The 1978-1979 television season is the 33rd network season in United States television history. It began on Monday, September 18, 1978 and ended on Sunday, April 29, 1979. The effective start date of the 1978-79 season for the purposes of audience measurement was Monday, September 18, 1978 through Sunday, September 16, 1979.
Universe estimates used to calculate a program or network's rating within that particular demographic for the 1978-79 TV season. See the extended 1978-1979 universe estimates.
| Demographic | Population | Share |
|---|---|---|
| Households | 74,500,000 | |
| Persons 2+ | 204,660,000 | |
| Persons 2-11 | 32,660,000 | 16.0% |
| Persons 6-11 | 20,650,000 | 10.1% |
| Persons 12-17 | 23,840,000 | 11.7% |
| Persons 18+ | 148,160,000 | 72.4% |
| Persons 18-34 | 59,680,000 | 29.2% |
| Persons 18-49 | 94,480,000 | 46.2% |
| Persons 25-54 | 79,060,000 | 38.6% |
| Persons 35+ | 88,480,000 | 43.2% |