Saint Mary County, LA ZIP Codes
Louisiana (LA) · 10 ZIP codes · 9 cities
10
ZIP codes
48,232
population (2021)
-11.7%
pop change since 2010
22101
FIPS code
Saint Mary County ZIP code map
About Saint Mary County
Saint Mary County is located in Louisiana and contains 10 ZIP codes across 9 cities and communities.
The county's population was 48,232 as of 2021,
a decrease of
11.7% from 54,650 in 2010.
The timezone is Mountain Time (observes DST).
The Federal Information Processing System (FIPS) code for Saint Mary County is 22101.
| Population | |
|---|---|
| 2021 population | 48,232 |
| 2010 population | 54,650 |
| Change | -11.7% |
| County details | |
|---|---|
| State | Louisiana |
| FIPS code | 22101 |
| Timezone | Mountain |
| Daylight saving | Yes |
Cities in Saint Mary County
ZIP codes for Saint Mary County, LA (10)
| ZIP code | City | County | Map |
|---|---|---|---|
| 70340 | Amelia | Saint Mary | View map |
| 70342 | Berwick | Saint Mary | View map |
| 70380 | Morgan City | Saint Mary | View map |
| 70381 | Morgan City | Saint Mary | View map |
| 70392 | Patterson | Saint Mary | View map |
| 70514 | Baldwin | Saint Mary | View map |
| 70522 | Centerville | Saint Mary | View map |
| 70523 | Charenton | Saint Mary | View map |
| 70538 | Franklin | Saint Mary | View map |
| 70540 | Garden City | Saint Mary | View map |
Demographics & statistics
49,379
Population
39.3
Median age
$47,131
Median household income
$27,034
Per capita income
$137,360
Median home value
$766
Median monthly rent
66.6%
Home ownership
26.2%
Poverty rate
5.3%
Unemployment
17,067
Housing units
12.6%
Bachelor's or higher
Age distribution
Male
Female
1,697
Under 5
1,717
1,505
5–9
1,522
1,761
10–14
1,781
1,514
15–19
1,532
1,299
20–24
1,313
3,045
25–34
3,080
2,902
35–44
2,935
3,006
45–54
3,041
1,652
55–59
1,671
1,893
60–64
1,914
2,476
65–74
2,505
1,233
75–84
1,247
566
85+
572
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 11,957 | 22.8% |
| 18 and over | 37,422 | 77.2% |
| 65 and over | 8,599 | 15.9% |
| Median age | 39.3 years | |
Race & ethnicity
White
58.2%
Black or African American
25.9%
Two or more races
5.6%
Hispanic or Latino
5.2%
Other race
3.1%
Asian
1.3%
American Indian / Alaska Native
0.7%
| Group | Count | % |
|---|---|---|
| White | 30,284 | 58.2% |
| Black or African American | 13,477 | 25.9% |
| Two or more races | 2,938 | 5.6% |
| Hispanic or Latino | 2,697 | 5.2% |
| Other race | 1,637 | 3.1% |
| Asian | 653 | 1.3% |
| American Indian / Alaska Native | 377 | 0.7% |
Household income
Under $10k
10.2%
$10k–$15k
10.2%
$15k–$25k
9.3%
$25k–$35k
11.0%
$35k–$50k
14.4%
$50k–$75k
12.1%
$75k–$100k
10.5%
$100k–$150k
14.4%
$150k–$200k
4.2%
$200k+
3.7%
| Range | % of households |
|---|---|
| Under $10k | 10.2% |
| $10k–$15k | 10.2% |
| $15k–$25k | 9.3% |
| $25k–$35k | 11.0% |
| $35k–$50k | 14.4% |
| $50k–$75k | 12.1% |
| $75k–$100k | 10.5% |
| $100k–$150k | 14.4% |
| $150k–$200k | 4.2% |
| $200k+ | 3.7% |
| Median income | $47,131 |
Housing
Home values
Under $50k
20.3%
$50k–$100k
17.4%
$100k–$150k
19.1%
$150k–$200k
16.7%
$200k–$300k
13.0%
$300k–$500k
9.6%
$500k–$1M
2.9%
$1M+
1.2%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $137,360 |
| Median rent / month | $766 |
| Owner occupied | 66.6% |
| Renter occupied | 33.4% |
| Vacant | 18.1% |
| Single-family detached | 67.1% |
| Large apartment buildings | 0.7% |
| Mobile homes | 20.1% |
| Median rooms | 5.3 |
| Avg household size (owned) | 2.62 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 8.7% |
| 2000–2009 | 17.4% |
| 1990–1999 | 11.2% |
| 1980–1989 | 12.6% |
| 1970–1979 | 16.7% |
| 1960–1969 | 12.4% |
| 1950–1959 | 11.1% |
| 1940–1949 | 3.1% |
| 1939 or earlier | 6.8% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.8% |
| 1 bedroom | 7.1% |
| 2 bedrooms | 23.5% |
| 3 bedrooms | 53.4% |
| 4 bedrooms | 13.6% |
| 5+ bedrooms | 1.5% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 14.8% |
| 1 vehicle | 34.2% |
| 2 vehicles | 35.6% |
| 3 or more | 15.4% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 28.2% |
| Electricity | 71.3% |
