Buckingham, IL has a population of 330 and is the 21,966th largest city in the United States. The population density is 1,314 per sq mi which is 491% higher than the Illinois average and 1351% higher than the national average. The median age in Buckingham is 33 which is approximately 12% lower than the Illinois average of 37. In Buckingham, 58% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 87% of Buckingham residents were born in Illinois, 13% were born out of state, 0% were born outside of the United States and 0% were foreign born.