Did you know that the census is written into the Constitution? That’s right! Article I, Section 2, of the U.S. Constitution prescribes that a count of the U.S. population be done every ten years in years ending in zero. With more than 230 years of data, our nation's censuses and surveys serve as a valuable historical record illustrating America's changes and growth.

Share real census data related to Constitution Day—from the number of U.S. counties with names matching the last names of the founders of the Constitution who also served as U.S. presidents to the importance of apportionment, and more. 

Then, view the Teaching Guide for bonus ideas on how to build on their learning experience with classroom activities by grade level.