Turns out, everyone wants to live here. Photo via Getty Images

Houston is the fourth most populous U.S. city, and saw the ninth largest numeric population gain of any U.S. city in 2022, according to the U.S. Census Bureau's latest findings.

From July 2021 to July 2022, Houston added 11,223 new residents, bringing its total population to 2,302,878. By comparison, San Antonio (population just under 1.5 million) is the seventh largest.

Harris County also led the way with the highest numeric gains for housing units in the nation, at 32,694, coinciding with recent reports deeming Houston the most active real estate market within the last decade.

Together, Houston-The Woodlands-Sugar Land ranked No. 5 in the list of the 10 most populous U.S. metro areas (as opposed to the cities, themselves). Dallas-Fort Worth-Arlington ranked one place higher at No. 4.

Texas cities and towns dominated every list in the new Census Bureau report. "Texas was the only state that had more than three cities on both the 15 fastest-growing large cities and towns by numeric change and by percent change lists," the report says.

Fastest-growing cities
Six out of the 15 fastest-growing cities in the United States are in Texas, and with one Houston suburb – Conroe – landing at No. 11. Conroe had an 6.3 percent population increase from July 2021 to July 2022, bringing the city's total population just over 101,400.

The north Austin suburb of Georgetown had the highest growth rate in the nation, at 14.4 percent, bringing the city's total population to more than 86,500 residents. Surrounding Austin suburbs Kyle and Leander landed in No. 3 and No. 4 with the same population growth rate of 10.9 percent.

The not-so-little Dallas suburb Little Elm zoomed all the way up to No. 5 with an 8 percent population increase, bringing the city's total population to more than 55,300 residents. New Braunfels, which is outside San Antonio, came in at No. 13.

The top 15 fastest-growing large cities in the U.S. are:

  • No. 1 – Georgetown, Texas
  • No. 2 – Santa Cruz, California
  • No. 3 – Kyle, Texas
  • No. 4 – Leander, Texas
  • No. 5 – Little Elm, Texas
  • No. 6 – Westfield, Indiana
  • No. 7 – Queen Creek, Arizona
  • No. 8 – North Port, Florida
  • No. 9 – Cape Coral, Florida
  • No. 10 – Port St. Lucie, Florida
  • No. 11 – Conroe, Texas
  • No. 12 – Maricopa, Arizona
  • No. 13 – New Braunfels, Texas
  • No. 14 – Lehi, Utah
  • No. 15 – Medford, Massachusetts
Largest population increases
When it comes to most populous cities overall, Texas takes five of the 15 top spots with Houston claiming No. 1 in the state. After Houston's No. 4 national rank with its population of over 2.3 million, San Antonio earned No. 7 with over 1.47 million residents, and Dallas at No. 9 with just under 1.3 million residents. Austin barely made it into the top 10 with over 974,000 residents, and Fort Worth ranked No. 13.

The top 15 most populous American cities are:

  • No. 1 – New York City
  • No. 2 – Los Angeles
  • No. 3 – Chicago
  • No. 4 – Houston
  • No. 5 – Phoenix
  • No. 6 – Philadelphia
  • No. 7 – San Antonio, Texas
  • No. 8 – San Diego, California
  • No. 9 – Dallas
  • No. 10 – Austin, Texas
  • No. 11 - Jacksonville, Florida
  • No. 12 - San Jose, California
  • No. 13 - Fort Worth, Texas
  • No. 14 - Columbus, Ohio
  • No. 15 - Charlotte, North Carolina

Greatest housing growth
The report also discovered that housing inventory skyrocketed by 1.6 million units between 2021 and 2022. Texas had the third fastest housing growth with a rate of 2.3 percent, versus Utah, which had the fastest growth at 3.3 percent.

In addition to Harris County, the only other Texas county that made the top five for the highest housing growth was Travis (No. 3).

The full report can be found on census.gov.

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This article originally ran on CultureMap.

Texas added more residents from mid-2018 through mid-2019 than any other state. Marco Bicci/Getty Images

Texas added more residents than any other state in past year

Growing gains

Yes, everything is bigger in Texas — including population growth. From mid-2018 to mid-2019, the Lone Star State added more residents than any other state, new estimates from the U.S. Census Bureau show.

