St. Tammany Parish, Louisiana Population 2024

277,929

St. Tammany Parish, Louisiana's estimated 2024 population is 277,929 with a growth rate of 0.85% in the past year according to the most recent United States census data. St. Tammany Parish, Louisiana is the 4th largest county in Louisiana. The 2010 population was 234,564 and has seen a growth of 18.49% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029289,6592,3460.82%
2028287,3132,3460.82%
2027284,9672,3460.83%
2026282,6212,3460.84%
2025280,2752,3460.84%
2024277,9292,3460.85%
2023275,5832,3460.86%
2022273,2373,0901.14%
2021270,1475,1471.94%
2020265,0003,6971.41%
2019261,3032,7051.05%
2018258,5982,3860.93%
2017256,2123,5361.4%
2016252,6763,5601.43%
2015249,1163,7261.52%
2014245,3903,3161.37%
2013242,0742,9201.22%
2012239,1542,2540.95%
2011236,9002,3361%
2010234,56400%
1990144,50833,63930.34%
1980110,86947,28474.36%
197063,58524,94264.54%
196038,64311,65543.19%
195026,9883,36414.24%
194023,6242,69512.88%
193020,9292841.38%
192020,6451,7289.13%
191018,9175,58241.86%
190013,3353,17531.25%
189010,1603,27347.52%
18806,8871,30123.29%
18705,5861803.33%
18605,406-958-15.05%
18506,3641,76638.41%
18404,5981,73460.54%
18302,8641,14166.22%
18201,723-287,936-99.41%
showing: 38 rows
2024 Growth Rate
0.85% (2,346)
County Website
St. Tammany Parish
2020 Population
265,000
Area
845 mi²
Density
329 people/mi²
Growth Since 2020
4.88% (12,929)
Founded
October 27, 1810

St. Tammany Parish, Louisiana Population 2024

Population by Race

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Race
Population
Percentage (of total)
White207,32277.89%
Black or African American32,36212.16%
Two or more races16,6196.24%
Asian3,8211.44%
Other race3,3021.24%
Native American2,0530.77%
Native Hawaiian or Pacific Islander6890.26%

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

St. Tammany Parish, Louisiana Population by Race

St. Tammany Parish, Louisiana Population Pyramid 2024

St. Tammany Parish, Louisiana Median Age

40.6

Total

39.4

Male

41.7

Female

St. Tammany Parish, Louisiana Adults

There are 203,440 adults, (47,243 of whom are seniors) in St. Tammany Parish, Louisiana.

St. Tammany Parish, Louisiana Age Dependency

70.4

Age Dependency Ratio

30.2

Old Age Dependency Ratio

40.2

Child Dependency Ratio

St. Tammany Parish, Louisiana Sex Ratio

Female135,68250.98%
Male130,48649.02%

St. Tammany Parish, Louisiana Population by Age

St. Tammany Parish, Louisiana Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All101,2122.6179.120.9
Married52,9933.1689.810.2
Non Family29,9491.2167.432.6
Female13,2403.3364.935.1
Male5,0303.1973.626.4

3.12

Average Family Size

2.61

Average Household Size

79.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

St. Tammany Parish, Louisiana Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade5,5503.04%
9th to 12th Grade10,4375.71%
High School Graduate43,79423.96%
Some College42,75523.39%
Associates Degree13,7447.52%
Bachelors Degree42,98423.52%
Graduate Degree23,52912.87%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

St. Tammany Parish, Louisiana Educational Attainment by Sex (over 25)

St. Tammany Parish, Louisiana Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White143,882133,85456,505
Black19,90416,9624,645
Hispanic9,7797,7652,537
2+ Races9,1407,8862,546
Asian2,8552,206998
Other Race1,9201,696509
Native American1,268904112
Islander432396107

The highest rate of high school graduation is among white people with a rate of 93.03%.

The highest rate of bachelors degrees is among white people with a rate of 39.27%.

