General General 3 min read

How many are we?

Very few people know these key facts about the census. What about you?

Image: Enayet Raheem

Every 10 years, the U.S. undertakes one of its largest and most important national efforts: counting its population. Required by the Constitution since 1790, the census shapes political representation, funding, and planning across the country. While it may seem simple, it involves millions of households, strict legal protections, and years of preparation. Here’s how it all comes together.

1
It happens every 10 years

Image: Towfiqu barbhuiya

The U.S. Census is required by Article 1, Section 2 of the Constitution and takes place every decade, ending in "0," such as 2000, 2010, and 2020 . The first census was conducted in 1790 under President George Washington.

This fixed schedule ensures consistency. Population changes over time, so a regular count allows the government to fairly adjust representation and resources based on where people actually live.

2
It counts everyone living in the U.S.

Image: Joey Csunyo

The census aims to count every person residing in the country, not just citizens. This includes legal residents, undocumented immigrants, and people without permanent housing .

The key concept is "usual residence," meaning where a person lives most of the time. This approach provides a realistic snapshot of the population and ensures communities are represented accurately.

3
It determines seats in the House of Representatives

Image: Darren Halstead

Census results are used to divide the 435 seats in the U.S. House of Representatives among the 50 states , a process known as apportionment.

States can gain or lose seats depending on population shifts. For example, after the 2020 census, Texas gained two seats, while states like California and New York lost one each due to slower growth.

4
It influences federal funding

Image: Alexander Grey

Census data guide the distribution of hundreds of billions of dollars in federal funding each year, with estimates ranging from $675 billion to $1.5 trillion.

Programs for highways, hospitals, schools, and housing depend on population figures . Areas with higher populations typically receive more funding, making an accurate count financially important for communities.

5
Households receive census invitations

Image: Nguyen Dang Hoang Nhu

Every household in the United States receives an official census invitation , usually by mail. In 2020, more than 140 million housing units were included.

This system replaced earlier door-to-door counting methods. Using a national address database helps ensure broad coverage and makes it easier for people to respond on their own.

6
It can be completed online, by mail, or by phone

Image: sofatutor

The modern census offers multiple ways to respond. In 2020, people could complete it online, by mailing back a paper form, or by phone .

Adding online responses marked a major shift. It reduced costs, improved convenience, and reflected how Americans increasingly move towards digital communication.

7
Census workers follow up in person

Image: BoyuZhang1998, CC BY-SA 4.0, via Wikimedia Commons

If households do not respond, trained census workers, called enumerators, visit homes in person to collect the information.

This step is essential because the census must count everyone, not just those who respond voluntarily . It helps reach people in rural areas, dense cities, and communities with lower response rates.

8
It asks basic demographic questions

Image: Rafael AS Martins

The census form is intentionally short. In 202, it included about 10 questions covering age, sex, race, household relationships, and housing status.

The goal is to keep it simple. Shorter forms increase participation while still collecting the key data needed for representation, funding, decisions, and planning.

9
Responses are legally confidential

Image: Towfiqu barbhuiya

Federal law strictly protects census responses. Under Title 13 of the U.S. Code, personal data cannot be shared with law enforcement, immigration authorities, or other agencies .

Only anonymous, combined statistics are released. Census workers face severe penalties, including fines and prison, for revealing personal information.

10
Missing the census is technically against the law

Image: Tingey Injury Law Firm

Responding to the census is legally required. Federal law allows fines for refusing to answer or providing false information .

In practice, penalties are rarely enforced. The rule exists mainly to emphasize how important it is for everyone to be counted accurately.

11
The data helps draw voting districts

Image: KOBU Agency

After the census determines how many representatives each state receives, the data is used to redraw congressional and state legislative districts .

This process, called redistricting, ensures districts reflect current population patterns. It supports the principle of equal representation, often described as "one person, one vote."

12
Results are released over time

Image: Abdul Hakim

Census results are published in stages. Basic population counts come first, allowing Congress to complete apportionment.

More detailed demographic data follows months later. This gradual release ensures accuracy while protecting privacy , sometimes using advanced techniques like statistical noise to safeguard identities.

