Population 162,176 · Census ACS 2020–24
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Population and households in Martin County
Household size in Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 2.53 | 2.63 | 2.68 |
| 2010–14 | 2.52 | 2.73 | 2.73 |
| 2015–19 | 2.50 | 2.75 | 2.71 |
| 2020–24 | 2.50 | 2.63 | 2.65 |
| Change | −0.02 | +0.00 | −0.03 |
Households in Martin County run a little small, averaging 2.50 people against 2.65 nationally, which usually means more singles and couples and fewer children. The biggest households, usually families with children, are concentrated in the southwest.
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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 48.5 | 40.8 | 37.7 |
| 2010–14 | 50.0 | 42.0 | 38.6 |
| 2015–19 | 51.9 | 43.0 | 39.6 |
| 2020–24 | 51.1 | 43.5 | 40.1 |
| Change | +2.6 | +2.7 | +2.3 |
Martin County skews older: half of its residents are older than 51.1, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. The median age has climbed from 48.5 in 2006–10, in line with the national trend.
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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 8.7% | 12.4% | 12.3% |
| 2010–14 | 7.3% | 12.2% | 12.3% |
| 2015–19 | 8.1% | 11.5% | 11.6% |
| 2020–24 | 7.4% | 11.4% | 11.6% |
| Change | −1.3 pts | −1.0 pts | −0.6 pts |
Single-parent households are relatively rare in Martin County: 7.4% of households, against 11.6% nationally. Since 2006–10, the single-parent share has edged down 1.3 points, as it has nationally. Few Florida counties have a lower share of single-parent households: only five of 67.
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 Martin County
Renters in Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 20.5% | 30.3% | 33.3% |
| 2010–14 | 23.8% | 33.9% | 35.6% |
| 2015–19 | 21.9% | 34.6% | 36.0% |
| 2020–24 | 20.4% | 32.4% | 34.8% |
| Change | −0.1 pts | +2.1 pts | +1.5 pts |
Martin County is largely a place of homeowners: only 20.4% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 50.9% have no mortgage at all, well above the national share of 39.8%. Rentals cluster in the north; owners are most common in the west.
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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 21.3% | 17.2% | 11.4% |
| 2010–14 | 19.8% | 17.6% | 11.4% |
| 2015–19 | 17.4% | 15.4% | 11.1% |
| 2020–24 | 17.1% | 12.5% | 9.6% |
| Change | −4.2 pts | −4.8 pts | −1.8 pts |
Vacancy is high in Martin County: 17.1% 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. Vacancy is down 4.2 points from 2006–10, in line with the national trend.
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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1984 | 1974 |
| 2010–14 | 1986 | 1985 | 1975 |
| 2015–19 | 1986 | 1986 | 1977 |
| 2020–24 | 1987 | 1989 | 1980 |
| Change | +2 | +5 | +6 |
The housing in Martin County is younger than the country's: half of it was built after 1987, against 1980 nationally. That is in line with the rest of Florida. Compared with other Florida counties, though, Martin County has older homes than most.
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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | $1,168 | $1,092 | $965 |
| 2010–14 | $1,069 | $1,123 | $1,040 |
| 2015–19 | $1,271 | $1,323 | $1,213 |
| 2020–24 | $1,757 | $1,816 | $1,571 |
| Change | +$589 | +$724 | +$606 |
Rent in Martin County runs $1,757 a month at the median, utilities included, above the U.S. median of $1,571. Rent has climbed $589 a month since 2006–10, up 50%, a slower climb than the nation's. The typical renter here spends 34.9% of household income on rent, 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 Martin County
Bachelor's degrees in Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 29.1% | 26.4% | 28.4% |
| 2010–14 | 30.8% | 27.0% | 29.6% |
| 2015–19 | 33.4% | 30.0% | 32.1% |
| 2020–24 | 36.9% | 34.6% | 35.6% |
| Change | +7.8 pts | +8.2 pts | +7.2 pts |
More than a third of adults 25 and older in Martin County (36.9%) hold at least a bachelor's degree, close to the national share of 35.6%. Since 2006–10, the share with a degree has risen 7.8 points, as it has nationally. College graduates are most concentrated in the northwest and least in the southwest.
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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 87.9% | 85.5% | 84.9% |
| 2010–14 | 88.6% | 86.5% | 86.1% |
| 2015–19 | 90.6% | 88.2% | 87.7% |
| 2020–24 | 92.2% | 90.0% | 89.3% |
| Change | +4.3 pts | +4.4 pts | +4.3 pts |
About nine in ten adults in Martin County have finished high school (92.2%), a bit above the national rate of 89.3%. The share with a diploma has risen 4.3 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 Martin County
| Period | Martin County | Florida | U.S. |
|---|---|---|---|
| 2006–10 | 9.3% | 8.9% | 8.1% |
| 2010–14 | 10.9% | 11.0% | 9.4% |
| 2015–19 | 4.5% | 5.7% | 5.6% |
| 2020–24 | 4.9% | 4.8% | 5.4% |
| Change | −4.4 pts | −4.1 pts | −2.7 pts |
At 4.9%, unemployment in Martin County is close to the national rate of 5.4%. Since 2006–10, unemployment has fallen 4.4 points, in line with the national trend. 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).
Martin County 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Martin County | 2.50 | 51.1 | 7.4% | 20.4% | 17.1% | 1987 | $1,757 | 36.9% | 92.2% | 4.9% |
| St. Lucie County | 2.75 | 45.3 | 13.0% | 21.4% | 11.6% | 1995 | $1,825 | 26.2% | 88.6% | 6.5% |
| Okeechobee County | 2.64 | 42.1 | 13.1% | 26.1% | 17.8% | 1989 | $1,105 | 15.5% | 79.4% | 4.9% |
| Palm Beach County | 2.67 | 45.8 | 11.8% | 29.9% | 13.5% | 1987 | $2,192 | 40.2% | 88.7% | 5.3% |
| Indian River County | 2.46 | 53.1 | 9.1% | 19.9% | 15.5% | 1993 | $1,650 | 32.9% | 91.7% | 4.5% |
| Glades County | 2.52 | 48.6 | 11.9% | 14.9% | 25.0% | 1993 | $892 | 14.0% | 76.6% | 5.6% |
| Hendry County | 2.92 | 36.8 | 19.8% | 26.4% | 11.7% | 1993 | $1,172 | 13.7% | 68.0% | 4.1% |
| Broward County | 2.76 | 42.2 | 12.8% | 36.4% | 10.8% | 1982 | $2,116 | 36.9% | 90.4% | 5.3% |
| Highlands County | 2.28 | 52.1 | 9.0% | 21.4% | 18.3% | 1986 | $1,160 | 20.7% | 86.3% | 6.8% |
| DeSoto County | 2.64 | 45.3 | 13.3% | 27.5% | 18.2% | 1988 | $918 | 11.7% | 73.9% | 9.7% |
| Hardee County | 3.12 | 36.6 | 17.4% | 28.6% | 16.0% | 1988 | $985 | 12.1% | 75.6% | 4.8% |
All figures 2020–24.
Counties with similar populations: Beaver County, PA · Washington County, MD · Madera County, CA · Johnson County, IN · Johnson County, IA · Indian River County, FL · Houston County, GA · Hampshire County, MA · Greene County, OH · Franklin County, PA
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 Martin County. 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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