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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Marathon. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Marathon, Florida is approximatly 10255.
Racial profile for Marathon:
| White : | 9341 |
| Black : | 477 |
| Native American : | 37 |
| Asian : | 49 |
| Pacific Islander : | 4 |
| Other : | 205 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Marathon, Florida :
| 18 - 19 : | 85 |
| 20 : | 56 |
| 21 : | 53 |
| 22 - 24 : | 146 |
| 25 - 29 : | 272 |
| 30 - 34 : | 350 |
| 35 - 39 : | 436 |
| 40 - 44 : | 482 |
| 45 - 49 : | 497 |
| 50 - 54 : | 500 |
| 55 - 59 : | 408 |
| 60 - 61 : | 151 |
| 62 - 64 : | 209 |
| 65 - 66 : | 127 |
| 67 - 69 : | 147 |
| 70 - 74 : | 261 |
| 75 - 79 : | 155 |
| 80 - 84 : | 92 |
| 85+ : | 50 |
Population by age for females in Marathon, Florida :
| 18 - 19 : | 95 |
| 20 : | 32 |
| 21 : | 45 |
| 22 - 24 : | 117 |
| 25 - 29 : | 253 |
| 30 - 34 : | 325 |
| 35 - 39 : | 368 |
| 40 - 44 : | 449 |
| 45 - 49 : | 484 |
| 50 - 54 : | 432 |
| 55 - 59 : | 340 |
| 60 - 61 : | 112 |
| 62 - 64 : | 146 |
| 65 - 66 : | 84 |
| 67 - 69 : | 138 |
| 70 - 74 : | 219 |
| 75 - 79 : | 179 |
| 80 - 84 : | 113 |
| 85+ : | 77 |
The total amount of households in Marathon, Florida is 4597. With 10072 people of the population in these households. The average household size is 2.19.
7335 people in Marathon, Florida are part of a family. The average family size in Marathon is 2.68 people.
There are 1099 married families in Marathon, Florida.
Number of married families by number of members in the family :
| 0 - 2 : | 165 | 3 - 4 : | 103 | 5 : | 57 | 6 - 11 : | 389 | 12 - 17 : | 385 |