draw.city: Daily Population Map Game

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Today’s challenge<br>· Today

Draw an area with people.

Select Draw your area, then trace one complete outline.

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Bonus: Where is the center of population of your area?

Why is the answer a band, not a point?

A census block reports a total. It does not say where inside it those<br>people live. Place everyone in each census block at its southern edge<br>and the median line falls as far south as the data permits. Place them at<br>the northern edge and it falls as far north. Any line between the two could<br>be the true median. East and west work the same way. The band covers that<br>range.

We weigh over 2020 census blocks<br>when an area holds at most<br>25,000 of them,<br>and over census tracts above<br>that. Tracts are larger than blocks, so weighing over tracts gives a wider<br>band. The width reflects the size of the weighing unit, not the distribution<br>of people.

A census tract reports a total. It does not say where inside it those<br>people live. Place everyone in each census tract at its southern edge<br>and the median line falls as far south as the data permits. Place them at<br>the northern edge and it falls as far north. Any line between the two could<br>be the true median. East and west work the same way. The band covers that<br>range.

We weigh over 2020 census blocks<br>when an area holds at most<br>25,000 of them,<br>and over census tracts above<br>that. Tracts are larger than blocks, so weighing over tracts gives a wider<br>band. The width reflects the size of the weighing unit, not the distribution<br>of people.

A census unit reports a total. It does not say where inside it those<br>people live. Place everyone in each census unit at its southern edge<br>and the median line falls as far south as the data permits. Place them at<br>the northern edge and it falls as far north. Any line between the two could<br>be the true median. East and west work the same way. The band covers that<br>range.

We weigh over 2020 census blocks<br>when an area holds at most<br>25,000 of them,<br>and over census tracts above<br>that. Tracts are larger than blocks, so weighing over tracts gives a wider<br>band. The width reflects the size of the weighing unit, not the distribution<br>of people.

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Population uses 2020 Census block counts.

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2020 Census population

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Land area

Density

Population is computing.

Population uses the 2020 Census. Characteristics use ACS five-year estimates.<br>A value marked ≈ has less than 99.5% source coverage.

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