General General 7 min read

Sin City’s secrets

Fascinating facts about Las Vegas you won't find on travel guides

Image: Paul IJsendoorn

A man once sold every single thing he owned, flew to Las Vegas, and bet the whole lot on a single spin of the roulette wheel. Do you think he won? There are 600 miles of concrete flood tunnels under Sin City—can you estimate how many people live there? Most of the profits of the whole city come from one single game; could you guess which one it is? Read on to find all the answers to these stunning facts about Las Vegas, Nevada.

1
The man who sold everything he owned and bet it all on one spin

Image: Pavel Danilyuk

In 2004, a 32-year-old British man named Ashley Revell walked into the Plaza Hotel and Casino in Las Vegas and placed every dollar he had in the world on a single spin of the roulette wheel.

In the months before, Revell had sold his house in Kent, his BMW, his Rolex watch, his golf clubs, his electronics, his furniture, and every piece of clothing he owned. The grand total of his liquidated possessions came to $135,300 . He pushed the entire stack of chips onto red as the ball was already spinning. It landed on Red 7.

Revell walked away with $270,600, exactly double what he had come in with. He tipped the croupier $600 on the way out. The whole thing was filmed by Sky One for a reality mini-series called Double or Nothing .

2
Beneath the casinos, an estimated 1,500 people live underground

Image: Stephen Leonardi

Below the glittering hotels and neon lights of the Las Vegas Strip runs a network of concrete flood drainage tunnels stretching roughly 600 miles beneath the city. Built in the 1990s to manage flash flooding in the Nevada desert, these tunnels have become an unofficial home for hundreds of the city’s unhoused residents.

It is estimated that between 1,200 and 1,500 people live there . Some residents have constructed makeshift shelters from plywood and salvaged metal deep inside the tunnels, occasionally just yards below the casino floors above them.

The tunnels pose serious dangers: flooding risk during desert rainstorms, extreme heat, and high rates of substance abuse. A network of nonprofits, outreach teams, and government agencies coordinates aid by providing the residents with essentials and offering them long-term case management, like treatment and housing placement.

3
Las Vegas has a literal black book of people banned for life

Image: BehindTheTmuna

Since 1960, the Nevada Gaming Control Board has maintained what it officially calls the List of Excluded Persons, better known as the Black Book. The original publication was a black-covered booklet held together with Scotch tape, listing eleven people deemed to have "notorious or unsavory reputations."

Most of the early entries were organized crime figures: Chicago outfit boss Sam Giancana; enforcer Anthony "Tony the Ant" Spilotro, whose violent exploits inspired Joe Pesci’s character in the film Casino ; and nine other mob associates. Anyone whose name appears on the list is permanently banned from entering any licensed gaming establishment in the state of Nevada.

Violating the ban is a gross misdemeanor under Nevada law. As of 2026, there are 37 names on the list. No one has ever successfully appealed their removal.

4
Strange casino rules: no clocks, no windows, no soft dice

Image: Elizabeth Ferreira

Las Vegas casinos are designed to keep gamblers at the tables as long as possible. Clocks are banned to distract players from the passing of time. Windows are eliminated so that they cannot tell whether it is noon or 3 a.m.

What’s more, Nevada law governs even the dice. The Nevada Gaming Control Board requires casino dice to be perfectly transparent so that no hidden weights can be concealed inside . Each die must be precision-manufactured to within 1/10,000th of an inch, with razor-sharp corners and edges showing no rounding whatsoever. They are inspected regularly and, in high-stakes games, replaced every eight hours of play to ensure consistent rolls.

5
The famous Las Vegas Strip is not actually in Las Vegas

Image: David Lusvardi

The stretch of Las Vegas Boulevard South that the world knows as the Strip does not lie within the city limits of Las Vegas. This is the area that’s home to Caesars Palace, the Bellagio, MGM Grand, the Venetian, Mandalay Bay, and dozens of other iconic venues.

Technically, it falls within an unincorporated community called Paradise , which is governed by Clark County rather than the city of Las Vegas. Paradise was deliberately established in 1950, when casino owners moved to avoid Las Vegas city taxes and regulations while continuing to trade on the city’s name and benefit from its infrastructure.

