| Total number led homes in Merrimac, by type |  | 
| Total Home Population: | 1,028 | 
| Population of Family homes: | 426 | 
| Population of 15 to 24 year olds: | 34 | 
| Population of 25 to 34 year olds: | 79 | 
| Population of 35 to 44 year olds: | 75 | 
| Population of 45 to 54 year olds: | 81 | 
| Population of 55 to 59 year olds: | 28 | 
| Population of 60 to 64 year olds: | 23 | 
| Population of 65 to 74 year olds: | 47 | 
| Population of 75 to 84 year olds: | 48 | 
| Population of 85 year olds and over: | 11 | 
| Population of Nonfamily Homes: | 602 | 
| Population of 15 to 24 year olds: | 68 | 
| Population of 25 to 34 year olds: | 74 | 
| Population of 35 to 44 year olds: | 48 | 
| Population of 45 to 54 year olds: | 70 | 
| Population of 55 to 59 year olds: | 42 | 
| Population of 60 to 64 year olds: | 38 | 
| Population of 65 to 74 year olds: | 76 | 
| Population of 75 to 84 year olds: | 90 | 
| Population of 85 year olds and over: | 96 |