America has a missing-middle problem — and this one is demographic.

Why it matters: The shrinking 45-64 population could leave fewer experienced adults to run institutions, mentor younger workers and care for the fast-growing population coming after them.

• This is the Gen X-ish squeeze: The age group includes most of Generation X, plus younger baby boomers.
• It also overlaps with the "sandwich generation" years, when many adults are juggling children, aging parents, careers and their own retirement worries.

By the numbers: The U.S. population ages 45-64 fell by 2.68 million from April 1, 2020, to July 1, 2025, according to new Census Bureau data.

• The group declined 3.2% nationally, from 84 million to 81.3 million.
• The Northeast had the steepest percentage drop, falling 7.1%.
• The Midwest fell 6.2%.
• The West fell 2.7%.
• The South was the only region where the 45-64 population grew — barely — adding 18,749 people, or 0.1%.

State of play: The decline is happening as the country gets older overall.

• The U.S. median age rose to 39.4 in July 2025, up from 38.6 in April 2020.
• The 65-and-older population grew 16.2% nationally during the same period.
• The under-18 population fell 2.4%.

Zoom in: The 45-64 group isn't vanishing so much as aging into the 65-and-older population. Younger boomers are aging out of the 45-64 group as older Gen Xers enter it.

• High costs of living and housing shortages in the Northeast and West, coupled with aggressive internal migration, are driving this experienced cohort southward.

Context: Gen X is smaller than the baby boom generation because it was born during the "baby bust" that followed the postwar birth surge.

The impact on communities

As rents climb and older homeowners stay put, senior housemates are having a moment.

• Older adults are turning spare bedrooms into lifelines, for themselves and for renters priced out of the market, the New York Times reports.

The big picture: It's not charity. It's a trade: space for affordability, companionship and a hand around the house.

• The arrangement pays off socially and financially for homeowners and renters alike.

Zoom out: Around 55 home-share groups now play roommate matchmaker nationwide, vetting applicants and brokering the delicate stuff: pets, parking, chores and thermostat preferences.

• Several states are weighing "Golden Girls" bills to loosen rules on unrelated adults living together.
• Nonprofits like Sunshine Home Share Colorado make matches directly after interviews and background checks. Last year, Sunshine connected a record 31 shares.

The bottom line: Home-sharing won't fix a housing shortage. But it's a hopeful start — right down the hall.

Searches for gray hair salons and services have surged on Yelp, according to data shared with Axios.

Why it matters: America is getting older, and more people are embracing their grays rather than hiding them.

• Even some younger women are seeking out the look.

By the numbers: Yelp searches for salons offering gray blending — a coloring technique that uses highlights to incorporate gray strands — jumped 905% in 2025 from a year earlier.

• Inquiries for gray hair specialists rose 276%.

The big picture: Blending is typically lower maintenance than fully covering gray hair, which can require salon appointments every three to four weeks.

• Blending can stretch that time between visits by a month or two, says Cynthia Valdez, owner and hairstylist at an Austin, Texas, salon.

What they're saying: Many people now want to "showcase" their grays, Valdez tells Axios, "rather than always being obsessed about covering it, or being insecure about showing it."

• That's a big change. "It used to be like, 'Oh, you got one gray. Let's cover it right away so nobody can see it.'"

Zoom in: Many of her clients are millennials and Gen Z with "just a little bit" of gray. For them, Valdez says she adds highlights to enhance or brighten the grays that frame their face.

Reality check: While blending may be on the rise, it's not for everyone.

• Some clients still prefer regular root touch-ups, Valdez says.

Go deeper

👋 Axios chief copy editor Sheryl Miller here.

• I'm turning 60 this year, and this milestone has me thinking about the value of aging beyond economic power or trendy hair. It's perspective.

The big picture: Like a lot of older Gen Xers, I have stories of buying an annual road atlas, talking for hours on a corded phone in the kitchen and witnessing the first Macintosh appear in my college computer lab.

• I remember looking at that "mouse thing" and feeling quite sure it would never catch on.

Between the lines: I've been wrong about so many things. And if 60 has taught me anything, it's that being wrong isn't the worst thing. Refusing to learn is.

Here's some advice — a few things I wish I'd known when I was younger.

✏️ Write it down. You think you'll remember everything, but you won't. You'll remember the big things, mostly.

• The small things — the funny thing your kid said, the long days at the pool — those have a way of slipping away.

💞 Your friends — your support system — are everything. In a family emergency, they were the ones who organized meals, picked up my daughter from college and showed up when I couldn't ask.

👥 Make the connection. In my 30s, a retired couple lived across the street from us. They were the neighbors who went out of their way to do kind things, like installing a tree swing in their yard for the neighborhood kids to use.

• Then life got busy. We rushed through school years, work deadlines, practices, dinners, all of it. Somewhere along the way, I lost that connection, and I will always regret that.

The bottom line: Maybe graying means you've lived long enough to be wrong about a few things — and lucky enough to keep learning.