From July 2018 to July 2019, the population of Texas grew by 367,215, according to Census Bureau data released December 30. That's close to the number of people who live in the Dallas-Fort Worth suburb of Arlington (398,112).

Keep in mind that this does not mean nearly 370,000 people moved to Texas in just one year. The Census Bureau's new population estimates represent the number of people who moved to and moved out of each state, as well as the number of births versus deaths.

Texas' 2018-19 population growth eclipsed that of the country's largest state, California.

The Golden State saw its population increase by just 50,635 during the one-year period, the Census Bureau says. What's behind the meager growth? From 2018 to 2019, California's net domestic migration plunged by 203,414. Net domestic migration represents the number of people moving to a state versus the number of people moving out of a state.

Here's another eye opener: Texas accounted for nearly one-fourth of the country's population growth from 2018 to 2019 (1,552,022 people). In that time, 10 states lost population, including Illinois, New Jersey, and New York.

In July 2018, the Texas population stood at an estimated 28,628,666. By July 2019, that figure had climbed to 28,995,881, the Census Bureau says. On a percentage basis, Texas' 2018-19 population growth (1.28 percent) ranked fifth among the states.

Perhaps more impressive is how much Texas expanded from April 2010 (when the last official U.S. headcount was conducted) to July 2019. During that period, Texas added 3,849,790 residents, according to the Census Bureau. To put that into perspective, nearly 4 million people live in the entire state of Oklahoma. Texas' population jumped 15.3 percent from 2010 to 2019, the third highest growth rate behind the District of Columbia and Utah.

Experts cite economic and job growth — along with a low cost of living, a low cost of doing business, and low taxes compared with many other states — as drivers of Texas' population boom. Helping fuel the boom are substantial population spikes in the state's four largest metro areas: Austin, Dallas-Fort Worth, Houston, and San Antonio.

In 2030, the state's population is projected to approach 34.9 million, according to a forecast from the Texas Demographic Center.

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This article originally ran on CultureMap.

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7 innovative startups that are leading the energy transition in Houston

meet the finalists

Houston has long been touted as the energy capital of the world, and it's now it's also a leading player in the energy transition — home to numerous startups and innovators working toward a cleaner future.

As part of the 2025 Houston Innovation Awards, our Energy Transition Business category honors innovative startups that are providing solution within renewables, climatetech, clean energy, alternative materials, circular economy, and more.

Seven energy transition companies have been named finalists for the 2025 award. They range from a spinoff stimulating subsurface hydrogen from end-of-life oil fields to a company converting prickly pear cactus biogas into energy.

Read more about these climatetech businesses, their founders, and their green initiatives below. Then join us at the Houston Innovation Awards on Nov. 13 at Greentown Labs, when the winner will be unveiled at our live awards ceremony.

Tickets are now on sale for this exclusive event celebrating all things Houston Innovation.

Anning Corporation

Clean energy company Anning Corporation is working to develop geologic hydrogen, a natural carbon-free fuel, using its proprietary stimulation approaches and advanced exploration modeling. The company said that geologic hydrogen has the potential to be the lowest-cost source of reliable baseload electricity in the U.S.

The company was founded by CEO Sophie Broun in 2024 and is a member of Greentown Labs. Last month, it also announced that it was chosen to participate in Breakthrough Energy’s prestigious Fellows Program. Anning raised a pre-seed round this year and is currently raising a $6 million seed round.

Capwell Services

Houston-based methane capture company Capwell Services works to eliminate vented oil and gas emissions economically for operators. According to the company, methane emissions are vented from most oil and gas facilities due to safety protocols, and operators are not able to capture the gas cost-effectively, leading operators to emit more than 14 million metric tons of methane per year in the U.S. and Canada. Founded in 2022, Capwell specializes in low and intermittent flow vents for methane capture.

