Trivia

William Hanna wanted to do a family-style series, but he and Joseph Barbera couldn't agree on the setting or the costuming. Suddenly, Hanna exclaimed, "Let's do it in a caveman setting! They won't wear clothes, they'll just wear animal skins!" After that great idea everything from then on "perfectly fell into its place."

The imminent birth of Pebbles was a major worldwide sensation. TV networks around the world held viewer contests to pick names, weights, sexes, and other aspects of the birth. The night that Wilma told Fred she was pregnant (January 25, 1963), the end of the show featured a voiceover where a narrator said, "That's right, folks, the Flintstones ARE going to have a baby, and you can win a trip around the world!" The contest was to pick Pebbles' birth weight, and the winner, a Florida butcher, did receive a round the world trip plus $2,000 spending cash. William Hanna & Joseph Barbera appeared live on the March 8 show to announce the winner (Pebbles was born on the February 22 show.) Of course, this voiceover has been removed from subsequent airings since that night.

Fred and Wilma Flintstone were the first animated married couple ever shown on American television in the same bed together. They have been mistaken as the first couple ever shown in bed together on any American TV show, but that title goes to Mary Kay and Johnny (1947).

To capitalize on the then-current craze of "ghoul comedies," such as The Addams Family (1964) and The Munsters (1964), the Gruesomes (Weirdly, his wife Creepella and their son Gobby) were introduced in the fifth season as the Flintstones' newest neighbors. But they appeared just twice. They were in The Gruesomes (1964) and The Hatrocks and the Gruesomes (1965).

The Flintstones had three addresses during the series' six seasons run: 222 Rocky Way, 345 Stonecave Road, and then 301 Cobblestone Way. The final ("official") address given was 301 Cobblestone Way, Bedrock 70777. (70777 is the real ZIP code for Slaughter, Louisiana.)