St. Tammany Parish, Louisiana Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$50,349$61,953$40,382
Less Than 9th Grade$30,499$35,115$21,624
High School Graduate$34,432$46,240$25,452
Some College$46,204$59,696$38,258
Bachelors Degree$61,354$85,063$49,765
Graduate Degree$77,864$109,730$58,374

$50,349

Average Earnings

$61,953

Average Male

$40,382

Average Female

St. Tammany Parish, Louisiana Earnings by Educational Attainment

St. Tammany Parish, Louisiana Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

St. Tammany Parish, Louisiana Language

93.64% of St. Tammany Parish, Louisiana residents speak only English, while 6.36% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.6% of the population.

St. Tammany Parish, Louisiana Language

St. Tammany Parish, Louisiana Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White200,04218,7009.35%
Black31,7045,88318.56%
Multiple16,2553,62922.33%
Hispanic15,9703,50821.97%
Native2,01458529.05%
Other3,29657617.48%
Asian3,8082947.72%
Islander68924735.85%

11.66%

Overall Poverty Rate

10.23%

Male Poverty Rate

13.02%

Female Poverty Rate

Poverty in St. Tammany Parish, Louisiana

The race most likely to be in poverty in St. Tammany Parish, Louisiana is Islander, with 35.85% below the poverty level.

The race least likely to be in poverty in St. Tammany Parish, Louisiana is Asian, with 7.72% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.63%. Among those working part-time, it was 12.24%, and for those that did not work, the poverty rate was 18.63%.

St. Tammany Parish, Louisiana Poverty

rate

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Rate
Poverty
Less Than 9th Grade26.45%
High School13.21%
Some College9.18%
Bachelors or Greater3.96%

St. Tammany Parish, Louisiana Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed33.63%
Male Unemployed28.17%
Female Employed6.7%
Male Employed3.35%

St. Tammany Parish, Louisiana Poverty Rate by Employment Status and Sex

St. Tammany Parish, Louisiana Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Households$76,914$103,990
Families$92,115$120,707
Married Families$108,189$139,930
Non Families$43,355$58,684

mean

median

Income by Household Type

St. Tammany Parish, Louisiana Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.5%

Overall Marriage Rate

55.2%

Male Marriage Rate

49.9%

Female Marriage Rate

St. Tammany Parish, Louisiana Married by Age and Sex

male

female

St. Tammany Parish, Louisiana Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

St. Tammany Parish, Louisiana Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

St. Tammany Parish, Louisiana Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

15,511

Number of Veterans

13,595

Male Veterans

1,916

Female Veterans

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War
Veterans
Vietnam5,451
First Gulf War4,046
Second Gulf War3,597
Korea975
World War II131

St. Tammany Parish, Louisiana Veterans by War

count

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Age Group
Veterans
35 to 544,380
65 to 744,270
75+3,476
55 to 642,437
18 to 34948

St. Tammany Parish, Louisiana Veterans by Age

count

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Name
Veterans
% of Total
White12,7767.9%
Black1,8638.21%
2+ Races6606.27%
Hispanic4534.11%
Other Race1084.79%
Asian792.66%
Native American251.72%

St. Tammany Parish, Louisiana Veterans by Race

St. Tammany Parish, Louisiana Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

7.59%

Veteran Poverty Rate

34.51%

Veteran Disability Rate

St. Tammany Parish, Louisiana Veterans by Education

LaborForceParticipation

62.5%

Labor Force Participation

58.6%

Employment Rate

5.2%

Unemployment Rate

St. Tammany Parish, Louisiana Employment by Age

LaborForceParticipation

St. Tammany Parish, Louisiana Employment by Race

LaborForceParticipation

St. Tammany Parish, Louisiana Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

70.53%

Born in St. Tammany Parish, Louisiana

95.65%

Native Born

4.35%

Foreign Born

2.28%

Non Citizen

2.07%

Naturalized

Place of Birth

95.65% of St. Tammany Parish, Louisiana residents were born in the United States, with 70.53% having been born in Louisiana. 2.28% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

St. Tammany Parish, Louisiana Place of Birth

Sources