The city of Las Vegas actually begins further north along the boulevard, near the Stratosphere. Paradise covers approximately 54 square miles and has a residential population of around 220,000 people, which means it’s one of the largest and most densely populated unincorporated communities in the United States.

6
The Luxor’s sky beam is the most powerful artificial light on earth

Image: Pavel Špindler, CC BY 3.0, via Wikimedia Commons

Rising straight up from the apex of the black pyramid-shaped Luxor Hotel and Casino, the Luxor Sky Beam has been one of the most recognizable sights in Las Vegas since the hotel opened in October 1993. It is, by any measure, the most powerful artificial light beam on the planet. The beam is produced by 39 individual xenon lamps, each with 7,000 watts and roughly the size of a washing machine, focused through computer-designed curved mirrors into a single concentrated column.

Together, they generate an estimated 42.3 billion candlepower. On a clear night, airline pilots have reported seeing the beam from as far as 250 miles away. The total operating cost, confirmed by Luxor engineer John Lichtsteiner, is $51 per hour, of which $20 is electricity. That adds up to $480 a day only for lighting the signature beam each night —or $175,200 a year.

7
Las Vegas is home to the tallest observation tower in the US

Image: Dave Morgan

Standing 1,149 feet above the Las Vegas valley, the Strat Tower, officially rebranded from the Stratosphere in 2020, is the tallest freestanding observation tower in the US and the second-tallest in the entire Western Hemisphere, surpassed only by the CN Tower in Toronto at 1,815 feet. It is also the tallest building in Nevada and the tallest structure west of the Mississippi River.

At the top, the Strat offers four outdoor thrill rides, including one that dangles riders 64 feet beyond the edge of the building on a mechanical arm, over 900 feet above the ground.

8
Slot machines account for around 60% of all casino revenue

Image: Elizabeth Ferreira

Walk into any Las Vegas casino, and the first thing that surrounds you (and the loudest) is the rows of slot machines that line nearly every available wall and corridor. That layout is not a coincidence.

It is estimated that slot machines consistently generate approximately 60 to 65 percent of all casino gaming revenue in Nevada. There is roughly one operating slot machine for every eight residents of Las Vegas. Nevada law requires that video slot machines pay out a minimum average of 75 percent, though Strip machines in practice typically return 87 to 97 percent.

Casinos place the most visible, most tempting machines near entrances, elevators, and high-foot-traffic corridors , a placement strategy that has been studied and refined over decades. Despite the rise of poker rooms and sports betting in recent years, slot machines have remained the single largest source of gaming income in Las Vegas without interruption for more than half a century.

9
The gambling capital of the world does not sell lottery tickets

Image: Obi

Nevada is one of only two states in the entire United States that have no state lottery, the other being Utah. You cannot legally walk into a convenience store and buy a $2 scratch-off ticket.

The reason is straightforward and has nothing to do with moral opposition. Nevada’s gaming industry has lobbied persistently and successfully against a state lottery since gambling was first legalized in 1931, on the grounds that a government-run lottery would directly compete with casino revenues.

10
FedEx was saved from bankruptcy by a Las Vegas blackjack table

Image: Joshua Santos

In 1971, FedEx, then called Federal Express, was days away from collapse. Founder Frederick W. Smith had built the company on the revolutionary idea of overnight package delivery using a central hub-and-spoke air network, but the business was not working.

The company had roughly $5,000 left in its operating account. It was not enough. Facing what appeared to be the end, Smith flew to Las Vegas and sat down at a blackjack table. He gambled the company’s last $5,000 and turned it into $27,000, which was just enough to cover that week’s fuel costs and keep the planes in the air. The breathing room bought by that blackjack session gave Smith enough time to secure additional financing. Today, FedEx employs more than 500,000 people worldwide and is valued at over $60 billion.

Geography Geography 3 min read

Hidden country

10 places in America that still baffle scientists (and tourists love)

Image: JaZmi

America has no shortage of mysterious places—locations steeped in legend, unexplained science, or just eerie natural beauty. From strange floating orbs to weird geological phenomena, these destinations keep historians, scientists, and thrill-seekers guessing. Whether man-made or naturally puzzling, these 10 U.S. locations refuse to offer simple explanations.

