Centers of Population

(census.gov)

65 points | by geox 826 days ago

14 comments

  • et2o 826 days ago
    Interestingly enough, the mean center of population for NY State is only about 9 miles from the NJ border. Given NYC's location, not suprising. I wonder if there are any states with centers of population closer to the border than that. Given NY's geometry, if NYC continues to grow relative to upstate, I could imagine the center of population of the state actually being outside of NY State boundaries.

    It's also possible in the past the NJ's state center of population might have been in NY - if Newark and Northern NJ were more relatively populous, I think that the mean center of population might be in Staten Island or the NY-NJ harbor.

    • et2o 826 days ago
      After a brief search, Hawaii's is in the ocean between O'ahu and Moloka'i. DC's might be the closest to the state border (about 3.1 miles) but still just about directly in the center of the DC polygon.
      • madcaptenor 826 days ago
        Still feels like that's in Hawaii, though.
    • madcaptenor 826 days ago
      For Delaware, I eyeball the distance from the center of population to the nearest border (again NJ) at maybe three miles. But Delaware's so small that I feel like that doesn't count; something like (distance to border)/(square root of state area) might be worth looking at.
      • et2o 826 days ago
        Definitely-would want to normalize distance by total state size, your formula works. I'm pretty sure NY would be the winner here, although Alaska might also be close by this metric.
      • zamadatix 826 days ago
        Google Map's measurement tool is giving me a hair under 5 miles which beats out Rhode Island.
        • madcaptenor 826 days ago
          That's what I'm seeing too - can't believe I forgot there was a measurement tool.
    • zie 826 days ago
      I would randomly guess Portland, it's literally up against the WA border on the north, and most of the state lives in/around Portland.
      • xyhopguy 826 days ago
        For oregon the population center is almost exactly Detroit. There is a large population in the willamette valley south of portland (and bend is captured by this too).
        • zie 826 days ago
          Assuming this is true, and it makes sense that it would be; Detroit is in the north west corner of the state, up near the WA border.
          • xyhopguy 825 days ago
            Definitely is technically in the northwest part of the state, but I'm not sure I'd call it close to the Washington border.

            It's much closer to Salem and Bend than it is Portland, for instance.

    • zamadatix 826 days ago
      Rhode Island's is < 6.5 miles. Feels a bit like cheating though haha.
    • Cupertino95014 826 days ago
      A fun project for your student(s):

      Do an animated video of a US map, where the mean center of population for each state moves around every 10 years.

  • Steltek 826 days ago
    For a related nerdy science joke, there's also Massachusetts' geographic center or in other words, the "Center of Mass".

    https://www.roadsideamerica.com/tip/570

  • PaulDavisThe1st 826 days ago
    How much would each (national, state) CoP move if it took actual people's weight into account?
  • Kon-Peki 826 days ago
    It is interesting that two smallest shifts in mean center of population are 2010-2020 and 1910-1920.

    The largest shift appears to be 1850-1860 - perhaps due to the California Gold Rush?

  • v8xi 826 days ago
    for those interested: the mean center of population for the US is a county road somewhere between Springfield and St. Louis, Missouri. https://goo.gl/maps/nSt8tZKGvhcsXqieA
  • erwincoumans 826 days ago
    Just curious, what is the purpose of having the center of population?
    • orange_joe 826 days ago
      If you wanted to place a shipping facility that could provide the fastest delivery to the most people in a given state, you could try putting it at the population center.
    • rossdavidh 826 days ago
      It's relatively easy to calculate, and does show in a simple map something about the very complex internal immigration history of our country. But, if it were really hard to determine, it is not soooo important that we would be likely to bother.
    • v8xi 826 days ago
      If we align it perfectly with the center of mass of the continent, maybe it will prevent sea level rise?
  • rindalir 826 days ago
    This is a major bummer for me. I live mere feet from the previous center of population for my state, and now it has moved nearly a mile away :(.
  • melissalobos 826 days ago
    That's kind of interesting, I think it might be more interesting if they didn't include Alaska and Hawaii and tracked those separately.
    • readthenotes1 826 days ago
      Or if they also added all the territories and extreme rendition sites!
  • jrmg 826 days ago
    Interesting to me that the US cente roof population is still moving west. Even between 2010 and 2020 there’s a notable shift.
    • q1w2 826 days ago
      Texas is still west of the current center and there has been huge migration to Texas.
      • biesnecker 826 days ago
        Anecdotally a lot of that is coming from California, though, which would have no net effect on the median line, right?
        • rossdavidh 826 days ago
          Depends on how much of the California influx is coming from Bay Area vs. L.A. or San Diego. It could still be a net southern shift.
          • majormajor 826 days ago
            Fun fact: All the major cities in Texas are further south than even LA.

            San Diego -> Dallas is a tiny northern move, though.

          • q1w2 825 days ago
            This assumes the data is granular to the city level. ...it's probably just state level data - and they are likely just using the state center point.
        • gumby 826 days ago
          Texas has a big population, as does California so I'd be surprised if the (actually small) net migration from California is really meaningful.
    • paganel 826 days ago
      The moving South part is also interesting.
      • mlindner 826 days ago
        Retirees moving from the midwest to warmer climates also.
  • beefman 826 days ago
    Why is the "geographic center of area" so far North?

    https://www.census.gov/library/visualizations/2020/geo/geogr...

    • maxnoe 826 days ago
      Alaska?
    • LargoLasskhyfv 826 days ago
      Because of the agglomeration of the United Frackers of the Bakken.
  • caditinpiscinam 826 days ago
    Is there a country who's center of population falls within another country?
  • et2o 826 days ago
    I thought they would already be marked on Google Maps, but they are not. It doesn't seem possible to add them even as a Tourist destination either. Interesting.
    • zamadatix 826 days ago
      I'm able to suggest adding them after entering a name, setting a category (e.g. Tourist Attraction), and clicking "update location on map" and not actually moving it (e.g. reset).
  • IAmGraydon 826 days ago
    You’ll find something very interesting about the mean center of population in the US (Texas County, MO). It’s the point from which the Delta wave of the pandemic emanated.

    https://covidestim.org/

    • IAmGraydon 825 days ago
      BTW, I should have added “in the US”. Did not mean to imply that the spread of Delta worldwide started there.