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The timeline can be navigated with the “Scroll Left” and “Scroll Right” buttons or by dragging the pointer to a date on the timeline waveform (located at the bottom of the screen on the desktop version and on the left of the screen on mobile). To filter by a particular topic and see a smaller section of the data, make a selection on the dropdown “Filters” menu or click “Search” to do a keyword search. Hover over the abbreviated filter tags in the blue boxes to see the complete name of the filter, or click a filter to display all the data with this tag. If you want to take a deeper dive into a specific topic by viewing a narrative essay page and a curated timeline, click on “Stories.”

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Urban areas now defined solely by population density in the U.S. Census.

Date: 2000

The Story of Rural Health
RUR
LLP

Previous metrics for defining urban areas focused on specific population thresholds. The new method of designation measures the density of people living in an are. This means that some areas previously considered rural are now identified as urban "Metropolitan Statistical Areas."