Bedrock is a fictional prehistoric city which is home to the citizens (known as Bedrockians or Bedrockers) and characters of the original series, The Flintstones and the rest of the franchise.
Size
Though the first two seasons' opening credits of the original series stated the town's population as only 2,500 people (though it did swell to 30,000 in a dream sequence in the episode of the sixth season, "Rip Van Flintstone"), Bedrock was generally presented as a medium-sized American city, with all the amenities of such, but with a "prehistoric" twist. For instance, dinosaurs were seen being used as cranes at the town's most well-known employer, "Slate Rock and Gravel Company" (also known as "Rockhead and Quarry Cave Construction Company" in the series' earlier episodes).
Location
Bedrock is the county seat of fictional Cobblestone County, and stated in the episode of the first-season, "The Tycoon" to be 200 feet below sea level; presumably, the nearby town of Red Rock was located in Cobblestone County as well. However, no further information was ever given for any of these locations, besides being set in a prehistoric version of the United States. Near Bedrock lies Granitetown, given in one episode as the one-time childhood hometown of Barney Rubble and Fred's boss, Mr. Slate.
Mainly Features
The climate of Bedrock is somewhat undetermined, since different Flintstones episodes and media have portrayed it differently. Palm trees and cycads are common yard trees, suggesting a warm climate. However, episodes and movies set at Christmas time depicted plenty of snow. Sometimes the wilderness on Bedrock's outskirts appears to be desert-like, whereas at other times it resembles a tropical/subtropical jungle (as shown in the opening scenes of the 1966 animated film, The Man Called Flintstone). The people of Bedrock tend to be fairly friendly, if not without having various quirks.
Law and Government
The city's police department helps protect the residents; for a period of time, Fred and Barney were members as part-time police officers along with their partner and brief pet, Shmoo in the spin-off, The Flintstone Comedy Show. Also, their headquarters is the Bedrock Police Station.
Bedrock has also been shown as having a volunteer fire department, although the episode in which the volunteer fire department (just as introduced in the episode, "Arthur Quarry's Dance Class") was introduced suggests the uselessness of such a service in a city of stone buildings; instead, its members use it as an excuse to create a social club. However several other episodes feature a more traditional full-time firefighting service. Also located near Bedrock is Camp Millstone Army Base, where Fred and his best friend Barney Rubble were stationed after they were mistakenly inducted into the Army in the episode of the first season, "The Astra' Nuts".
Bedrock's city government played a role in the episode, "Mayor May Not", from The Pebbles and Bamm-Bamm Show where Pebbles became the city's temporary student mayor for a week.
Regarding health care, Bedrock had the Rockopedic Hospital, where Pebbles was born.