This blog is intended to go along with Population: An Introduction to Concepts and Issues, by John R. Weeks, published by Cengage Learning. The latest edition is the 12th (it came out in 2015), but this blog is meant to complement any edition of the book by showing the way in which demographic issues are regularly in the news.

If you are a user of my textbook and would like to suggest a blog post idea, please email me at: john.weeks@sdsu.edu

Wednesday, August 8, 2018

U.S. Census Removes Its 2017 Projections from its Website--UPDATED

Thanks to Beth Jarosz for pointing out that the U.S. Census Bureau has removed its latest (2017) set of national population projections from its website, saying only that:
An error was identified in the 2017 population projections data release. All data files have been removed. Corrected news products and data files are forthcoming.
I most recently used these data exactly one month ago, so we will have to see if my conclusions in that blog post still hold when the revised projections are posted. 

UPDATE:

Today the Census Bureau has posted its revised population projections, with the following explanation of what happened:
The 2017 National Population Projections were revised after their original release date March 13 to correct an error in the calculation of infant mortality rates. The files were removed from the website on August 1, 2018 and an erratum note was posted. The error erroneously caused an increase in the number of deaths projected in the total population. The revised calculation in the infant mortality rate results in a decrease in the number of deaths and a slight increase in the total projected population in the revised series. The error did not affect the other two components of population change used in the projections series (fertility and migration). Additionally, major demographic trends, such as an aging population and an increase in racial and ethnic diversity, remain unchanged.

​The corrected data files are now available here.

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