David Montgomery

David Montgomery

David Montgomery is a data visualization journalist at CityLab.

The facade of a building in Manhattan, with an A/C unit in every window.

8 Charts on How Americans Use Air Conditioning

The U.S. government’s long-running Residential Energy Consumption Survey includes a lot of data on our A/C habits—and some surprises.

a map of historic rainfall odds in the U.S.

Will It Rain on Your Fourth of July Parade?

We crunched the rainfall measurements for July 4 for every county in continental U.S. to calculate the historic odds of an Independence Day downpour.

A woman at the doctor's office.

Life Expectancy Is Associated With Segregation in U.S. Cities

“Your neighborhood shouldn’t influence your odds of seeing your grandchildren grow up,” says a researcher for NYU’s new analysis of City Health Dashboard data.

HOAs Are Popular Where Prejudice Is Strong and Government Is Weak

A new study finds that higher percentages of wealthy, Asian, and white residents live in HOAs; and people pay a premium of about 4 percent for homes in HOAs.

Bill de Blasio, the mayor of New York City (Left) and Pete Buttigieg, the mayor of South Bend (Right)

Two Mayors-for-President, Head to Head

With Bill de Blasio’s 2020 bid, there are multiple sitting mayors in the crowded Democratic primary. How does NYC’s candidate compare to Pete Buttigieg?

The Neighborhoods Where Housing Costs Devour Budgets

A significant chunk of Americans spend more than half their incomes on rent or home mortgage payments. Here’s the data on the severely housing-burdened.

A photo of a snowplow clearing a street in Minneapolis

Minneapolis’ Snow Parking Ban Winks at its Pro-Transit Future

Sorry, drivers. Record-breaking February snowfall has forced the Twin Cities to remove more than a third of their street parking.

A Clinton-Kaine campaign sign is seen behind a Trump-Pence sign in adjacent yards.

Why Suburban Swing Voters May Be Less Common Than You Think

A new poll finds that far from being more moderate than urban or rural voters, suburbanites are actually more partisan.

San Francisco Is for Lovers. Washington, D.C., Not So Much.

Love, actually, is not everywhere this Valentine’s Day, according to new online dating data. At least not the walks-on-the-beach, unrequited kind.

Donald Trump delivering the State of the Union on February 5, 2019.

How Presidents from Trump to Washington Have Talked Cities in the State of the Union Address

Trump’s mention of cities was not a particularly positive one. How does his SOTU address compare with past presidents on urban issues? We have the data.

a photo of a Minneapolis bike rider in winter

What It’s Like to Bike at 20 Below

All it takes is the right equipment to stay warm and safe on a bike, even in the middle of a polar vortex, these brave St. Paul cyclists say. Here’s what you should wear.

An animated world map shows dramatic changes in land use from 1700 to 2000.

How 300 Years of Urbanization and Farming Transformed the Planet

Three centuries ago, humans were intensely using just around 5 percent of the Earth’s land. Now, it’s almost half.

Sears store closures, in square feet.

The 2018 Retail Apocalypse, in 6 Charts and a Map

Store closures are up as online shopping grows—but other measures suggest brick-and-mortar retail is still doing OK.

A photo of Andrew Field, the owner of Rockaway Taco, looking out from his store in the Rockaway Beach neighborhood of the Queens borough of New York.

Tacos and Transit: Rate Your City

From taco-rich San Diego to the tortilla wastelands of Boston, we asked you to grade U.S. cities on two critical metrics: Mexican food and public transportation.

Long Island City, Queens residents in a park.

What New Yorkers Really Think of Amazon HQ2

More than half of them welcome the tech giant, according to a Quinnipiac poll. But support varies by borough, and race.

Mike Espy and Cindy Hyde-Smith at a debate.

In Mississippi Senate Race, the Suburbs Won’t Save Democrat Mike Espy

Democrats hoping to pull off an upset in Mississippi’s U.S. Senate race have to struggle against the state’s unusually small urban and suburban population.

A category for each congressional district by density, on a spectrum from rural to urban.

CityLab’s Congressional Density Index

A new way to categorize all 435 U.S. congressional districts by their density, on a spectrum from rural to urban.

Suburban Voters Gave Democrats Their House Majority

Predominantly suburban congressional districts, once closely divided, are now twice as likely to be represented by a Democrat than by a Republican.

Density Will Affect Who Controls State Legislatures, Too

Even at the state level, suburbs are the battlegrounds in politics this year. Take Minnesota.

The 2010 Midterm Wave Rewrote America’s Political Geography. Will 2018 Do It Again?

In 2010, Republicans established a new normal by dominating rural areas. Now, CityLab’s analysis shows it’s the suburbs that are up for grabs.

Congressman Dan Donovan talks to supporters.

In These Outlier Congressional Districts, Density Doesn’t Equal Democrats

Across the U.S., denser districts in Congress tend to be more Democratic, and sparser ones more Republican. But there are a few exceptions with their own personalities, from Staten Island to Bernie Sanders land.