1
Area 51

Image: Michael Herren

Location: Nevada

Shrouded in secrecy, this military base has become synonymous with UFOs and government cover-ups. Its official purpose was testing aircraft like the U-2 spy plane and Stealth Bomber, but its classified nature fueled decades of wild speculation, ranging from secret weapons to actual aliens working for the government.

2
Coral Castle

Image: Audric Wonkam

Location: Florida

This massive stone structure was built by a single man, Edward Leedskalnin, using enormous limestone blocks—some weighing 30 tons. According to him, no heavy machinery was ever used during the construction, and he even claimed to know the secrets of the pyramids . To this day, engineers and historians debate how he moved and placed those stones with such precision.

3
Skinwalker Ranch

Image: Jacob Padilla

Location: Utah

This 512-acre property has long been at the center of UFO sightings, cattle mutilations , and alleged portals to other dimensions. The stories were so compelling that, in the ’90s, a private research organization purchased the ranch to try and make some scientific sense of the claims, conducting extensive field studies. However, after nearly a decade of research, they found no conclusive evidence.

4
Mammoth Cave

Image: Ksenia Kudelkina

Location: Kentucky

The world’s longest known cave system has its fair share of unexplored tunnels, ghost stories, and strange air currents. More than 400 miles have been mapped , yet many passages remain uncharted. Researchers have yet to fully understand the cave’s underground ecosystem, and new chambers are still being discovered today.

5
The Marfa Lights

Image: Alexandra Vo

Location: Texas

Reported since at least the late 19th century, floating orbs of light have been seen near this small town with no consistent explanation. Night watchers continue to gather at designated viewing areas along Highway 90, hoping for a glimpse. While scientific studies suggest that distorted car headlights are the most likely cause, many remain convinced otherwise.

6
The Devil’s Kettle

Image: Andrew Ling

Location: Minnesota

This unusual waterfall splits in two—one half flows normally, while the other vanishes into a deep pothole with no known exit. Scientists poured dye, ping-pong balls, and even GPS trackers into the mysterious hole, all to see where the water ends up. While researchers eventually confirmed it rejoins the river underground, exactly how and where remained elusive for decades.

7
Cahokia Mounds

Image: pcrm Dorego

Location: Illinois

Built centuries before Columbus arrived in the Americas, the ancient city of Cahokia featured massive earthen mounds, wooden palisades, and likely formed part of complex trade networks across the continent. Despite having a population rivaling London in the 1200s, according to archaeologists, the city was mysteriously abandoned in the span of a few years. No written records explain its decline, though environmental stress, resource shortages, and internal social factors are often cited as possible causes.

8
Blythe Intaglios

Image: Alexander Schimmeck

Location: California

Similar to Peru’s Nazca Lines, these giant geoglyphs are etched into the desert floor, seemingly visible only from the sky. Created by scraping away dark rocks to reveal lighter earth beneath, the figures are believed to be between 450 and 2,000 years old, depending on the specific design. While their exact purpose remains a mystery, they are believed to have had a ceremonial function.

9
The Spooklight

Image: Ben Griffiths

Location: Missouri-Oklahoma Border

Also known as the Hornet Spooklight, this floating orb has been seen since at least the late 19th century. It appears along a rural stretch of road near the small community of Hornet, Missouri, and Quapaw, Oklahoma. While some theorize it could be caused by car lights from miles away, some sightings predate automobiles.

10
Roanoke Island

Image: Stephen Crane

Location: North Carolina

In the 1580s, an entire colony vanished overnight, leaving behind only the word "Croatoan" carved into a tree. No graves, no remains—just an eerie disappearance that sparked centuries of theories, from disease and starvation to assimilation with local tribes. Modern archaeology uncovered European artifacts at sites associated with Native groups miles away, but no definitive evidence has ever solved the mystery.

Explore more American facts

Choose your favorite category!

General
General

As American as apple pie—the very best America has to offer!

Culture
Culture

Delve into the astounding richness of American lore.

Geography
Geography

Hop in and explore vast and diverse American landscapes.

History
History

Discover the key moments that shaped the United States.