Plaquemines Parish is a county of 22,803 people in Louisiana. Few US counties rank higher on income. 22% of adults hold a bachelor's degree, below the 36% national rate. Households here earn about 42% more than in Louisiana as a whole. 76% of homes are owner-occupied. There are 29 people per square mile.
At a glance
Average income
median household income $86,315, near the US median
US median: $82,259
Mid-age
median age 37.5
US median: 38.9
Less educated
22% hold a bachelor's degree
US average: 36%
Less affordable
home values up 125%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Plaquemines Parish
What changed most since 1990
Population25,575 → 22,803(−11%)US over the same years: +35%
Poverty rate22.6% → 12.9%(−9.8 pts)US over the same years: −0.8 pts
Median household income (2024 dollars)$57,784 → $86,315(+49%)US over the same years: +14%
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)33.9%(413)
US avg: 26.4%
Gulf War (1990s)42.1%(512)
US avg: 24.3%
Vietnam era27.5%(335)
US avg: 33.1%
Korean War4.3%(52)
US avg: 4.5%
World War II1.4%(17)
US avg: 1%
Share of the 1,217 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
Over time
Plaquemines Parish, decade by decade
Plaquemines Parish population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
25,575
$57,784
$151,924
7.5%
57.1
2000
26,757
$69,538
$125,512
10.8%
58.8
2010
23,042
$78,733
$292,174
17.4%
62.0
2020
23,515
$79,066
$245,680
18.2%
75.0
2024
22,803
$86,315
$282,900
21.5%
74.5
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Plaquemines Parish, Louisiana?
Plaquemines Parish, Louisiana has about 22,803 residents according to the 2024 American Community Survey.
What is the median household income in Plaquemines Parish, Louisiana?
The typical household in Plaquemines Parish, Louisiana earns about $86,315 a year. Half of households make more than that, and half make less.
Is Plaquemines Parish, Louisiana expensive?
In Plaquemines Parish, Louisiana, the median home is worth about $282,900, and the typical rent is about $1,573 a month.
How educated are people in Plaquemines Parish, Louisiana?
About 21.5% of adults age 25 and over in Plaquemines Parish, Louisiana hold a bachelor's degree or higher.
What is the poverty rate in Plaquemines Parish, Louisiana?
About 12.9% of people in Plaquemines Parish, Louisiana live below the federal poverty line.
Has Plaquemines Parish, Louisiana grown since 1990?
Yes, Plaquemines Parish, Louisiana has shrunk since 1990. The population has lost about 2,772 residents, a change of about -11 percent over that period.