| Propane / LP gas | 0.3% |
| No fuel used | 0.1% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 8,241 | 40.0% |
| Cohabiting couple | 1,379 | 6.9% |
| Male householder, no spouse | 3,573 | 22.5% |
| Female householder, no spouse | 5,478 | 30.6% |
| Households with children under 18 | 5,722 | 28.0% |
| Households with seniors (65+) | 6,312 | 34.2% |
| Average household size | 2.67 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 42.3% | 34.8% |
| Married | 43.3% | 39.2% |
| Separated | 2.7% | 3.6% |
| Widowed | 3.2% | 10.6% |
| Divorced | 8.5% | 11.8% |
Education
Less than 9th grade
6.1%
Some HS, no diploma
12.9%
HS graduate
47.9%
Some college, no degree
14.1%
Associate's degree
6.4%
Bachelor's degree
8.3%
Graduate / professional
4.4%
| Metric | % |
|---|---|
| HS diploma or higher | 81.1% |
| Bachelor's or higher | 12.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 762 | 7.7% |
| Kindergarten | 506 | 4.2% |
| Elementary school | 5,394 | 48.0% |
| High school | 2,530 | 19.9% |
| College / grad school | 1,505 | 20.2% |
Employment
Industry of employment
Education & healthcare
21.7%
Retail trade
13.0%
Agriculture & mining
10.2%
Arts, food & hospitality
8.7%
Manufacturing
8.2%
Construction
7.6%
Professional & management
6.3%
Transportation & utilities
6.2%
Other services
5.3%
Finance & real estate
5.1%
Public administration
4.1%
Wholesale trade
2.4%
Information
1.1%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 24.8% |
| Service | 17.6% |
| Sales & office | 25.4% |
| Natural resources & construction | 13.4% |
| Production & transportation | 18.8% |
Employment type
| Type | % |
|---|---|
| Private sector | 81.2% |
| Government | 14.4% |
| Self-employed | 4.3% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 84.3% |
| Carpool | 9.9% |
| Public transit | 0.0% |
| Walk | 1.3% |
| Other means | 1.1% |
| Avg commute (minutes) | 25.4 |
Poverty
All people
26.2%
Under 18 years
31.4%
18 and over
25.0%
Married-couple families
8.4%
Female-led households
39.3%
Income support
| Source | % of households |
|---|---|
| Social Security | 35.6% |
| Retirement income | 19.1% |
| Supplemental Security | 12.9% |
| Cash public assistance | 1.2% |
| Food stamps / SNAP | 25.6% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 40.6% |
| High cholesterol | 36.2% |
| Heart disease | 7.5% |
| Stroke | 4.2% |
| Asthma | 10.2% |
| Arthritis | 26.0% |
| Kidney disease | 3.5% |
| Pulmonary disease | 8.9% |
| Cancer | 6.0% |
| Behavior / access | % |
|---|---|
| Binge drinking | 18.5% |
| No physical activity | 33.7% |
| Less than 7 hrs sleep | 36.6% |
| Fair or poor health | 22.8% |
| Poor mental health | 18.6% |
| Poor physical health | 14.0% |
| No health insurance | 17.3% |
| Visited doctor (checkup) | 78.4% |
| Visited dentist | 51.1% |
| Cholesterol screening | 88.3% |
| Teeth loss | 22.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,146 | 5.6% |
| Disability | % |
|---|---|
| Any disability | 18.3% |
| Under 18 | 4.0% |
| 18–64 years | 16.7% |
| 65 and over | 42.4% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 45.0% |
| Public insurance | 57.9% |
| Uninsured under 19 | 1.7% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 45,965 | 92.7% |
| Spanish | 2,179 | 4.0% |
| Other Indo-European | 1,483 | 3.0% |
| Asian & Pacific Islander | 308 | 0.4% |
| Other languages | 371 | 0.5% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 47,152 | 97.4% |
| Born in same state | 47,003 | 97.2% |
| Born in different state | 41,439 | 87.2% |
| Foreign born | 149 | 0.2% |
| Naturalized citizen | 2,227 | 2.6% |
| Not a US citizen | 840 | 49.8% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Arab | 2,939 | 6% |
| Italian | 2,170 | 4.4% |
| French | 1,957 | 4% |
| German | 1,309 | 2.7% |
| Ancestry | Count | % |
|---|---|---|
| English | 150 | 0.3% |
| Irish | 56 | 0.1% |
| Dutch | 23 | 0% |
| Polish | 10 | 0% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 37.1% |
| Internet access | 88.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
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