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World Population Review
St. Mary Parish, Louisiana Population 2021
St. Mary Parish, Louisiana's estimated population is 48,362 with a growth rate of -1.01% in the past year according to the most recent United States census data. St. Mary Parish, Louisiana is the 23rd largest county in Louisiana. The 2010 Population was 54,550 and has seen a growth of -11.34% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 48,362 | -493 | -1.01% |
| 2020 | 48,855 | -493 | -1.00% |
| 2019 | 49,348 | -493 | -0.99% |
| 2018 | 49,841 | -867 | -1.71% |
| 2017 | 50,708 | -1,361 | -2.61% |
| 2016 | 52,069 | -807 | -1.53% |
| 2015 | 52,876 | -397 | -0.75% |
| 2014 | 53,273 | -308 | -0.57% |
| 2013 | 53,581 | 19 | 0.04% |
| 2012 | 53,562 | -625 | -1.15% |
| 2011 | 54,187 | -363 | -0.67% |
| 2010 | 54,550 | -3,536 | -6.09% |
| 1990 | 58,086 | -6,167 | -9.60% |
| 1980 | 64,253 | 3,501 | 5.76% |
| 1970 | 60,752 | 11,919 | 24.41% |
| 1960 | 48,833 | 12,985 | 36.22% |
| 1950 | 35,848 | 4,390 | 13.96% |
| 1940 | 31,458 | 2,061 | 7.01% |
| 1930 | 29,397 | -1,357 | -4.41% |
| 1920 | 30,754 | -8,614 | -21.88% |
| 1910 | 39,368 | 5,223 | 15.30% |
| 1900 | 34,145 | 11,729 | 52.32% |
| 1890 | 22,416 | 2,525 | 12.69% |
| 1880 | 19,891 | 6,031 | 43.51% |
| 1870 | 13,860 | -2,956 | -17.58% |
| 1860 | 16,816 | 3,119 | 22.77% |
| 1850 | 13,697 | 4,747 | 53.04% |
| 1840 | 8,950 | 2,508 | 38.93% |
| 1830 | 6,442 | 0.00% |
2021 Growth Rate
-1.01%
County Website
State
Founded
1811
County Seat
Lat./Long.
2010 Population
54,550
Growth Since 2010
-11.34%
St. Mary Parish, Louisiana Population Growth
| Race | Population | Percentage |
|---|---|---|
| White | 30,016 | 58.89% |
| Black or African American | 15,531 | 30.47% |
| Two or More Races | 2,191 | 4.30% |
| Some Other Race | 1,649 | 3.24% |
| American Indian and Alaska Native | 836 | 1.64% |
| Asian | 734 | 1.44% |
| Native Hawaiian and Other Pacific Islander | 11 | 0.02% |
St. Mary Parish, Louisiana Population by Race
St. Mary Parish, Louisiana Population Pyramid $2021
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St. Mary Parish, Louisiana Population by Age
St. Mary Parish, Louisiana Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 19,856 | 2.52 | 60.7 |
| Non Family | 8,502 | 1.14 | 43.4 |
| Married | 7,517 | 3.37 | 80.8 |
| Female | 2,672 | 4.18 | 57.9 |
| Male | 1,165 | 3.38 | 64.1 |
3.49
Average Family Size
2.52
Average Household Size
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St. Mary Parish, Louisiana Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 2,045 | 5.93% |
| 9th to 12th Grade | 3,887 | 11.26% |
| High School Graduate | 17,597 | 50.99% |
| Some College | 5,157 | 14.94% |
| Associates Degree | 2,293 | 6.64% |
| Bachelors Degree | 2,419 | 7.01% |
| Graduate Degree | 1,112 | 3.22% |
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St. Mary Parish, Louisiana Educational Attainment by Sex (over 25)
St. Mary Parish, Louisiana Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 20,554 | 17,646 | 2,504 |
| Black | 10,354 | 8,352 | 836 |
| Hispanic | 2,042 | 1,441 | 114 |
| Other Race | 1,121 | 759 | 10 |
| Asian | 604 | 353 | 44 |
| Native American | 548 | 449 | 18 |
| 2+ Races | 465 | 401 | 35 |
| Islander | 11 | 11 | 6 |
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among islander people with a rate of 54.55%.
St. Mary Parish, Louisiana Educational Attainment by Race
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$37,586
Average Earnings
$48,211
Average Male
$28,520
Average Female
St. Mary Parish, Louisiana Earnings by Educational Attainment
St. Mary Parish, Louisiana Language by Age
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St. Mary Parish, Louisiana Language
91.53% of St. Mary Parish, Louisiana residents speak only English, while 8.47% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.75% of the population.
St. Mary Parish, Louisiana Language
St. Mary Parish, Louisiana Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 28,207 | 4,715 | 16.72% |
| Black | 15,117 | 3,599 | 23.81% |
| Hispanic | 3,573 | 665 | 18.61% |
| Multiple | 2,144 | 629 | 29.34% |
| Other | 1,649 | 304 | 18.44% |
| Asian | 734 | 266 | 36.24% |
| Native | 827 | 130 | 15.72% |
| Islander | 11 | 9 | 81.82% |
19.73%
Overall Poverty Rate
18.71%
Male Poverty Rate
20.72%
Female Poverty Rate
Poverty in St. Mary Parish, Louisiana
The race most likely to be in poverty in St. Mary Parish, Louisiana is Islander, with 81.82% below the poverty level.
The race least likely to be in poverty in St. Mary Parish, Louisiana is Native, with 15.72% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.08%. Among those working part-time, it was 19.21%, and for those that did not work, the poverty rate was 31.00%.
St. Mary Parish, Louisiana Poverty
St. Mary Parish, Louisiana Poverty Rate by Education
St. Mary Parish, Louisiana Marital Status
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Marriage Rates
39.4%
Overall Marriage Rate
41.6%
Male Marriage Rate
37.3%
Female Marriage Rate
St. Mary Parish, Louisiana Married by Age and Sex
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St. Mary 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. Mary Parish, Louisiana Marital Status by Race
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St. Mary Parish, Louisiana Marital Status
St. Mary Parish, Louisiana Veterans by War
St. Mary Parish, Louisiana Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 1,512 | 6.41% |
| Black | 541 | 4.57% |
| Hispanic | 100 | 4.36% |
| 2+ Races | 23 | 3.82% |
| Native American | 23 | 3.85% |
| Other Race | 10 | 0.80% |
| Asian | 5 | 0.75% |
St. Mary Parish, Louisiana Veterans by Race
St. Mary Parish, Louisiana Veterans by Education
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11.91%
Veteran Poverty Rate
41.13%
Veteran Disability Rate
St. Mary Parish, Louisiana Veterans by Education
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52.8%
Labor Force Participation
48%
Employment Rate
8.7%
Unemployment Rate
St. Mary Parish, Louisiana Employment by Age
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St. Mary Parish, Louisiana Employment by Race
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St. Mary Parish, Louisiana Employment by Education
Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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95.96%
Native Born
4.04%
Foreign Born
2.76%
Non Citizen
1.28%
Naturalized
Place of Birth
95.96% of St. Mary Parish, Louisiana residents were born in the United States, with 85.80% having been born in Louisiana. 2.76% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
St. Mary Parish, Louisiana Place of Birth
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990