St. John the Baptist Parish, Louisiana

St. John the Baptist Parish population, land area and income

St. John the Baptist Parish had 39,694 residents in the Census Vintage 2024 estimate, on 214.5 square miles of land. It ranks 27th of 64 in Louisiana by population and 62nd by land area. That works out to 185.1 people per square mile, 1.9 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Louisiana has 31,591 residents; St. John the Baptist Parish is somewhat larger.

Its SAIPE 2023 median household income of $63,183 is above the national county median among 3,143 counties with an estimate.

How St. John the Baptist Parish's population changed since 2020

St. John the Baptist Parish lost 2,665 residents between the July 2020 and July 2024 estimates, a drop of 6.3%. That ranks 58th 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, St. John the Baptist Parish recorded 1,959 births and 1,892 deaths, a natural change of +67. Net international migration added +144 and net domestic migration, people moving to or from other US counties, came to -3,121. The largest single component was domestic migration, which removed 3,121 people.

Where St. John the Baptist Parish is

The Census internal point of St. John the Baptist Parish is at 30.144100, -90.491000. 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 St. John the Baptist Parish outlined. Dots are towns of 1,000+ people with residents in it.

Towns in St. John the Baptist Parish

No incorporated place of 1,000 or more people has residents in St. John the Baptist Parish. Its 39,694 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering St. John the Baptist Parish

The Census 2024 county adjacency file lists 8 neighbors for St. John the Baptist Parish. The most populous is Jefferson Parish, LA, with 427,253 residents. Distances run between Census internal points in a straight line.

• Jefferson Parish

  427,253 people

  52 mi SSE

• St. Tammany Parish

  277,615 people

  37 mi ENE

• Livingston Parish

  152,886 people

  25 mi NW

• Tangipahoa Parish

  139,823 people

  33 mi N

• Ascension Parish

  133,534 people

  26 mi W

• Lafourche Parish

  95,342 people

  45 mi S

• St. Charles Parish

  50,400 people

  18 mi SSE

• St. James Parish

  19,110 people

  20 mi WSW

Distance to Baton Rouge and the nearest big city

Baton Rouge is 46.8 miles WNW of St. John the Baptist Parish's internal point in a straight line. The nearest place of 100,000 or more is New Orleans, LA (population 362,701), 33.9 miles away. The nearest place of 10,000 or more is Kenner, LA (population 64,650), 16.9 miles away.

St. John the Baptist Parish FIPS code

The FIPS code of St. John the Baptist Parish is 22095: state code 22 for Louisiana plus parish code 095. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $63,183.