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@dogobox

dogobox/.block

Forked from mbostock/.block
Created April 29, 2016 16:32
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.block
license: gpl-3.0
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README.md

The Census Bureau provides a 797M shapefile for national zip code tabulation areas. Simplified using TopoJSON (with -q 1e5 -s 3e-7), the resulting file is only 7.2M, a reduction of 99.1%. The distribution of zip codes is a rough proxy for population density. Part of the U.S. Atlas project.

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<meta charset="utf-8">
<img src="readme.png" width="960" height="500">
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