Population 51,353 · Census ACS 2020–24
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Population and households in St. Martin Parish
Household size in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 2.65 | 2.66 | 2.68 |
| 2010–14 | 2.78 | 2.64 | 2.73 |
| 2015–19 | 2.73 | 2.64 | 2.71 |
| 2020–24 | 2.77 | 2.59 | 2.65 |
| Change | +0.12 | −0.07 | −0.03 |
Households in St. Martin Parish average 2.77 people, a bit above the national 2.65, so families with children are somewhat more common here. Household size has climbed from 2.65 in 2006–10, even as the national average fell. Households are largest in the north and smallest in the south.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 36.7 | 36.8 | 37.7 |
| 2010–14 | 37.6 | 37.4 | 38.6 |
| 2015–19 | 38.7 | 38.3 | 39.6 |
| 2020–24 | 39.9 | 39.0 | 40.1 |
| Change | +3.2 | +2.2 | +2.3 |
Half of the people in St. Martin Parish are younger than 39.9 and half are older, close to the national median of 40.1. Since 2006–10, the median age has climbed from 36.7, in line with the national trend. Residents skew youngest in the southwest and oldest in the east.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 16.0% | 14.7% | 12.3% |
| 2010–14 | 14.2% | 15.1% | 12.3% |
| 2015–19 | 15.5% | 14.1% | 11.6% |
| 2020–24 | 17.8% | 15.2% | 11.6% |
| Change | +1.8 pts | +0.5 pts | −0.6 pts |
Single parents head just over one in six households in St. Martin Parish (17.8%), well above the national share of 11.6%. The single-parent share has risen 1.8 points since 2006–10, even as the national share fell. St. Martin Parish has a higher share of single-parent households than at least four in five Louisiana counties.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in St. Martin Parish
Renters in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 20.4% | 31.8% | 33.3% |
| 2010–14 | 20.4% | 33.7% | 35.6% |
| 2015–19 | 21.2% | 34.4% | 36.0% |
| 2020–24 | 22.3% | 32.6% | 34.8% |
| Change | +1.8 pts | +0.9 pts | +1.5 pts |
Only 22.3% of households in St. Martin Parish rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 55.3% have no mortgage at all, well above the national share of 39.8%. Renting is most common in the south and least common in the east. Since 2006–10, the renter share has risen 1.8 points, mirroring the country.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 10.7% | 13.9% | 11.4% |
| 2010–14 | 13.7% | 13.1% | 11.4% |
| 2015–19 | 15.4% | 15.1% | 11.1% |
| 2020–24 | 18.3% | 14.4% | 9.6% |
| Change | +7.6 pts | +0.5 pts | −1.8 pts |
Vacancy is high in St. Martin Parish: 18.3% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Since 2006–10, vacancy has risen 7.6 points, even as the national rate fell.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 1981 | 1977 | 1974 |
| 2010–14 | 1983 | 1979 | 1975 |
| 2015–19 | 1985 | 1981 | 1977 |
| 2020–24 | 1988 | 1984 | 1980 |
| Change | +7 | +7 | +6 |
St. Martin Parish has newer housing than the country as a whole: the median home was built in 1988, versus 1980 nationally. The median year built has moved up from 1981 in 2006–10, a sign of steady new building.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | $544 | $755 | $965 |
| 2010–14 | $652 | $831 | $1,040 |
| 2015–19 | $680 | $920 | $1,213 |
| 2020–24 | $861 | $1,122 | $1,571 |
| Change | +$317 | +$366 | +$606 |
