St. Tammany Parish LA Information


St. Tammany Parish Subdivisions

St. Tammany Parish LA Data & Demographics (As of July 1, 2017)


Total Population 259,212
Daytime Population: Workers 93,450
Daytime Population: Residents 142,550
Total Daytime Population (TDP) 236,000
Ratio TDP/Total Population1 0.91
Population in Households 256,885
Population in Familes 217,257
Population in Group Qrtrs 2,327
Population Density2 307
Diversity Index3 40


Median Household Income $64,414
Average Household Income $86,953
Per Capita Income $32,693


Total Housing Units 104,491 (100%)
Owner Occupied HU 73,888 (70.7%)
Renter Occupied HU 22,855 (21.9%)
Vacant Housing Units 7,748 ( 7.4%)
Median Home Value $227,039
Average Home Value $263,262


Total Households 96,743
Average Household Size 2.66
Family Households 69,647
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.44% 1.42%
Households 1.39% 1.43%
Families 1.17% 1.29%
Median Household Income   3.01%
Per Capita Income   2.37%


St. Tammany Parish LA - Peer Comparisons by Rank and Percentile

The table below compares St. Tammany Parish to the other 64 parishes and parish equivalents in Louisiana by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 4 95th
Population Density # 6 92nd
Diversity Index # 56 14th
Median Household Income # 2 98th
Per Capita Income # 1 100th

Additional comparisons and rankings can be made with a VERY EASY TO USE Louisiana Census Data Comparison Tool.