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Louisiana ZIP Codes
Acadia County
Mermentau, LA
70556
70556 ZIP Code — Mermentau, LA
Acadia County, Louisiana
ZIP code 70556 is located in
Mermentau ,
Louisiana ,
within Acadia County .
It covers approximately 1.77 square miles and serves a population of
644 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 337 .
About ZIP code 70556
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $56,800. Owner-occupancy is high at 76%, well above the national average.
Median household income is $110,213. Poverty affects 19% of residents, above the national average. SNAP benefit usage at 17% of households reflects economic stress in the area. 74% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is production, transportation, and material moving, with education and healthcare as the leading industry. The average commute of 19 minutes is near the national average.
Educational attainment is near the national average, with 35% of residents holding a bachelor's degree or higher.
Health indicators show elevated rates of smoking (28%) compared to national benchmarks.
Overall, ZIP code 70556 reflects a community defined by economic challenges above the national average, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.
70556 ZIP code map
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Cities in ZIP code 70556
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Demographics
updated 05/2026
Population
Total population
644
Population density
364 / sq mi
State FIPS
22
County FIPS
001
Geography
Land area
1.77 sq mi
Water area
0.17 sq mi
Latitude
30.1973
Longitude
-92.5585
Timezone
Central (CT)
Area code
337
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
78.1%
54.0%
49.2%
$50k – $100k
11.6%
27.0%
27.7%
$100k – $200k
10.3%
16.7%
18.3%
Over $200k
0.0%
2.4%
4.7%
Demographics & statistics
$110,213
Median household income
34.9%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 67 10.4% 18 and over 577 89.6% 65 and over 295 45.8% Median age 62.6 years
Race & ethnicity
Black or African American
17.6%
Group Count % White 512 78.2% Black or African American 115 17.6% Two or more races 17 2.6% Hispanic or Latino 11 1.7%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
78.1%
54.0%
49.2%
$50k – $100k
11.6%
27.0%
27.7%
$100k – $200k
10.3%
16.7%
18.3%
Over $200k
0.0%
2.4%
4.7%
Range % of households Under $10k 2.9% $10k–$15k 7.4% $15k–$25k 7.9% $25k–$35k 8.2% $35k–$50k 10.0% $50k–$75k 2.9% $75k–$100k 3.8% $100k–$150k 54.7% $150k–$200k 2.1% Median income $110,213
Housing
Housing overview
Metric Value Median home value $56,800 Median rent / month $463 Owner occupied 76.2% Renter occupied 23.8% Vacant 11.5% Single-family detached 73.7% Large apartment buildings 4.4% Mobile homes 4.4% Median rooms 4.9 Avg household size (owned) 1.85
Year built
Era % 2020 or later 0.0% 2010–2019 3.6% 2000–2009 5.7% 1990–1999 6.5% 1980–1989 1.0% 1970–1979 11.7% 1960–1969 17.7% 1950–1959 45.3% 1940–1949 1.3% 1939 or earlier 7.0%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 14.6% 2 bedrooms 60.7% 3 bedrooms 15.6% 4 bedrooms 9.1% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 7.1% 1 vehicle 20.6% 2 vehicles 62.4% 3 or more 10.0%
Heating fuel
Fuel type % Utility gas 75.3% Electricity 24.7%
Households & families
Household type Count % Married-couple family 217 63.8% Cohabiting couple 12 3.5% Male householder, no spouse 29 8.5% Female householder, no spouse 82 24.1% Households with children under 18 40 11.8% Households with seniors (65+) 242 71.2% Average household size 1.89
Marital status
Status Male Female Never married 43.9% 25.4% Married 43.0% 58.5% Separated 0.0% 4.0% Widowed 9.8% 7.1% Divorced 3.3% 5.0%
Education
Some HS, no diploma
11.6%
Some college, no degree
13.9%
Graduate / professional
2.1%
Metric % HS diploma or higher 81.0% Bachelor's or higher 34.9%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 14 17.7% Elementary school 27 34.2% High school 15 19.0% College / grad school 23 29.1%
Employment
Industry of employment
Education & healthcare
22.1%
Arts, food & hospitality
17.4%
Transportation & utilities
6.0%
Agriculture & mining
4.7%
Professional & management
4.7%
Finance & real estate
4.0%
Occupation
Category % Management, business & arts 8.7% Service 22.8% Sales & office 24.8% Natural resources & construction 12.8% Production & transportation 30.9%
Employment type
Type % Private sector 100.0% Government 0.0% Self-employed 0.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 100.0% Carpool 0.0% Public transit 0.0% Walk 0.0% Work from home 0.0% Other means 0.0% Avg commute (minutes) 18.6
Poverty
Married-couple families
2.8%
Female-led households
30.2%
Income support
Source % of households Social Security 74.4% Retirement income 58.2% Supplemental Security 2.9% Cash public assistance 0.0% Food stamps / SNAP 17.4%
Health indicators
Condition % Obesity 36.9% High blood pressure 41.1% High cholesterol 38.9% Diabetes 14.1% Heart disease 8.8% Stroke 4.7% Asthma 10.6% Arthritis 28.6% Kidney disease 3.9% Pulmonary disease 11.5% Cancer 6.7%
Behavior / access % Smoking 28.1% Binge drinking 18.4% No physical activity 36.2% Less than 7 hrs sleep 35.0% Depression 30.4% Fair or poor health 24.8% Poor mental health 21.1% Poor physical health 16.1% No health insurance 17.8% Visited doctor (checkup) 76.8% Visited dentist 47.3% Cholesterol screening 85.4% Teeth loss 26.3%
Veterans & disability
Veterans Count % Civilian veterans 22 3.8%
Disability % Any disability 14.9% Under 18 0.0% 18–64 years 20.9% 65 and over 12.5%
Health insurance coverage
Type % Private insurance 40.7% Public insurance 68.6% No insurance 2.0% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 635 98.6% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 644 100.0% Born in same state 644 100.0% Born in different state 597 92.7% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % German 74 11.5% Arab 30 4.7%
Ancestry Count % French 26 4%
Technology access
Metric % of households Computer access 52.8% Internet access 87.1%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 70556
What city is ZIP code 70556 in?
ZIP code 70556 is primarily assigned to Mermentau, Louisiana.
What county is ZIP code 70556 in?
ZIP code 70556 falls within Acadia County, Louisiana.
Does ZIP code 70556 have a large retiree population?
74% of households in ZIP code 70556 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 70556 have an older population?
46% of residents in ZIP code 70556 are 65 or older, above the national average of ~17%.
What is the poverty rate in ZIP code 70556?
19% of residents in ZIP code 70556 live below the poverty line, above the national average.
What is the typical home value in ZIP code 70556?
The median home value in ZIP code 70556 is $56,800.
What timezone is ZIP code 70556 in?
ZIP code 70556 observes the CST timezone.
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