Parish · code 22121
West Baton Rouge ParishLouisiana
West Baton Rouge Parish is a parish in Louisiana with a seat at Port Allen. It was created on April 14, 1807 as one of the first nineteen civil parishes in the territory.
- Founded1807
- County seatPort Allen
- Land area192 sq mi + 11 sq mi water
- Population27,199 2020 Census
- Parcels mapped11,684 checked 15 October 2026
Open the free map
Click any parcel in West Baton Rouge Parish: acreage, parcel id, address and who publishes the map. No sign-in.
Where it is
West Baton Rouge on the map of Louisiana
Louisiana has 64 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Founded in 1807
An old deed may name a county that no longer exists, or a boundary that has since moved.
West Baton Rouge Parish was formed in 1807. Port Allen is the county seat.
- 1807West Baton Rouge Parish created Baton Rouge (now West Baton Rouge) Parish created within Pointe Coupee 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
- 1812Renamed By December 1812 Baton Rouge renamed West Baton Rouge though no formal change of name was declared by the Louisiana legislature. West Baton Rouge lost small area (approx. 40 acres) to Pointe Coupee.formerly By December 1812 Baton Rouge· La. Acts 1812-1813, 1st Leg., 2nd sess., p. 4
- 1825Exchanged territory West Baton Rouge exchanged with Pointe Coupee. · La. Acts 1825, 7th Leg., 1st sess., pp. 82-86
- 1826Exchanged territory West Baton Rouge exchanged with Iberville when southern and western boundaries of West Baton Rouge defined. This law is the first concrete definition for the line between the two parishes. Previously mapped line was derived from contemporaneous maps of parish boundaries. · La. Acts 1825, 7th Leg., 2nd sess., pp. 186-188
- 1827Lost territory West Baton Rouge lost to Iberville. · La. Acts 1827, 8th Leg., 1st sess., pp. 178-180
Show all 9 changes
- 1807West Baton Rouge Parish created Baton Rouge (now West Baton Rouge) Parish created within Pointe Coupee 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
- 1812Renamed By December 1812 Baton Rouge renamed West Baton Rouge though no formal change of name was declared by the Louisiana legislature. West Baton Rouge lost small area (approx. 40 acres) to Pointe Coupee.formerly By December 1812 Baton Rouge· La. Acts 1812-1813, 1st Leg., 2nd sess., p. 4
- 1825Exchanged territory West Baton Rouge exchanged with Pointe Coupee. · La. Acts 1825, 7th Leg., 1st sess., pp. 82-86
- 1826Exchanged territory West Baton Rouge exchanged with Iberville when southern and western boundaries of West Baton Rouge defined. This law is the first concrete definition for the line between the two parishes. Previously mapped line was derived from contemporaneous maps of parish boundaries. · La. Acts 1825, 7th Leg., 2nd sess., pp. 186-188
- 1827Lost territory West Baton Rouge lost to Iberville. · La. Acts 1827, 8th Leg., 1st sess., pp. 178-180
- 1828Changed West Baton Rouge / Iberville line defined (no change). · La. Acts 1828, 8th Leg., 2nd sess., p. 92
- 1837Exchanged territory West Baton Rouge exchanged with Pointe Coupee. · La. Acts 1835, 13th Leg., 1st sess., pp. 22-23
- 1838Lost territory West Baton Rouge lost to Pointe Coupee. · La. Acts 1837, 13th Leg., 2nd sess., pp. 21-22
- 1852Exchanged territory West Baton Rouge exchanged with Pointe Coupee. · La. Acts 1852, 4th Leg., pp. 143-144
Land and parcels
What the maps cover in West Baton Rouge
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 11,684 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 11 July 2026 · checked 15 October 2026 -
Address points Missing
No public address points layer found for West Baton Rouge Parish yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- 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
West Baton Rouge by the Census
Population
27,199 2020 Census count
Housing units
11,496 2020 Census count
Land area
192 square miles
Water area
11 square miles
People per sq mi
141 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
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
Inside a city or town, permits usually come from that city rather than the county.
Permits
Zoning and code
County government
- County government
The official website of West Baton Rouge Parish.
See your own lot on these maps
Open West Baton Rouge Parish 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.
Questions
Common questions about West Baton Rouge Parish
- When was West Baton Rouge Parish founded?
- West Baton Rouge Parish was founded in 1807.
- What is the county seat of West Baton Rouge Parish?
- The county seat of West Baton Rouge Parish is Port Allen.
- Is there an online parcel map for West Baton Rouge Parish?
- Yes. A public source publishes a parcel map of 11,684 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has West Baton Rouge Parish's boundary or name changed?
- West Baton Rouge Parish was created in 1807. Since then the Atlas of Historical County Boundaries records 7 later changes, chiefly involving Pointe Coupee Parish, Iberville Parish and Baton Rouge Parish. It was formerly called By December 1812 Baton Rouge.
- Who issues building permits in West Baton Rouge Parish?
- The county's page on building permits: Permits. Inside a city or town, ask that city first.
- Is my lot in a flood zone?
- We do not have flood maps for West Baton Rouge Parish yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby