Population 21,417 · Census ACS 2020–24
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Population and households in St. Marys
Household size in St. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 2.78 | 2.70 | 2.68 |
| 2010–14 | 2.70 | 2.77 | 2.73 |
| 2015–19 | 2.64 | 2.75 | 2.71 |
| 2020–24 | 2.69 | 2.73 | 2.65 |
| Change | −0.09 | +0.03 | −0.03 |
At 2.69 people per household, St. Marys sits close to the national average of 2.65. Household size has edged down from 2.78 in 2006–10, in line with the national trend. The biggest households, usually families with children, are concentrated in the northwest.
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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 32.6 | 36.0 | 37.7 |
| 2010–14 | 32.7 | 36.9 | 38.6 |
| 2015–19 | 36.8 | 38.1 | 39.6 |
| 2020–24 | 39.0 | 38.6 | 40.1 |
| Change | +6.3 | +2.6 | +2.3 |
Half of the people in St. Marys are younger than 39.0 and half are older, close to the national median of 40.1. The median age has climbed from 32.6 in 2006–10, in line with the national trend. Residents skew youngest in the northwest and oldest in the south.
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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 10.7% | 13.8% | 12.3% |
| 2010–14 | 10.9% | 13.8% | 12.3% |
| 2015–19 | 14.3% | 13.0% | 11.6% |
| 2020–24 | 15.0% | 13.4% | 11.6% |
| Change | +4.4 pts | −0.4 pts | −0.6 pts |
Single-parent households are common in St. Marys: 15.0% of all households, against 11.6% nationally. The single-parent share is up 4.4 points from 2006–10, even as the national share fell.
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. Marys
Renters in St. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 35.6% | 32.8% | 33.3% |
| 2010–14 | 47.7% | 35.8% | 35.6% |
| 2015–19 | 40.6% | 36.7% | 36.0% |
| 2020–24 | 36.4% | 34.3% | 34.8% |
| Change | +0.8 pts | +1.5 pts | +1.5 pts |
More than a third of households in St. Marys rent their homes (36.4%), close to the national share of 34.8%. Among owners, 32.7% have paid off their mortgages, below the national share of 39.8%. Renting is most common in the north and least common in the west. The renter share has edged up 0.8 points since 2006–10, 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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 14.7% | 13.1% | 11.4% |
| 2010–14 | 11.4% | 13.2% | 11.4% |
| 2015–19 | 11.5% | 11.6% | 11.1% |
| 2020–24 | 8.5% | 10.3% | 9.6% |
| Change | −6.2 pts | −2.8 pts | −1.8 pts |
Vacancy in St. Marys is close to the national rate: 8.5% of homes are empty, against 9.6%. The rate is lower than in Georgia overall (10.3%). Since 2006–10, vacancy has fallen 6.2 points, a much bigger shift than nationally.
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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 1992 | 1985 | 1974 |
| 2010–14 | 1991 | 1987 | 1975 |
| 2015–19 | 1991 | 1987 | 1977 |
| 2020–24 | 1993 | 1991 | 1980 |
| Change | +1 | +6 | +6 |
St. Marys has newer housing than the country as a whole: the median home was built in 1993, versus 1980 nationally. Georgia as a whole looks much the same. Newer construction is concentrated in the northwest, while the south has the oldest housing.
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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | $918 | $910 | $965 |
| 2010–14 | $1,043 | $977 | $1,040 |
| 2015–19 | $1,113 | $1,112 | $1,213 |
| 2020–24 | $1,294 | $1,520 | $1,571 |
| Change | +$376 | +$609 | +$606 |
A typical rental in St. Marys costs $1,294 a month with utilities, below the national median of $1,571. Rents are up $376 a month from 2006–10, a 41% rise, a slower climb than the nation's. Rent takes 32.6% of the typical renter's income, just over the 30% mark often used to define affordable rent. Renters on a budget will find the lowest rents in the center; the highest are in the west.
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. Marys
Bachelor's degrees in St. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 24.2% | 28.1% | 28.4% |
| 2010–14 | 24.0% | 28.9% | 29.6% |
| 2015–19 | 24.9% | 31.4% | 32.1% |
| 2020–24 | 26.0% | 35.1% | 35.6% |
| Change | +1.9 pts | +7.0 pts | +7.2 pts |
Just over a quarter of adults 25 and older in St. Marys (26.0%) have a bachelor's degree or higher, below the national share of 35.6%. The share with a degree is up 1.9 points from 2006–10, a smaller shift than nationally. College graduates are most concentrated in the west and least in the center.
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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 92.9% | 84.1% | 84.9% |
| 2010–14 | 93.8% | 85.4% | 86.1% |
| 2015–19 | 93.3% | 87.2% | 87.7% |
| 2020–24 | 93.0% | 89.2% | 89.3% |
| Change | +0.1 pts | +5.0 pts | +4.3 pts |
Just over nine in ten adults in St. Marys have finished high school (93.0%), above the national rate of 89.3%. St. Marys has a higher share of high school graduates than at least four in five Georgia cities.
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. Marys
| Period | St. Marys | Georgia | U.S. |
|---|---|---|---|
| 2006–10 | 9.2% | 8.8% | 8.1% |
| 2010–14 | 11.0% | 10.7% | 9.4% |
| 2015–19 | 8.5% | 5.8% | 5.6% |
| 2020–24 | 8.7% | 5.2% | 5.4% |
| Change | −0.4 pts | −3.6 pts | −2.7 pts |
Finding work has been harder in St. Marys: 8.7% of the labor force was out of work and looking, well above the national rate of 5.4%. Of the 282 Georgia cities with 5,000+ people, only 17 have higher unemployment. 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).
St. Marys 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| St. Marys | 2.69 | 39.0 | 15.0% | 36.4% | 8.5% | 1993 | $1,294 | 26.0% | 93.0% | 8.7% |
| Kings Bay | 2.70 | 22.8 | 9.4% | 92.6% | 13.0% | 1985 | $1,539 | 14.0% | 99.5% | 25.9% |
| Gross | 1.76 | 34.4 | 11.4% | 48.1% | 18.1% | 2018 | $1,947 | 28.5% | 98.3% | 0.6% |
| Kingsland | 2.60 | 36.1 | 15.1% | 32.1% | 8.3% | 1995 | $1,361 | 21.5% | 94.6% | 3.9% |
| Harrietts Bluff | 2.58 | 45.7 | 7.3% | 11.0% | 7.5% | 1993 | $908 | 37.7% | 95.0% | 0.7% |
| Yulee | 2.79 | 39.2 | 11.5% | 19.3% | 11.1% | 2008 | $1,985 | 31.3% | 92.4% | 4.1% |
| Hero | 2.30 | 38.9 | 13.4% | 25.4% | 21.9% | 2011 | $2,195 | 26.1% | 93.3% | 3.3% |
| Fernandina Beach | 2.27 | 53.5 | 7.9% | 17.2% | 17.5% | 1997 | $1,793 | 51.2% | 96.0% | 5.0% |
| Nassau Village | 1.87 | 66.0 | 4.7% | 15.6% | 31.6% | 1990 | $1,400 | 66.5% | 96.6% | 7.9% |
| Lessie | 2.51 | 42.0 | 7.2% | 22.3% | 7.5% | 1987 | $1,377 | 21.6% | 90.5% | 2.0% |
| Evergreen | 2.46 | 42.5 | 9.8% | 19.9% | 12.2% | 1990 | $1,616 | 21.2% | 89.6% | 2.6% |
All figures 2020–24.
Cities with similar populations: Cherry Hill, NJ · Valley Center, CA · Valencia West, AZ · Copiague, NY · Connersville, IN · Coldwater, MI · Clarksville, IN · Clarksburg, WV · Choctaw, OK · Chino Valley, AZ
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. Marys. 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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