Washington Parish, Louisiana

Washington Parish population, land area and income

Washington Parish had 45,090 residents in the Census Vintage 2024 estimate, on 669.6 square miles of land. It ranks 25th of 64 in Louisiana by population and 28th by land area. That works out to 67.3 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Louisiana has 31,591 residents; Washington Parish is somewhat larger.

Its SAIPE 2023 median household income of $45,073 is in the bottom quarter among 3,143 counties with an estimate.

How Washington Parish's population changed since 2020

Washington Parish lost 264 residents between the July 2020 and July 2024 estimates, a drop of 0.6%. That ranks 15th of 64 in Louisiana for growth. The median Louisiana county changed by -2.3%, and the state as a whole by -1.2%.

Since the April 2020 estimates base, Washington Parish recorded 2,464 births and 3,029 deaths, a natural change of -565. Net international migration added +106 and net domestic migration, people moving to or from other US counties, came to +91. The largest single component was natural change, which removed 565 people.

Where Washington Parish is

The Census internal point of Washington Parish is at 30.852100, -90.046300. It sits in UTM zone 15N. The map shades Louisiana's 64 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Washington Parish outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Washington Parish

2 incorporated places of 1,000+ people have residents in Washington Parish, 13,959 people together, or 31% of the county. Each figure counts only the part of the town inside Washington Parish; towns marked "part" extend into another county. The largest is Bogalusa with 10,367.

Counties bordering Washington Parish

The Census 2024 county adjacency file lists 6 neighbors for Washington Parish, including 4 across a state line. The most populous is St. Tammany Parish, LA, with 277,615 residents. Distances run between Census internal points in a straight line.

• St. Tammany Parish

  277,615 people

  31 mi S

• Tangipahoa Parish

  139,823 people

  27 mi SW

• MS

  Pearl River County, MS

  59,030 people

  28 mi E

• MS

  Pike County, MS

  38,980 people

  31 mi NW

• MS

  Marion County, MS

  24,008 people

  29 mi NNE

• MS

  Walthall County, MS

  13,839 people

  22 mi N

Distance to Baton Rouge and the nearest big city

Baton Rouge is 73.1 miles WSW of Washington Parish's internal point in a straight line. The nearest place of 100,000 or more is New Orleans, LA (population 362,701), 55.6 miles away. The nearest place of 10,000 or more is Bogalusa, LA (population 10,367), 12.2 miles away.

Washington Parish FIPS code

The FIPS code of Washington Parish is 22117: state code 22 for Louisiana plus parish code 117. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $45,073.