As of 2011 Indian Census, Balasinor had a total population of 39,330, of which 20,282 were males and 19,048 were females. Population within the age group of 0 to 6 years was 4,946. The total number of literates in Balasinor was 30,314, which constituted 77.1% of the population with male literacy of 81.3% and female literacy of 72.5%. The effective literacy rate of 7+ population of Balasinor was 88.2%, of which male literacy rate was 93.8% and female literacy rate was 82.2%. The Scheduled Castes and Scheduled Tribes population was 3,603 and 331 respectively. Balasinor had 7591 households in 2011. As of the 2001 Indian census, Balasinor had a population of 33,704. It had a literacy rate of 70.5% and a ratio of 940 women for every 1000 men. 12.6% of the population was between the ages 0 to 6. According to Chambers's Concise Gazetteer Of The World from 1914, the population of Balasinor town was approximately 9,000 at the time.
In the early 1980s, palaeontologists stumbled upon dinosaur bones and fossils during a regular geological survey of this mineral-rich area. They found dinosaur egg hatcheries and fossils of at least 13 species of which the most important discovery was that of a carnivorous abelisaurid named Rajasurus narmadensis which lived in the Late Cretaceous period. The find sent ripples of excitement through neighbouring villages and many residents picked up fossilised eggs, brought them home and worshipped them. Since then excavations have thrown up a veritable trove of dinosaur remains—eggs, bones, a skeleton which is now kept in a Calcutta museum—bringing hordes of scientists and tourists to Balasinor. Piecing together the evidence in Raiyoli, researchers now believe that Gujarat is home to one of the largest clutch of dinosaur hatcheries in the world. At least 13 species of dinosaurs lived here, possibly for more than 100 million years until their extinction some 66 million years ago. The soft soil made hatching and protecting eggs easier for the animals. So well-protected are the fossilised eggs found here that many researchers call them the best-preserved eggs in the world after the ones found in Aix-en-Provence in France. These fossilised dinosaur remains have triggered what tourism officials of the Gujarat state call "Dinosaur Tourism". Princess Aaliya also called the Dinosaur Princess conducts guided tours of the fossil park.