A typical rental in St. Martin Parish costs $861 a month with utilities, well below the national median of $1,571. Rents are up $317 a month from 2006–10, a 58% rise, a slower climb than the nation's. Rent takes 29.4% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the west; the most affordable are in the center.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in St. Martin Parish
Bachelor's degrees in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 11.9% | 22.0% | 28.4% |
| 2010–14 | 14.2% | 22.8% | 29.6% |
| 2015–19 | 14.6% | 24.5% | 32.1% |
| 2020–24 | 18.9% | 27.5% | 35.6% |
| Change | +7.0 pts | +5.5 pts | +7.2 pts |
Fewer adults in St. Martin Parish have a four-year degree than in the country as a whole: 18.9%, against 35.6% nationally. The share with a degree has risen 7.0 points since 2006–10, as it has nationally.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 74.8% | 81.7% | 84.9% |
| 2010–14 | 77.6% | 83.3% | 86.1% |
| 2015–19 | 81.8% | 85.4% | 87.7% |
| 2020–24 | 83.5% | 87.2% | 89.3% |
| Change | +8.7 pts | +5.5 pts | +4.3 pts |
About one in six adults in St. Martin Parish never finished high school, well above the national share: only 83.5% have a diploma or equivalent, against 89.3% nationally. The share with a diploma has risen 8.7 points since 2006–10, in line with the national trend.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in St. Martin Parish
| Period | St. Martin Parish | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 7.3% | 7.9% | 8.1% |
| 2010–14 | 8.1% | 8.7% | 9.4% |
| 2015–19 | 7.9% | 6.7% | 5.6% |
| 2020–24 | 3.8% | 6.5% | 5.4% |
| Change | −3.5 pts | −1.4 pts | −2.7 pts |
Jobs have been easier to find in St. Martin Parish than nationally: unemployment was 3.8%, against 5.4%. Few Louisiana counties have lower unemployment: only five of 64. Unemployment has fallen 3.5 points since 2006–10, mirroring the country.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
St. Martin Parish compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| St. Martin Parish | 2.77 | 39.9 | 17.8% | 22.3% | 18.3% | 1988 | $861 | 18.9% | 83.5% | 3.8% |
| Lafayette Parish | 2.54 | 38.8 | 14.2% | 34.5% | 12.4% | 1991 | $1,092 | 36.8% | 90.0% | 4.6% |
| Iberia Parish | 2.87 | 39.8 | 20.6% | 32.7% | 17.3% | 1982 | $996 | 17.6% | 82.3% | 7.6% |
| Vermilion Parish | 2.69 | 39.8 | 16.0% | 26.6% | 16.1% | 1985 | $868 | 18.5% | 83.7% | 4.9% |
| St. Landry Parish | 2.64 | 38.6 | 22.0% | 29.9% | 16.0% | 1983 | $872 | 15.3% | 82.7% | 7.8% |
| Acadia Parish | 2.78 | 37.8 | 15.1% | 33.0% | 15.1% | 1982 | $764 | 14.9% | 81.2% | 7.9% |
| Iberville Parish | 2.44 | 40.3 | 18.9% | 24.9% | 16.4% | 1988 | $877 | 18.5% | 83.9% | 6.7% |
| Pointe Coupee Parish | 2.54 | 43.2 | 11.7% | 20.0% | 20.7% | 1985 | $779 | 19.7% | 84.9% | 6.8% |
| West Baton Rouge Parish | 2.52 | 37.4 | 9.9% | 23.2% | 8.8% | 1993 | $1,070 | 24.9% | 91.7% | 6.2% |
| Evangeline Parish | 2.59 | 38.4 | 20.9% | 33.8% | 14.8% | 1982 | $778 | 15.0% | 76.2% | 8.0% |
| St. Mary Parish | 2.62 | 39.7 | 17.4% | 31.4% | 16.2% | 1977 | $884 | 13.7% | 79.7% | 4.9% |
All figures 2020–24.
Counties with similar populations: Culpeper County, VA · Vermilion Parish, LA · Vernon Parish, LA · Waller County, TX · Warren County, IA · Dickson County, TN · Delaware County, NY · DeKalb County, IN · Dearborn County, IN · Davie County, NC
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up St. Martin Parish. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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