| Martinsville City | |||
| 2000 Population Age 5 & Under | |||
| Total Persons | Total Persons | % Persons | |
| Census Tract | Under Age 18 | Age 5 & Under | Age 5 & Under |
| 1 | 803 | 255 | 31.8% |
| 2 | 728 | 228 | 31.3% |
| 3 | 536 | 170 | 31.7% |
| 4 | 726 | 223 | 30.7% |
| 5 | 685 | 175 | 25.5% |
| City Totals | 3,478 | 1,051 | 30.2% |
| Source: 2000 Census of Population & Housing, U.S. Census Bureau. | |||