NASCAR's headquarters are located in Daytona Beach, Florida, although it also maintains offices in four North Carolina cities: Charlotte, Mooresville, Concord, and Conover. Regional offices are also located in New York City, Los Angeles, Bentonville, Arkansas, and international offices in Mexico City and Toronto. Additionally, owing to its southern roots, all but a handful of NASCAR teams are still based in North Carolina, especially near Charlotte.

NASCAR is one of the most viewed professional sports in terms of television ratings in the United States. In fact, professional football is the only sport in the United States to hold more viewers than NASCAR. Internationally, NASCAR races are broadcast in over 150 countries. NASCAR holds 17 of the top 20 attended single-day sporting events in the world, and claims 75 million fans who purchase over $3 billion in annual licensed product sales. Many marketers consider NASCAR fans the most brand-loyal in all of sports and as a result, Fortune 500 companies sponsor NASCAR more than any other Motor Sport.

In the 1920s and 1930s, Daytona Beach became known as the place to set world land speed records, supplanting France and Belgium as the preferred location for land speed records, with 8 consecutive world records set between 1927 and 1935. After a historic race between Ransom Olds and Alexander Winton in 1903, the beach became a mecca for racing enthusiasts and fifteen records were set on what became the Daytona Beach road course between 1905 and 1935. By the time the Bonneville Salt Flats became the premier location for pursuit of land speed records, in 1936, Daytona beach had become synonymous with fast cars. Drivers raced on a 4.1-mile (6.6 km) course, consisting of a 1.5 to 2-mile (3.2 km) stretch of beach as one straightaway, and a narrow blacktop beachfront highway, A1A, as the other. The two straights were connected by 2 tight, deeply rutted and sand covered turns at each end.

Stock car racing in the United States has its origins in bootlegging during Prohibition, when drivers ran bootleg whiskey made primarily in the Appalachian region of the United States. Bootleggers needed to distribute their illicit products, and they typically used small, fast vehicles to better evade the police. Many of the drivers would modify their cars for speed and handling, as well as increased cargo capacity, and some of them came to love the fast-paced driving down twisty mountain roads.

The repeal of Prohibition in 1933 dried up some of their business, but by then Southerners had developed a taste for moonshine, and a number of the drivers continued "runnin' shine," this time evading the "revenuers" who were attempting to tax their operations. The cars continued to improve, and by the late 1940s, races featuring these cars were being run for pride and profit. These races were popular entertainment in the rural Southern United States, and they are most closely associated with the Wilkes County region of North Carolina. Most races in those days were of modified cars. Street vehicles were lightened and reinforced.

Mechanic William France, Sr., moved to Daytona Beach, Florida, from Washington, DC, in 1935 to escape the Great Depression. He was familiar with the history of the area from the land speed record attempts. France entered the 1936 Daytona event, finishing fifth. He took over running the course in 1938. He promoted a few races before World War II.

France had the notion that people would enjoy watching "stock cars" race. Drivers were frequently victimized by unscrupulous promoters who would leave events with all the money before drivers were paid. In 1947, he decided this racing would not grow without a formal sanctioning organization, standardized rules, regular schedule, and an organized championship. On December 14, 1947 France began talks with other influential racers and promoters at the Ebony Bar at the Streamline Hotel at Daytona Beach, Florida, that ended with the formation of NASCAR on February 21, 1948.

The first Commissioner of NASCAR was Erwin "Cannonball" Baker. A former stock car, motorcycle, and open-wheel racer who competed in the Indianapolis 500 and set over one hundred land speed records. Baker earned most of his fame for his transcontinental speed runs. Baker would prove a car's worth by driving it from New York to Los Angeles. After his death, the famous transcontinental race the 'Cannonball Run' and the film that was inspired by it were both named in his honor. Baker is enshrined in the Automotive Hall of Fame, the Motorcycle Hall of Fame, and the Indianapolis Motor Speedway Hall of Fame. This level of honor and success in each diverse racing association earned Baker the title of "King of the Road".

In the early 1950s the United States Navy stationed Bill France, Jr., at the Moffett Federal Airfield in northern California. His father asked him to look up Bob Barkhimer in San Jose, California. Barkhimer was a star of midget car racing from the World War II era, and later ran about 22 different speedways as the head of the California Stock Car Racing Association. Young Bill developed a relationship with Bob Barkhimer and his partner, Margo Burke. He went to events with them, stayed weekends with them and generally became very familiar with racing on the west coast. "Barky", as he was called by his friends, journeyed to Daytona Beach and met with Bill France, Sr. In the spring of 1954, NASCAR became a stock car sanctioning body on the Pacific Coast under Barky.

On March 8, 1936, a collection of drivers gathered at Daytona Beach, Florida. The drivers brought coupes. hardtops, convertibles, and sports cars to compete in an event to determine the fastest cars, and best drivers. Throughout the race, the heavier cars got bogged down in the sand, while the lightweight Fords navigated the ruts of the course, eventually claiming the top 6 finishes for the race. Of the 27 cars that started the event, only 10 managed to survive the ordeal, as officials halted the event 10 miles short of the scheduled 250 mile distance. Driver Milt Marion was declared the winner, and a young Bill France placed 5th at the end of the day.