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COUNTY

St. Tammany Parish

Louisiana · 279,108 residents (2025 est.) · 845 sq mi
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The short version

St. Tammany Parish is home to 272,421 people in Louisiana. Few US counties rank higher on income. 81,153 more people live here than in 2000. 79% of homes are owner-occupied. Households here earn about 34% more than in Louisiana as a whole. The foreign-born share is 4%.

At a glance
Average income
near the US median
US median: $82,259
Mid-age
median age 40.5
US median: 38.9
Average education
38% hold a bachelor's degree
US average: 36%
Less affordable
home values up 34%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
272,421
+42%since 2000
from 191,268 in 2000
279,108 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
322 / sq mi
+21%since 2009
from 267 / sq mi in 2009
US average: 281
Median age
40.5
+12%since 2000
from 36.3 in 2000
US average: 38.9
Land area
845 sq mi
Population, 1990 – 2024
132K170K208K247K285K19902000201020202024St. Tammany Parish
2024272K
1990201020202024
Age distribution, 2024
Under 55.7%(15,579)
US avg: 5.6%
5 to 97%(19,050)
US avg: 6%
10 to 146.4%(17,387)
US avg: 6.4%
15 to 196.7%(18,295)
US avg: 6.6%
20 to 245.4%(14,728)
US avg: 6.5%
25 to 3411.2%(30,474)
US avg: 13.7%
35 to 4413.3%(36,299)
US avg: 13.2%
45 to 5412.4%(33,816)
US avg: 12.2%
55 to 6413.4%(36,555)
US avg: 12.7%
65 to 7411.3%(30,693)
US avg: 10.2%
75 to 845.3%(14,372)
US avg: 5.1%
85 and over1.9%(5,173)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$81,202
−7%inflation adjusted, since 2000
from $47,883 in 2000
US average: $82,259
1990 – 2024
Per capita income
$43,364
+93%since 2000
from $22,514 in 2000
US average: $44,673
Households earning $100K+
53.8%
+14.8 ptssince 2009
from 39.0% in 2009
US average: 53.3%
Poverty rate
11.4%
+1.7 ptssince 2000
from 9.7% in 2000
US average: 12.5%
Income inequality (Gini)
0.459
+4%since 2010
from 0.441 in 2010
US average: 0.476
Workforce by industry, 2024
Information10.1%
US avg: 10.8%
Wholesale trade8.1%
US avg: 6.9%
Other services7.2%
US avg: 6.7%
Finance & insurance6.4%
US avg: 5.9%
Retail trade5.7%
US avg: 9.9%
Public administration5.6%
US avg: 4.8%
Professional, scientific, technical5.3%
US avg: 5.1%
Transportation & warehousing3.2%
US avg: 2.2%
Agriculture, forestry, fishing2.1%
US avg: 1.6%
Manufacturing1.7%
US avg: 0.4%
Arts, entertainment, food1.6%
US avg: 1.9%
Education & health services1.1%
US avg: 0.9%
Construction0.4%
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$284,000
+34%inflation adjusted, since 2000
from $116,000 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,332
+23%inflation adjusted, since 2000
from $593 in 2000
US average: $1,442
Owner-occupied
78.9%
−1.6 ptssince 2000
from 80.5% in 2000
21.1% rent
Vacancy rate
7.8%
−2.7 ptssince 2009
from 10.5% in 2009
US average: 10.0%
Persons per household
2.57 people
−3%since 2009
from 2.65 people in 2009
US average: 2.54
Owner cost-burdened
23.4%
−2.1 ptssince 2009
from 25.4% in 2009
US average: 22.9%
Renter cost-burdened
47.9%
+3.7 ptssince 2009
from 44.1% in 2009
US average: 47.4%
Afford Score
3.5
+11%since 2009
from 3.1 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
31
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic85.3%(163,061)
Black9.8%(18,788)
Hispanic / Latino2.5%(4,737)
Asian0.7%(1,413)
Other0%
2024
White, non-Hispanic72.4%(197,214)
Black12%(32,750)
Hispanic / Latino8.2%(22,407)
Asian1.3%(3,643)
Other6%(16,407)
Diversity Score
56
+43%since 2009
from 39 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
31
−8%since 2020
from 34 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Central American2.8%(7,748)
Mexican2%(5,537)
Honduran1.8%(4,921)
Spaniard0.8%(2,205)
Puerto Rican0.6%(1,605)
Guatemalan0.3%(931)
Cuban0.2%(673)
Salvadoran0.2%(662)
Nicaraguan0.2%(606)
Colombian0.2%(435)
Dominican0.1%(211)
+ 9 more hispanic origin groups with data
Panamanian0.1%(186)
Costa Rican0.1%(156)
Peruvian0.1%(151)
Venezuelan0%(119)
Ecuadorian0%(114)
Argentine0%(97)
Chilean0%(13)
Asian origin
Vietnamese0.5%(1,411)
Asian Indian0.2%(638)
Chinese0.2%(507)
Filipino0.1%(261)
Burmese0%(128)
Japanese0%(114)
Pakistani0%(103)
Nepalese0%(92)
Thai0%(78)
Korean0%(67)
Taiwanese0%(54)
Laotian0%(44)
+ 3 more asian origin groups with data
Uzbek0%(26)
Pacific Islander origin
Samoan0.2%(420)
Chamorro0.1%(401)
Guamanian0%(42)
Ancestry
German14.9%(40,668)
French14.1%(38,458)
Irish13.1%(35,773)
English10.8%(29,399)
Italian10.3%(28,133)
American9.6%(26,266)
Scottish1.6%(4,223)
French Canadian1.5%(3,983)
Polish0.9%(2,374)
Scotch-Irish0.8%(2,265)
West Indian0.6%(1,551)
Arab0.5%(1,408)
+ 44 more ancestry groups with data
Norwegian0.5%(1,377)
Welsh0.5%(1,254)
British0.4%(1,179)
Dutch0.4%(1,156)
Swedish0.4%(1,045)
Hungarian0.2%(633)
Russian0.2%(529)
Lebanese0.2%(511)
Danish0.2%(511)
Austrian0.2%(505)
Haitian0.2%(457)
Greek0.2%(441)
Croatian0.2%(413)
Canadian0.1%(397)
Lithuanian0.1%(371)
Portuguese0.1%(348)
Syrian0.1%(322)
Nigerian0.1%(312)
Swiss0.1%(255)
Turkish0.1%(252)
Czech0.1%(230)
Ukrainian0.1%(202)
Slovak0.1%(173)
Israeli0.1%(170)
Belgian0.1%(166)
Brazilian0.1%(159)
Australian0.1%(154)
Finnish0%(127)
Iranian0%(126)
Barbadian0%(96)
Romanian0%(76)
Jordanian0%(73)
Bulgarian0%(60)
Slovene0%(58)
Moroccan0%(39)
Armenian0%(37)
Egyptian0%(36)
Serbian0%(34)
Latvian0%(28)
Kenyan0%(18)
Section 05

