This map showing the locations of 280 million individual posts on Twitter shows a depressing divide in America: Tweets coming from Manhattan tend to come from iPhones. Tweets coming from Newark, N.J., tend to come from Android phones.

If you live in the New York metro area, you don't need to be told that Manhattan is where the region's rich people live, and the poor live in Newark. Manhattan's median income is $67,000 a year. Newark's is $17,000, according to U.S. Census data.

The rich, it seems, use iPhones while the poor tweet from Androids.

The map was created by Mapbox, which markets beautiful mapping software. You can use it to zero in on your ZIP code and see how your neighborhood breaks down.

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