The company began as a University of Pennsylvania senior design project led by current CEO Andrew Lane. It has since participated in programs with Greentown Labs and Rice Clean Energy Accelerator. The company moved to Houston in 2023 and raised a pre-seed round. It has also received federal funding from the DOE. Capwell is currently piloting its commercial unit with oil and gas operators.

Deep Anchor Solutions

Offshore energy consulting and design company Deep Anchor Solutions aims to help expedite the adoption of floating offshore energy infrastructure with its deeply embedded ring anchor (DERA) technology. According to the company, its patented DERA system can be installed quietly without heavy-lift vessels, reducing anchor-related costs by up to 75 percent and lifecycle CO2 emissions by up to 80 percent.

The company was founded in 2023 by current CEO Junho Lee and CTO Charles Aubeny. Lee earned his Ph.D. in geotechnical engineering from Texas A&M University, where Aubeny is a professor of civil and environmental engineering. The company has participated in numerous accelerators and incubators, including Greentown Labs, MassChallenge, EnergyTech Nexus LiftOff, and others. Lee is an Activate 2025 fellow.

Eclipse Energy

Previously known as Gold H2, Eclipse Energy converts end-of-life oil fields into low-cost, sustainable hydrogen sources. It completed its first field trial this summer, which demonstrated subsurface bio-stimulated hydrogen production. According to the company, its technology could yield up to 250 billion kilograms of low-carbon hydrogen, which is estimated to provide enough clean power to Los Angeles for over 50 years and avoid roughly 1 billion metric tons of CO2 equivalent.

Eclipse is a spinoff of Houston biotech company Cemvita. It was founded in 2022 by Moji Karimi (CEO and chairman of Cemvita), Prabhdeep Sekhon (CEO of Eclipse), Tara Karimi, and Rayyan Islam. The company closed an $8 million series A this year and has plans to raise another round in 2026.

Loop Bioproducts

Agricultural chemical manufacturing company Loop Bioproducts leverages the physiology of prickly pear cactus grown in Texas to produce bioenergy, food, and remediate industrial wastewater streams. The company uses its remote sensing technology, proprietary image-based machine learning model, and R&D innovation to capture raw biogas from the cactuses and is focused on scaling cactuses as an industrial crop on land.

Rhiannon Parker founded Loop Bioproducts in 2023.

Mars Materials

Clean chemical manufacturing business Mars Materials is working to convert captured carbon into resources, such as carbon fiber and wastewater treatment chemicals. The company develops and produces its drop-in chemical products in Houston and uses an in-licensed process for the National Renewable Energy Lab to produce acrylonitrile, which is used to produce plastics, synthetic fibers, and rubbers. The company reports that it plans to open its first commercial plant in the next 18 months.

Founded in 2019 by CEO Aaron Fitzgerald, CTO Kristian Gubsch, and lead engineer Trey Sheridan, the company has raised just under $1 million in capital and is backed by Bill Gates’ Breakthrough Energy, Shell, Black & Veatch, and other organizations.

Solidec

Chemical manufacturing company Solidec has developed autonomous generators that extract molecules from water and air and converts them into pure chemicals and fuels that are free of carbon emissions onsite, eliminating the need for transport, storage, and permitting. The company was founded around innovations developed by Rice University associate professor Haotian Wang.

The company was selected for the Chevron Technology Ventures’ catalyst program, Greentown Labs, NSF I-Corps and was part of the first cohort of the Activate Houston program. It won first place at the 2024 startup pitch competition at CERAWeek. Solidec was founded in 2023 by Wang, who serves as chief scientist, CEO Ryan DuChanois, and CTO Yang Xia. It closed a $2.5 million seed round earlier this year.

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The Houston Innovation Awards program is sponsored by Houston Community College, Houston Powder Coaters, FLIGHT by Yuengling, and more to be announced soon. For sponsorship opportunities, please contact sales@innovationmap.com.

Rice University team develops eco-friendly method to destroy 'forever chemicals' in water

clean water research

Rice University researchers have teamed up with South Korean scientists to develop the first eco-friendly technology that captures and destroys toxic “forever chemicals,” or PFAS, in water.

