParishLouisiana

St. Charles Parish is a parish in Louisiana with its seat in Hahnville.

  • Founded1807
  • County seatHahnville
  • Named forCharles Borromeo
  • Land area278 sq mi + 119 sq mi water
  • Population52,549 2020 Census
  • Parcels mapped39,245 checked 15 October 2026
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Updated

St. John the BaptistJeffersonLafourche Hahnville Census outline · seat marked

Where it is

St. Charles on the map of Louisiana

Louisiana has 64 counties and county equivalents, each with its own records office. Shapes with a page are links.

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Counties of Louisiana · St. Charles highlighted

History

Founded in 1807

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

St. Charles Parish was created on April 14, 1807, as one of nineteen civil parishes that reused earlier ecclesiastical boundaries within German Coast County. The parish is named after Charles Borromeo. St. Charles gained territory from Jefferson Parish in 1952 and 1954, including parts of lakes and Couba Island.

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

  1. 1807
    St. Charles Parish created St. Charles Parish created within German Coast County. The nineteen parishes created on 14 April 1807 were civil divisions which reused the earlier ecclesiastical boundaries and names. The division into civil parishes did not abolish the twelve counties established on 10 April 1805. This and subsequent laws set up a dual system in which the counties existed "for the purpose of making the election of the representatives of the territory, and levying the territorial taxes", while the parishes took over jurisdiction of all civil, criminal, probate and other judicial matters. The dual county / parish system remained in effect until the state constitution of 1845. Though there was no legislative act formally abolishing the old counties, the 1845 constitution dropped all reference to the county as a civil or legislative division and redefined the limits of parish autonomy and authority. · Orleans Terr. Acts 1807, 1st. Leg., 2nd sess., ch. 1, sec. 9/ p. 12; Calhoun, 85-93
  2. c. 1952
    Gained territory St. Charles gained parts of Lake Cataouatche and Lake Salvador. Vague descriptions given in acts creating and changing Jefferson resulted in multiple interpretations of the Jefferson boundary as it ran around, or through Lake Cataouatche, Lake Salvador, and Caminada Bay. Court actions in the 1940s settled parts of this boundary, and by 1952 U.S.G.S. maps showed the Jefferson boundary running to the west of Couba Island between Lake Cataouatche and Lake Salvador.
    from Jeffersonfrom U.s.g.s
    · La. Rpts. 206, pp. 616-642; Swanson, 47-48; U.S.G.S. Louisiana 7.5 Minute Series, 1944, 1952
  3. c. 1954
    Gained territory St. Charles gained Couba Island and parts of Lake Cataouatche and Lake Salvador from Jefferson.
    from Jefferson
    · U.S.G.S. Louisiana 7.5 Minute Series, 1954, 1966
  4. 1979
    Gained territory St. Charles gained when boundaries through Lake Pontchartrain were defined. · La. Acts 1979, vol. 2, reg. sess., pp. 2042, 2053-2054

Land and parcels

What the maps cover in St. Charles

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. Charles by the Census

Population
52,549 2020 Census count
Housing units
20,445 2020 Census count
Land area
278 square miles
Water area
119 square miles · 30% of the county, including large bodies of water
People per sq mi
189 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. Charles Parish'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 St. Charles Parish

When was St. Charles Parish founded?
St. Charles Parish was founded in 1807, and named after Charles Borromeo.
What is the county seat of St. Charles Parish?
The county seat of St. Charles Parish is Hahnville.
Is there an online parcel map for St. Charles Parish?
Yes. A public source publishes a parcel map of 39,245 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has St. Charles Parish's boundary or name changed?
St. Charles Parish was created in 1807. Since then the Atlas of Historical County Boundaries records 3 later changes, most of them small boundary adjustments, chiefly involving Jefferson Parish and U.s.g.s Parish.
Is my lot in a flood zone?
We do not have flood maps for St. Charles Parish 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