Education

Bachelor's degree or higher
37.7%
+9.3 ptssince 2000
from 28.3% in 2000
US average: 35.6%
High school or higher
92.0%
+8.1 ptssince 2000
from 83.9% in 2000
US average: 89.6%
Graduate degree
13.4%
+3.9 ptssince 2000
from 9.5% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
31.5 min
+26%since 2000
from 25.0 min in 2000
US average: 26.5
Drive alone to work
77.1%
−4.6 ptssince 2009
from 81.7% in 2009
US average: 68.9%
Carpooled to work
7.2%
−4.2 ptssince 2009
from 11.4% in 2009
US average: 8.5%
Public transit
0.1%
−0.1 ptssince 2009
from 0.2% in 2009
US average: 3.2%
Worked from home
13.2%
+9.6 ptssince 2009
from 3.6% in 2009
US average: 15.0%
Walked to work
0.8%
−0.2 ptssince 2009
from 1.0% in 2009
US average: 2.4%
Biked to work
0.1%
−0.4 ptssince 2009
from 0.5% in 2009
US average: 0.4%
No vehicle available
4.3%
+0.6 ptssince 2009
from 3.7% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
4.8%
−1.4 ptssince 2011
from 6.1% in 2011
US average: 5.2%
Labor force participation
62.9%
−0.1 ptssince 2011
from 63.0% in 2011
US average: 63.5%
Women 20-64 in the labor force
73.9%
+3.7 ptssince 2020
from 70.2% in 2020
US average: 74.6%
Self-employed
12.3%
+0.8 ptssince 2009
from 11.4% in 2009
US average: 13.1%
Management & professional
46.1%
+7.0 ptssince 2009
from 39.2% in 2009
US average: 42.5%
Section 08

