Population 211 · Census ACS 2020–24
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Population and households in Jefferson Island
Household size in Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 2.95 | 2.66 | 2.68 |
| 2010–14 | 2.82 | 2.64 | 2.73 |
| 2015–19 | 2.56 | 2.64 | 2.71 |
| 2020–24 | 2.88 | 2.59 | 2.65 |
| Change | −0.07 | −0.07 | −0.03 |
Households in Jefferson Island average 2.88 people, above the national 2.65, so families with children are more common here.
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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 35.8 | 36.8 | 37.7 |
| 2010–14 | 39.9 | 37.4 | 38.6 |
| 2015–19 | 39.9 | 38.3 | 39.6 |
| 2020–24 | 33.1 | 39.0 | 40.1 |
| Change | −2.7 | +2.2 | +2.3 |
With a median age of just 33.1, Jefferson Island is far younger than the country as a whole (40.1), a population that tilts toward young families with children. The median age has dropped from 35.8 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 12.6% | 14.7% | 12.3% |
| 2010–14 | 14.3% | 15.1% | 12.3% |
| 2015–19 | 14.2% | 14.1% | 11.6% |
| 2020–24 | 36.6% | 15.2% | 11.6% |
| Change | +24.0 pts | +0.5 pts | −0.6 pts |
Single-parent households are common in Jefferson Island: 36.6% of all households, against 11.6% nationally.
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 Jefferson Island
Renters in Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 12.8% | 31.8% | 33.3% |
| 2010–14 | 30.6% | 33.7% | 35.6% |
| 2015–19 | 20.7% | 34.4% | 36.0% |
| 2020–24 | 17.3% | 32.6% | 34.8% |
| Change | +4.5 pts | +0.9 pts | +1.5 pts |
Only 17.3% of households in Jefferson Island rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 68.1% have no mortgage at all, well above the national share of 39.8%.
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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 18.8% | 13.9% | 11.4% |
| 2010–14 | 12.4% | 13.1% | 11.4% |
| 2015–19 | 10.4% | 15.1% | 11.1% |
| 2020–24 | 16.1% | 14.4% | 9.6% |
| Change | −2.7 pts | +0.5 pts | −1.8 pts |
Vacancy is high in Jefferson Island: 16.1% 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.
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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 1988 | 1977 | 1974 |
| 2010–14 | 1995 | 1979 | 1975 |
| 2015–19 | 1985 | 1981 | 1977 |
| 2020–24 | 1989 | 1984 | 1980 |
| Change | +1 | +7 | +6 |
Much of the housing in Jefferson Island is relatively new: half of its homes were built after 1989, compared with 1980 for the U.S. as a whole.
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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | $600 | $755 | $965 |
| 2010–14 | $649 | $831 | $1,040 |
| 2015–19 | $1,003 | $920 | $1,213 |
| 2020–24 | $1,046 | $1,122 | $1,571 |
| Change | +$446 | +$366 | +$606 |
A typical rental in Jefferson Island costs $1,046 a month with utilities, well below the national median of $1,571. Rent takes 43.3% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 Jefferson Island
Bachelor's degrees in Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 9.4% | 22.0% | 28.4% |
| 2010–14 | 8.0% | 22.8% | 29.6% |
| 2015–19 | 9.5% | 24.5% | 32.1% |
| 2020–24 | 19.1% | 27.5% | 35.6% |
| Change | +9.7 pts | +5.5 pts | +7.2 pts |
Fewer adults in Jefferson Island have a four-year degree than in the country as a whole: 19.1%, against 35.6% 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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 72.6% | 81.7% | 84.9% |
| 2010–14 | 70.1% | 83.3% | 86.1% |
| 2015–19 | 84.9% | 85.4% | 87.7% |
| 2020–24 | 76.2% | 87.2% | 89.3% |
| Change | +3.6 pts | +5.5 pts | +4.3 pts |
Nearly a quarter of adults in Jefferson Island never finished high school, well above the national share: only 76.2% have a diploma or equivalent, against 89.3% nationally.
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 Jefferson Island
| Period | Jefferson Island | Louisiana | U.S. |
|---|---|---|---|
| 2006–10 | 8.4% | 7.9% | 8.1% |
| 2010–14 | 0.9% | 8.7% | 9.4% |
| 2015–19 | 9.9% | 6.7% | 5.6% |
| 2020–24 | 1.4% | 6.5% | 5.4% |
| Change | −7.0 pts | −1.4 pts | −2.7 pts |
Unemployment in Jefferson Island has been low: just 1.4% of the labor force was out of work and looking, well below the national rate of 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
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).
Jefferson Island compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Jefferson Island | 2.88 | 33.1 | 36.6% | 17.3% | 16.1% | 1989 | $1,046 | 19.1% | 76.2% | 1.4% |
| Delcambre | 2.75 | 39.9 | 23.7% | 23.5% | 13.9% | 1987 | $922 | 10.6% | 82.4% | 3.6% |
| Lozes | 2.74 | 35.5 | 24.8% | 15.6% | 7.9% | 1998 | $1,194 | 16.9% | 81.9% | 6.7% |
| Erath | 2.58 | 39.2 | 18.5% | 23.3% | 15.3% | 1989 | $920 | 18.3% | 83.1% | 3.4% |
| Avery Island | 1.93 | 47.5 | 18.2% | 54.1% | 37.7% | 1969 | $597 | 10.3% | 82.2% | 9.0% |
| Cade | 3.08 | 37.7 | 12.3% | 10.9% | 9.8% | 2002 | $945 | 20.1% | 86.2% | 0.1% |
| New Iberia | 2.94 | 39.4 | 20.4% | 35.1% | 16.7% | 1983 | $1,009 | 18.3% | 83.4% | 8.3% |
| Youngsville | 2.80 | 36.6 | 15.6% | 13.1% | 9.8% | 2002 | $997 | 40.3% | 93.5% | 2.3% |
| Henry | 2.43 | 39.0 | 9.0% | 8.8% | 19.1% | 1985 | $645 | 18.9% | 75.8% | 3.2% |
| Abbeville | 2.57 | 41.2 | 18.9% | 34.4% | 18.6% | 1978 | $809 | 18.7% | 81.6% | 5.8% |
| Milton | 2.83 | 31.7 | 17.5% | 15.8% | 10.5% | 2003 | $1,270 | 36.9% | 98.6% | 4.6% |
All figures 2020–24.
Cities with similar populations: Weikert, PA · Cornwallis, WV · Costa, WV · Coveville, PA · Zag, KY · Cowcreek, KY · Yukon, MO · Youngers Store, VA · Crittenden, NY · Westwood, IA
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 Jefferson Island. 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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