What is the cost of living in Marathon, FL?
According to the most recent data on the cost of living, Marathon has an overall cost of living index of 145, which is 1.4x higher than the national index of 100.
Compared to Florida, Marathon has a cost of living index that's 1.4x higher than Florida's index of 104.
The standard of living in Marathon ranks as #441 most affordable out of the 462 places we measured in Florida. By definition, that implies Marathon ranks as the #21 most expensive place in the Sunshine State.
For more reading on life in Marathon, check out:
Marathon Cost Of Living Vs. Florida
Six factors go into calculating the cost of living index in Marathon. Here is how it fares on each of the criteria:
The Services index in Marathon is 102.
The Groceries index in Marathon is 105.
The Health index in Marathon is 246.
The Housing index in Marathon is 107.
The Transportation index in Marathon is 115.
The Utilities index in Marathon is 105.
| Living Expense | Marathon | Florida | National Average |
|---|---|---|---|
| Overall | 145 | 104 | 100 |
| Services | 102 | 101 | 100 |
| Groceries | 105 | 105 | 100 |
| Health | 246 | 99 | 100 |
| Housing | 107 | 104 | 100 |
| Transportation | 115 | 109 | 100 |
| Utilities | 105 | 105 | 100 |
Marathon Cost Of Living Compared To Florida Averages
Index where 100 = national average. Source: cost-of-living index 2026.
For more reading on cost of living around Florida, check out:
Protect your home budget Compare home warranties in Marathon Get matched →Source: Cost-of-living index 2026, normalized to US average = 100
Marathon, FL Housing Cost Breakdown
Housing swings affordability the most between places in Florida, so we broke down housing costs into more detail. Home and income data comes from the most recent US Census ACS 2020-2024. The key points are:
The Median Home Value in Marathon is $825,706.
The Median Rent in Marathon is $1,633.
The Median Income in Marathon is $89,355.
The Home Value To Income in Marathon is 9.2x.
The Rent To Monthly Income in Marathon is 0.22x.
Marathon, FL Costs By Category
Detailed Marathon Services costs vs. Florida
Detailed Marathon Groceries costs vs. Florida
Detailed Marathon Health costs vs. Florida
Detailed Marathon Transportation costs vs. Florida
Marathon SnackAbility
Cost Of Living In Cities Around Marathon
The cost of living varies in the cities and towns around Marathon. Here's a quick look at the cost of living in the most populous nearby places:
Key West, FL has a cost of living index of 174, 1.2x Marathon.
Key Largo, FL has a cost of living index of 143, 1.0x Marathon.
| City | Population | Cost Of Living | Vs. Marathon |
|---|---|---|---|
| Key West, FL | 25,720 | 174 | 1.2x |
| Key Largo, FL | 13,026 | 143 | 1.0x |
