Here is a chart, via the New York Times, showing the US states with the greatest net migration in 2023:

This is calculated by looking at the difference between arrivals and departures for each state, but only within the US. And for the first year since 2014, Texas has overtaken Florida, though admittedly not by much.

I saw some discussion about this on Twitter, but I think it's important to point out that this is only domestic migration. Between 2023 and 2024, the US grew by some 3.3 million people. And 84% of this growth (about 2.8 million people) came from international migration.

So let's include those numbers (data via the US Census Bureau).

Here are the most populous states:

Here are the top 10 states by numeric growth:

And here are the top 10 states by percent growth:

When looking at overall numeric growth, Texas and Florida still land at the top. (They're also among the highest in terms of percentage growth, despite already being the second and third most populous states.) But now states like California and New York show up on the top 10 list, which speaks to their ability to draw people from around the world.

None of this is particularly surprising, but I still think it's valuable to see the numbers.

Cover photo by Courtney Rose on Unsplash

Here's an excerpt from a recent post by Scott Galloway talking about LA's devastating wildfires:

The question isn’t whether to rebuild, but where. Pacific Palisades is a wonderful place to live, but those amazing views of beautiful topography of foothills, mountains, canyons, and ridgelines are located in fire zones. Early estimates put the total cost of the wildfires at $250 to $275 billion. The property insurance bill is expected to easily top $20 billion. California’s insurance market was already in crisis, as leading insurers had done the math and decided to leave the state or not renew policies in fire-prone areas. California’s state-backed FAIR Plan is the insurer of last resort in these areas. Statewide, the number of FAIR Plan policies in 2024 increased 40% from 2023, and 85% in Pacific Palisades. Continuing to underwrite wood-built craftsman homes in Altadena (median home value: $1.3 million) and mansions along PCH is a wealth transfer from California’s taxpayers to some of its wealthiest people.

This isn’t unique to California; 10 states across the political spectrum, including Florida and Texas, sued a federal flood insurance program after it adjusted premiums to better reflect climate realities. As one meme put it: You may not believe in climate change, but your insurance company does.

He's not wrong, though I'm sure that the impacts of the deadliest and most destructive wildfires in California's history were felt by a broad cross section of people. And, no matter how much money you have, losing your home is going to be traumatizing. My mom's house in New Brunswick burnt down when she was a young girl and she remembers it vividly. You lose things that are priceless. Still, the questions of where and how to rebuild are important ones. Living in a high-risk area has costs associated with it. I do think it's only fair to ask who will be underwriting these costs.

On this blog, we often talk about city building in the context of doing things to help improve a city -- whether that be a development project, a new public art mural, or an interesting local business. These interventions help to build a city. But even more specifically, the term has, for many, come to mean building up a city in a positive way.

But there is another way to think about city building. You can think of it in terms of building actual new cities. We've spoken about some of these before, namely this one in California and this odd one in Saudi Arabia. But apparently it is becoming more common. According to The Economist, the world is now building more new cities than it has in the last 80 or so years:

Egypt’s “New Administrative Capital” is part of a rush of city-building. Firms and governments are planning more settlements than at any time in the post-war period, with many already under construction. Ninety-one cities have been announced in the past decade, with 15 in the past year alone. In addition to its new capital in the north, Egypt is building five other cities, with plans for dozens more. India is considering eight urban hubs. Outside Baghdad, Iraq, workers have just broken ground on the first of five settlements.

In some cases, it is being done as a solution to urban congestion. If this city is too expensive and unaffordable, just create a new one. This appears to be part of the idea with the above city outside of San Francisco. Of course, new cities can also be created for ideological reasons, or for political purposes, which was the case with Brazil's capital city, Brasilia.

Here, the idea was to move the federal capital away from the country's populated southeast region to a more geographically neutral location in the middle of the country. It also turns out that seeding a new city with government institutions is a good way to get one of these started. Existing cities do, after all, benefit from network effects.

History points to characteristics shared by successful projects. State institutions can help anchor cities, as Brasília (in Brazil) and Chandigarh (in India) showed in the 20th century. Although both have had problems, people in Brazil and India are voting with their feet. Brasília’s population is growing at 1.2% a year, more than double the national average. Chandigarh, a state capital, is now India’s fourth-richest region on a per-person basis.

But putting money, ego, and ideology aside, when does it actually make sense to start a new city in lieu of just expanding (or addressing the problems in) the one(s) you've already got? Population size can't be the only factor in determining whether a city is "full", because Tokyo seems to do just fine as the largest metropolitan area in the world.

If it hasn't already been done, I think this would make for an interesting research project. Until then, there's this (paywalled) Economist article.