Martin County, Florida Facts
| Facts | |
| State | Florida |
| Land area | 543.5 square miles |
| Population Density | 269.2 persons per square mile. |
| Population | |
| Population (2013) | 151,263 |
| Population change | 3.4% | Under 5 years of age | 4.1% |
| Under 18 | 17.1% |
| 65 and over | 28.8% |
| Females | 50.4% |
| White | 90.3 |
| Hispanic or Latino of any race | 13 |
| Asian | 1.2% |
| Two or more races | 1.3% |
| Black or African American | 5.9% |
| Native American | 1.1% |
| Pacific Islander | 0.2% |
| Had graduated from high school | 89% |
| Had a bachelor’s degree or higher | 29.9% |
| Veterans | 16,999 |
| Households and Housing | |
| Households | 59,891 |
| Persons per household | 2.4 |
| Living in the same house for one year or more | 85.7% |
| Median household income | $49,846 |
| The per capita income | $34,057 |
| Live below the poverty line. | 13% |
| housing units | 78,150 |
| Multi-unit structures | 29% |
| The median value of owner-occupied housing | $197,900 |
| Residents owning their homes. | 76.2% |
| Business Facts | |
| Total number of firms | 18,387 |
| Women-owned firms | 27.6% |
| Asian-owned firms | 2.2% |
| Hispanic-owned firms | 5.8% |
| Black-owned firms | 1.7% |
| Native American-owned firms | 0% |
| Pacific Islander-owned firms | 0% |
| Retail sales | $2,470,433 |
| Retail sales per capita | $17,790 |
| Manufacturers shipments | $856,090 |
| Merchant wholesaler sales | $741,647 |