LA · GEOID 22121

West Baton Rouge Parish area

West Baton Rouge Parish, Louisiana covers 203.8 square miles: 192.3 square miles of land and 11.4 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area192.3 mi²
Water area11.4 mi²
Total area203.8 mi²
National land rank#3009

County outline

Generalized outline of West Baton Rouge Parish, Louisiana
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where West Baton Rouge Parish is located

West Baton Rouge Parish highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 94.4% of West Baton Rouge Parish’s measured area and water for 5.6%. Its combined area converts to 527.8 square kilometers or approximately 130,417 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land192.346498.174123,101.4
Water11.4329.6047,315.2
Total203.776527.777130,416.6

How West Baton Rouge Parish compares

By original Census land area, West Baton Rouge Parish ranks #63 of 64 in Louisiana and #3009 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.298 times the Louisiana county-equivalent median of 645.9 square miles. It accounts for 0.4% of the combined county land area in the state.

See the complete Louisiana ranking · What counts as a county equivalent?

What stands out about West Baton Rouge Parish?

West Baton Rouge Parish has more land than 213 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
West Baton Rouge Parish192.3 mi²
Louisiana median645.9 mi²
National median604.5 mi²

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places West Baton Rouge Parish at #3,016 nationally by total area, 7 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 5.6%, compared with a national county-equivalent median of 1.2% — 4.4 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside West Baton Rouge Parish in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#3008Taliaferro County, Georgia194.6Compare
#3009West Baton Rouge Parish, Louisiana192.3This county
#3010New Hanover County, North Carolina192.3Compare

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.

Representative coordinates

The Census internal point is 30.465255, -91.310224. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.

Source and precision

U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 498,174,685 m²; AWATER: 29,604,696 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How many acres of land are in West Baton Rouge Parish?

The land measurement converts to approximately 123,101 acres. Including water, total area is approximately 130,417 acres. One square mile equals 640 acres.

Why might another source show a different area?

Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.

Can this establish a property boundary?

No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.

Cite this county

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