As of 2025 the population of Martin County is 5,302. The population is expected to shrink to 5,285 by 2030 - a growth rate of -0.06%.
The median age of Martin County residents is 37.
The diversity index of Martin County is 75.6, meaning that there is a 76% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
The average household income in Martin County is $103,983 and projected to be $113,236 in 2030. Per capita income is $37,659, projected to be $41,699 in 2030. 2.45% of households – 130 – have an income of $200,000 or higher. Average net worth is $874,037 and the average disposable income is $83,048.
There are 2,177 housing units in Martin County; 1,433 are owner-occupied, 487 are rented, and 257 are vacant. The average home value is $268,644, with 223 homes built in 2010 or later, and 124 built in 1939 or earlier.
There are 189 businesses in Martin County, employing 1,691 workers and pulling from a labor force of 2,284 age 16 and above. 945 workers commute into Martin County from outside the county or state. Key industries for the area include:
1,339 residents both live and work in/around Martin County. The average travel time is 22.0 minutes. 22.26% people have a commute of less than 5 minutes while 5.3% commute 90 minutes or more each way. Of commuters, 1,883 drive alone, 282 carpool, and 0 take public transportation. 94 use other modes of transport such as motorcycle, bicycle, walking, etc. 25 residents work from home.
1,448 members of the workforce hold a high school diploma or GED. 216 have associates degrees, 437 have bachelor’s degrees, and 211 hold a graduate or professional degree.
