The demographic universe estimates for the 1999-2000 television season as defined and published by Nielsen Media Research.
| Demographic | Population | Share |
|---|---|---|
| Households | 100,800,000 | |
| Persons 2+ | 259,930,000 | |
| Persons 2-11 | 39,800,000 | 15.3% |
| Persons 6-11 | 24,230,000 | 9.32% |
| Persons 12-17 | 22,450,000 | 8.64% |
| Persons 18+ | 197,680,000 | 76.1% |
| Persons 18-34 | 61,120,000 | 23.5% |
| Persons 18-49 | 124,480,000 | 47.9% |
| Persons 25-54 | 118,020,000 | 45.4% |
| Persons 35+ | 136,560,000 | 52.5% |
| Persons 35-64 | 104,290,000 | 40.1% |
| Persons 50+ | 73,190,000 | 28.2% |
| Persons 50-54 | 17,280,000 | 6.65% |
| Persons 55+ | 55,910,000 | 21.5% |
| Males 2-11 | 20,350,000 | 7.83% |
| Males 12-17 | 11,440,000 | 4.40% |
| Males 18-34 | 30,530,000 | 11.8% |
| Males 18-49 | 61,550,000 | 23.7% |
| Males 25-54 | 58,100,000 | 22.4% |
| Males 35-64 | 50,710,000 | 19.5% |
| Males 55+ | 24,710,000 | 9.51% |
| Females 2-11 | 19,450,000 | 7.48% |
| Females 12-17 | 11,010,000 | 4.24% |
| Females 18-34 | 30,590,000 | 11.8% |
| Females 18-49 | 62,930,000 | 24.2% |
| Females 25-54 | 59,920,000 | 23.1% |
| Females 35-64 | 53,580,000 | 20.6% |
| Females 55+ | 31,200,000 | 12.0% |