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The Undercover Historian

Weighting Makes a Difference

Creating Cartograms

Big Data is not about the Data

Michigan county map

Which states are winning the 2020 apportionment race?

It is not Michigan

The latest Population Estimates were just released and show that Michigan would lose another Congressional seat if it were 2020; but, it is close. Michigan only needs +1,039 to retain its seat. Note that 7 other states grew slower than Michigan, but we also had worse net migration numbers this year than in 2014 so it is not clear that Michigan is on the right track yet.

Data Services (DS)

We help researchers at the Population Studies Center acquire, verify, maintain, improve, distribute, and preserve data.

  • DS maintains a data catalog of data files and documentation for research in population studies.
  • DS responds to common questions on using and manipulating data.
  • DS assists PSC researchers seeking to use restricted data.
  • DS provides a collection of resources that includes external datasets, data tools, and instructional materials.
  • DS offers suppport for researchers using Census and ACS data.
  • DS helps researchers with geographic resources for various datasets.

Restricted Data

Data Services helps researchers access, acquire, and use contractual data in a secure environment.


We provide support for data manipulation, geographic cross-walks, details on census operations and procedures.


The ACS is the replacement for the census long-form. We can help you move from the census to the ACS.


Check out our new page on geographic resources!