PFAS have been linked to immune system disruption, certain cancers, liver damage and reproductive disorders. They can be found in water, soil and air, as well as in products like Teflon pans, waterproof clothing and food packaging. They do not degrade easily and are difficult to remove.

Thus far, PFAS cleanup methods have relied on adsorption, in which molecules cling to materials like activated carbon or ion-exchange resins. But these methods tend to have limited capacity, low efficiency, slow performance and can create additional waste.

The Rice-led study, published in the journal Advanced Materials, centered on a layered double hydroxide (LDH) material made from copper and aluminum that could rapidly capture PFAS and be used to destroy the chemicals.

The study was led by Rice professor Youngkun Chung, a postdoctoral fellow under the mentorship of Michael S. Wong. It was conducted in collaboration with Seoktae Kang, professor at the Korea Advanced Institute of Science and Technology, and Keon-Ham Kim, professor at Pukyung National University, who first discovered the LDH material.

The team evaluated the LDH material in river water, tap water and wastewater. And, according to Rice, that material’s unique copper-aluminum layers and charge imbalances created an ideal binding environment to capture PFAS molecules.

“To my astonishment, this LDH compound captured PFAS more than 1,000 times better than other materials,” Chung, lead author of the study and now a fellow at Rice’s WaTER (Water Technologies, Entrepreneurship and Research) Institute and Sustainability Institute, said in a news release. “It also worked incredibly fast, removing large amounts of PFAS within minutes, about 100 times faster than commercial carbon filters.”

Next, Chung, along with Rice professors Pedro Alvarez and James Tour, worked to develop an eco-friendly, sustainable method of thermally decomposing the PFAS captured on the LDH material. They heated saturated material with calcium carbonate, which eliminated more than half of the trapped PFAS without releasing toxic by-products.

The team believes the study’s results could potentially have large-scale applications in industrial cleanups and municipal water treatments.

“We are excited by the potential of this one-of-a-kind LDH-based technology to transform how PFAS-contaminated water sources are treated in the near future,” Wong added in the news release. “It’s the result of an extraordinary international collaboration and the creativity of young researchers.”

Axiom Space announces new CEO amid strategic leadership change

new leader

Six months after promoting Tejpaul Bhatia from chief revenue officer to CEO, commercial space infrastructure and human spaceflight services provider Axiom Space has replaced him.

On Oct. 15, Houston-based Axiom announced Jonathan Cirtain has succeeded Bhatia as CEO. Bhatia joined Axiom in 2021. Cirtain remains the company’s president, a role he assumed in June, according to his LinkedIn profile.

In a news release, Axiom said Cirtain’s appointment as CEO is a “strategic leadership change” aimed at advancing the company’s development of space infrastructure.

Axiom hired Cirtain as president in June, according to his LinkedIn profile. The company didn’t publicly announce that move.

Kam Ghaffarian, co-founder and executive chairman of Axiom, said Cirtain’s “proven track record of leadership and commitment to excellence align perfectly with our mission of building era-defining space infrastructure that will drive exploration and fuel the global space economy.”

Aside from praising Cirtain, Ghaffarian expressed his “sincere gratitude” for Bhatia’s work at Axiom, including his leadership as CEO during “a significant transition period.”

Bhatia was promoted to CEO in April after helping Axiom gain more than $1 billion in contracts, Space News reported. He succeeded Ghaffarian as CEO. Axiom didn’t indicate whether Bhatia quit or was terminated.

Cirtain, an astrophysicist, was a senior executive at BWX Technologies, a supplier of nuclear components and fuel, for eight years before joining Axiom. Earlier, Cirtain spent nearly nine years in various roles at NASA’s Marshall Space Flight Center in Huntsville, Alabama. He previously co-founded a machine learning company specializing in Earth observation.

“Axiom Space is pioneering the commercialization of low-Earth orbit infrastructure while accelerating advancements in human spaceflight technologies,” Cirtain said. “I look forward to continuing our team’s important work of driving innovation to support expanded access to space and off-planet capabilities that will underpin the future of space exploration.”

Among other projects, Axiom is developing the world’s first commercial space station, creating next-generation spacesuits for astronauts and sending astronauts on low-Earth orbit missions.