One in six of the US population live in 2% of its land area, and other things we learned from this mapping tool

Wow. Lot of people. Image: Sedac.

So here’s a cool thing doing the rounds on social media, as cool things are wont to do: a tool, courtesy of the Socioeconomic Data & Applications Center (Sedac), which estimates the population of any slice of the planet Earth you fancy drawing a line around.

Actually that’s not exactly right: technically, it allows you to estimate the population of any slice of the planet Earth back in 2005, which I note to my horror is a surprisingly long time ago now. But it is, nonetheless, a very cool tool, and allowed the Wall Street Journal’s Mike Bird to do this:

I haven’t actually checked Mike’s maths on this (that sounds like far too much work to me). But that snake seems to contain London, Birmingham, Nottinghma, Sheffield, Leeds, Manchester and Liverpool, plus their hinterlands and a chunk of territory between them, so it definitely seems plausible. Andwhen I did my own much lazier version I got this:

Back in 2005, the UK’s population was around 60m. If 35m lived in that wedge, then it seems entirely plausible that 30m lived in Mike’s snake. After all, nearly 47m lived in this circle:

That’s well under half the UK’s land area, containing over three-quarters of its population.

The Sedac tool isn’t restricted to the UK, of course. In European geography, there’s a wonderfully bizarrely-named concept called the “blue banana”: the sliver of territory running from northern England to southern Italy which is the most densely populated slice of the continent. It’s basically this bit:

Finding historic population figures for Europe is surprisingly difficult - in part, I suspect, because defining the boundaries of Europe is surprisingly difficult. But the whole of the EU had slightly under 495m people in 2005, so 188m is a pretty hefty chunk.

If you really want a megalopolis, though, try the Bos-Wash corridor in the north eastern United States:

That’s more than 1 in 6 of the US population, in around 2 per cent of its land area. (Yes, I know it looks like more than 2 per cent. It isn’t, I’ve checked. Blame the Mercator Projection.)

Just one more, for a giggle. In 2005, China had a population of around 1.3bn. More than 1bn of them lived in this area:

 

That’s about a quarter of the country, containing more than three quarters of its population.

Anyway, you get the idea. If you fancy wasting your afternoon drawing shapes on maps to see how many people live inside them, you can do so here.

UPDATE: The nice people who built the map have been in touch to point me to the most recent version, with data from 2015. So, there you go.

Jonn Elledge is the editor of CityMetric. He is on Twitter as @jonnelledge and on Facebook as JonnElledgeWrites

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The Liverpool metro just got its first new station in 20 years

The new Maghull North station. Image: Merseyrail.

Always nice when we get to report on a new bit of urban transport infrastructure outside London: the new station in Merseyside is hardly Crossrail, but it's a start.

The first trains reached Maghull North early this morning. The new station lies just north of, well, Maghull, on the Ormskirk branch of Merseyrail's Northern Line. Trains run to the eponymous West Lancashire town in one direction, and Liverpool Central in the other. (Only trains on the Southport branch of the Northern line continue south to Hunts Cross. Don't say we never reach you anything.)

Here's are some pictures of the new station, which looks adorably like it was built out of lego:

Plans for a station at Maghull, where a whole bunch of new housing is planned, have been on the table for more than a decade now. But its business case didn't win funding from the Liverpool City Region Combined authority until October 2016, and planning permission took another three months after that.

This is the first new station to open on the Merseyrail network since 1998, when it got two: Brunswick (just south of the city centre on the Northern line), and Conway Park (across the river, in downtown Birkenhead). Smartarses will try to tell you that other new stations have opened since – but Wavertree Technology Park, which opened in 2000, is only served by Northern Rail, and Liverpool South Parkway (2006) was actually an amalgamation of two existing stations at Allerton and Garston.

The network before Liverpool South Parkway, with its site circled. Click to expand. Image courtesy of Project Mapping.

The really exciting development, of course, would be for two new stations in the city centre to come off. Vauxhall lies to the north of the central business district, near to the site of the proposed new Everton Ground; St James lies to the south, in the Baltic Triangle creative district. Build both of those, and you'd end up with pretty comprehensive coverage of the Liverpool waterfront, as this map from our local correspondent Dave Mail shows:

Click to expand.

At present, both stations are just ideas in the authorities' eyes. But if Merseyrail is in a "building new stations" kind of a mood, then...

Anyway: I really just wanted to write something positive about train in the north of England. It’s been a while.

Jonn Elledge is the editor of CityMetric. He is on Twitter as @jonnelledge and on Facebook as JonnElledgeWrites

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