The census reshapes House representation every 10 years

Redistricting reshapes political boundaries, usually once a decade after the census

Every 10 years, states redraw congressional and legislative districts based on census data to ensure equal population. Legislatures usually control the process, though some states use independent commissions to curb partisan influence.

Most US House seats stay with the same party for decades

An analysis by the Pew Research Center shows that since the 1920s, the vast majority of House districts have been consistently won by the same party, with only a small share regularly changing hands. This highlights the large advantage incumbents have in House elections.

Breaking down the House races

All 435 voting seats in the US House are up for election, but less than 10% of them are competitive. See a breakdown of the races and which way they are leaning here.

States are constitutionally mandated to draw their own congressional districts

Under Article I, Section 4 of the US Constitution, state legislatures possess the authority to determine how congressional districts are drawn. However, Congress retains the power to alter these rules if it chooses to.

A summary of the 2020 census

This summary of the 2020 census shows an aging America and wide racial gaps between generations. The information provides the national and geographic composition of the nation’s age and racial-ethnic makeup. New statistics for 2020 show that the...

Three ways the US population will change over the next decade

This article lists the top three ways the US population will change over the next decade. Using population data from the US Census Bureau and the UN Population Division, the piece explores what America might look like 10 years from now, which...

US marshals conducted the national census for nearly a century

From 1790 to 1870, US marshals handled the national census, gathering population data from every district. The responsibility was gradually transferred to a separate federal office that would officially become the Census Bureau in 1902.

The Great Compromise created Congress's two-chamber structure during the Constitutional Convention

The Great Compromise of 1787 established a bicameral Congress, balancing population-based representation in the House with equal representation for each state in the Senate—a system designed to reconcile the competing interests of large and small states.

The House of Representatives controls the $7T federal budget

The House holds the exclusive "power of the purse" to initiate revenue bills, a provision in the US Constitution designed to divide power with the Senate and give states with larger populations greater influence over federal budgeting.

Which Senate seats are up for election, and how they are leaning

There are 14 Democratic and 21 Republican Senate seats up for grabs. See the Cook Political Report's continuously updated estimates on how they're leaning.

Each state’s Electoral College votes mirror its representation in Congress

This overview explains how states receive electors equal to their senators and representatives, and details the legal framework governing how the Electoral College functions during presidential elections.

Tracking where people moved in the US in 2022

The latest data from the US Postal Service's change of address request system shows a decline in migration in 2022. See where people are moving and where they are leaving with this data breakdown.

16 states impose term limits on their legislatures

As of 2025, 16 states limit how long lawmakers can serve, usually capping tenure at eight to 12 years in one chamber or across both chambers combined. Most of these limits stem from a 1990s reform wave aimed at curbing career politicians.

Explore detailed US census data for each state

QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more, collected through the US census. Interactive tables, maps, and charts synthesize census data. A drop-down menu allows users to...

See the results of all 59 presidential elections from 1789 to 2024

This interactive tool lets users explore the outcomes of every US presidential election from George Washington's uncontested 1789 victory through 2024, showing how electoral votes, state results, and shifting coalitions shaped each race.

Guess US city populations via bracket-style game

The US Census Bureau's data visualization team created a game—laid out like a March Madness basketball bracket—where you try to decide which metro area of two has the greater population. Test your knowledge of relative city populations and see...

US homes have been shrinking in recent years

Specifically, the median square footage of new single-family homes in the US has decreased in each of the past several years. In 2015, the typical new-construction home was about 2,467 square feet—but by 2024, that number had shrunk to 2,146 square feet.

Before the 16th Amendment, US tax law required direct taxes to be directly apportioned to a state's population

Due to these requirements, the federal government could not impose many direct taxes. Direct taxes include property and income taxes, whereas indirect taxes include duties and excises.

See the day in the life of a lawmaker

This video tracks Mark Alford, who has represented Missouri's 4th district in the United States House of Representatives since 2023, offering a firsthand look at the pace, travel, and daily demands of congressional life.

Despite being favored by 87% of Americans, Congress does not have term limits.

Hear about the individuals who have reshaped the Constitution throughout American history

This multi-episode podcast series from The Washington Post explores how debates, court decisions, and influential individuals have shaped the Constitution as Americans pushed the nation to live up to its founding ideals.

Can you pass the US Civics quiz?

To become a naturalized US citizen, you must answer 10 questions out of a pool of 100, with at least six being correct in order to pass. It's commonly said that many natural-born American citizens would likely not do so well on the test. To get a sense of the questions asked, challenge yourself with 10 civics questions with this fun quiz from the AP to see how you'd do on the all-important naturalization test.

DC has the highest share of low-income renters on housing assistance in the country

Seventy-two per every 1,000 residents in the nation's capital were low-income residents on housing assistance as of the year 2024.

A 1990 law forced museums and federal agencies to return Native remains and sacred objects

The Native American Graves Protection and Repatriation Act required federally funded institutions to inventory and return Native American human remains and sacred items to descendant tribes.

The Voting Rights Act reshaped federal protection of voting rights

Signed into law in 1965, the Voting Rights Act aimed to end racial discrimination in voting. This resource traces its creation and explains how later court rulings have weakened its enforcement power over time.

How the US took half of Mexico

In just two years, the United States redrew the map of North America. Sparked by border disputes in Texas and fueled by President James Polk’s drive for expansion, the Mexican–American War (1846–1848) reshaped both nations.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Trace how the Bill of Rights, inspired by centuries of political theory, took shape between 1774 and 1789.

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

Coral polyps reproduce via broadcast spawning, where entire reefs simultaneously release reproductive cells for about one hour, once a year.

A century of Billboard issues documenting the evolution of popular music.

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

View the ten deadliest tornadoes in US history.

See a ranking of the best (and worst) Federal Reserve Chairs since 1914 out of the 16 men and women who have held the office since.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Alzheimer's can lead to brain shrinkage, with an average of around 2% of volume reduction per year

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.