Map Monday: Minnesota Population Cartogram

David Montgomery at the Pioneer Press has a great piece up today demonstrating the difference between a “regular” map projection and a cartogram when it comes to representing population and political balance.

Here are his two maps of the state’s legislative senate districts, along with one that I added showing the core city senate districts:

minnesota SD map

minnesota pop cartogram

minnesota-pop-cartogram TC

Here’s what Montgomery says about the difference:

My selection of “metro” districts was of course, somewhat arbitrary. You could easily expand the yellow to include more suburban areas, or subtract suburban areas to reduce it to the urban core. Both of those tell different stories of political geography, and I hope to revisit them over the coming months.

Check out the whole story. The good news is that he’s promising more spatial analysis! is a non-profit and is volunteer run. We rely on your support to keep the servers running. If you value what you read, please consider becoming a member.

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6 Responses to Map Monday: Minnesota Population Cartogram

  1. Matt Steele
    Matt Steele December 29, 2014 at 1:59 pm #

    I’d like to see a similar geographic display of GDP, tax receipts, or other economic indicators. My guess is that the core cities and the metro as a whole would have significantly larger shares. Though it’s much harder to do such an analysis since, unlike senate districts and population, I cannot think of boundaries which contain roughly equal units of economic activity.

  2. David Markle
    David Markle December 30, 2014 at 11:46 am #

    Literally spectacular!

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