People & community

Male
48.9%
−0.1 ptssince 2009
from 49.0% in 2009
Female
51.1%
+0.1 ptssince 2009
from 51.0% in 2009
Foreign born
4.5%
+1.4 ptssince 2009
from 3.1% in 2009
US average: 14.1%
Veterans
7.5%
−4.9 ptssince 2009
from 12.4% in 2009
US average: 6.2%
With a disability
16.1%
+2.3 ptssince 2012
from 13.8% in 2012
US average: 13.3%
Uninsured
6.8%
−6.9 ptssince 2013
from 13.7% in 2013
US average: 8.4%
Broadband at home
94.1%
+10.5 ptssince 2017
from 83.6% in 2017
US average: 91.0%
Computer in household
96.7%
+3.6 ptssince 2020
from 93.1% in 2020
US average: 95.5%
Same house as last year
88.5%
+2.2 ptssince 2020
from 86.3% in 2020
US average: 87.7%
English only at home
93.0%
−0.8 ptssince 2016
from 93.8% in 2016
US average: 77.7%
Spanish at home
4.3%
+0.9 ptssince 2016
from 3.4% in 2016
US average: 13.6%
Marital status
Men 15+
Never married30.7%(32,802)
Married57.3%(61,189)
Widowed2.5%(2,640)
Divorced9.5%(10,190)
Women 15+
Never married26.4%(29,965)
Married51.5%(58,521)
Widowed8.6%(9,767)
Divorced13.5%(15,331)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
6.8%
−6.9 ptssince 2013
from 13.7% in 2013
US average: 8.4%
Employer-based
53.9%
−0.7 ptssince 2020
from 54.6% in 2020
US average: 54.8%
Direct-purchase
12.4%
−2.1 ptssince 2020
from 14.5% in 2020
US average: 13.8%
Medicare
19.7%
+0.3 ptssince 2020
from 19.4% in 2020
US average: 18.4%
Medicaid
21.4%
+2.0 ptssince 2020
from 19.4% in 2020
US average: 20.9%
VA health care
2.3%
−0.2 ptssince 2020
from 2.5% in 2020
US average: 2.2%
Any private
66.2%
−2.3 ptssince 2020
from 68.5% in 2020
US average: 67.1%
Any public
38.8%
+2.2 ptssince 2020
from 36.6% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)28%(4,326)
US avg: 26.4%
Gulf War (1990s)31%(4,796)
US avg: 24.3%
Vietnam era33.8%(5,229)
US avg: 33.1%
Korean War3.9%(605)
US avg: 4.5%
World War II0.3%(43)
US avg: 1%

Share of the 15,461 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper

Places similar to St. Tammany Parish

Sussex County
Pop 277,140
Atlantic County
Pop 278,657
Henry County
Pop 264,922
Baldwin County
Pop 267,761
Places similar to St. Tammany Parish
Head to head

Compare St. Tammany Parish to nearby counties

ST. TAMMANY PARISH VS
Orleans Parish
Income$56,631−30%
Home value$315,700+11%
Population362,154+30%
SEE FULL COMPARISON →
ST. TAMMANY PARISH VS
Hancock County
Income$67,708−17%
Home value$224,200−21%
Population46,873−83%
SEE FULL COMPARISON →
ST. TAMMANY PARISH VS
Tangipahoa Parish
Income$56,760−30%
Home value$212,900−25%
Population141,346−49%
SEE FULL COMPARISON →
ST. TAMMANY PARISH VS
Washington Parish
Income$45,380−44%
Home value$155,700−45%
Population44,937−84%
SEE FULL COMPARISON →
Frequently asked

How many people live in St. Tammany Parish, Louisiana?

St. Tammany Parish, Louisiana has about 272,421 residents according to the 2024 American Community Survey.

What is the median household income in St. Tammany Parish, Louisiana?

The typical household in St. Tammany Parish, Louisiana earns about $81,202 a year. Half of households make more than that, and half make less.

Is St. Tammany Parish, Louisiana expensive?

In St. Tammany Parish, Louisiana, the median home is worth about $284,000, and the typical rent is about $1,332 a month.

How educated are people in St. Tammany Parish, Louisiana?

About 37.7% of adults age 25 and over in St. Tammany Parish, Louisiana hold a bachelor's degree or higher.

What is the poverty rate in St. Tammany Parish, Louisiana?

About 11.4% of people in St. Tammany Parish, Louisiana live below the federal poverty line.

Has St. Tammany Parish, Louisiana grown since 1990?

Yes, St. Tammany Parish, Louisiana has grown since 1990. The population has added about 127,913 residents, a change of about 89 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →