Since the early on years of the US at that spot has been a gradual westward shift inwards the hateful middle of population. In 1790 the almost populated cities inwards the U.S. were all on the East Coast. In the 2010 census seven of the 10 largest cities were located inwards the Dominicus Belt portion of the due south as well as west.
H5N1 few weeks agone I saw a actually interesting animated GIF, posted to Reddit, which mapped the tiptop 10 cities past times population past times decade inwards the United States. You tin stance the map, past times Reddit user Eudaimonics, here. Being an animated GIF way that yous can't interact amongst the map. I actually wanted to play amongst the map thence I decided to exercise my ain interactive map of the same data.
Shifting Cites shows the tiptop 10 almost populated U.S. cities for every decade since 1790. The map likewise shows the hateful middle of population inwards the USA for each decade. The information for the map comes from each U.S.census equally listed on these 2 Wikipedia articles; Largest cities inwards the US past times population past times decade & Mean middle of the U.S. population.
To exercise the map I made extensive role of the Leaflet mapping library's Layer Groups feature to grouping cities past times decade. The map as well as thence only uses an HTML5 gain slider command to charge the markers onto the map past times the relevant decade.
When yous choose a decade from the slider command the bluish markers demo the place of the tiptop 10 almost populated cities as well as the cherry mark shows the hateful middle of the population. The left manus side panel likewise updates to demo a numbered listing of the tiptop 10 cities for the selected decade. The pocket-size window inwards the tiptop right-hand corner of the map likewise updates to furnish to a greater extent than full general information on the patterns of population get beingness shown on the map.
