The Incan Empire conducted perhaps the most unique census of the 15th century. The Incas, whose empire stretched across the Andes mountains, above, recorded information on quipus. A quipu is a rope made from llama or alpaca hair or cotton cords. A series of knots on the quipu defined certain numeric and non-numeric values. Quipus recorded the ages, occupations, and wealth of Incan citizens.

Photograph by Rudy King, MyShot
Our media can be used in a variety of contexts—from media spotlights to encyclopedic entries to lessons. From this page, check out the different ways you can use this .

Other Pages That Use This Item

census Encyclopedic Entry

Best For

Mathematics, Geography, Social Studies

Appropriate For

  • Educators
  • Families
  • Students

Encyclopedic entry. A census counts the population of a nation, state, or other geographic region. It records information about the population’s characteristics, such as age, sex, and occupation.