Maricopa County had nation’s largest population growth last year

Mar 29, 2022, 11:00 AM

(KTAR News Photo)...

(KTAR News Photo)

(KTAR News Photo)

PHOENIX – More people have been moving to Maricopa County than any other county in the nation, according to data released last week by the U.S. Census Bureau.

Maricopa County’s population grew by 58,246 to 4,496,588 over the 12 months ending July 1, 2021, far more than any other county. Next on the list was Collin County, Texas, with 36,313.

The growth in Maricopa County was fueled by nation-leading domestic migration numbers, with 46,866 more people within the U.S. moving in than out.

Maricopa County is the nation’s fourth-most populous county, behind Los Angeles, Cook (Chicago area) and Harris (Houston area).

Los Angeles County remained the largest by far, with a population of 9,829,544, despite a nation-high net loss of 184,465 residents last year.

When looking at population for metropolitan regions, the Valley was No. 2 in numeric growth, trailing only Dallas-Fort Worth, which increased by 97,290 residents.

The population in Phoenix and its surrounding suburbs grew by 78,220 to 4,946,145, with a nation-high domestic migration increase of 66,850.

Of the nation’s 10 largest metro areas, Phoenix was one of four to see its population increase, joining Dallas-Fort Worth, Houston and Atlanta.

The Phoenix growth, with a nation-high domestic migration increase of 66,850, was driven by moves from elsewhere in the U.S., while it was propelled by a combination of migration and births outpacing deaths in Dallas and Houston.

The Valley’s natural increase from births accounted for a very small share of its growth — around 10%.

The Associated Press contributed to this report.

We want to hear from you.

Have a story idea or tip? Pass it along to the KTAR News team here.

Arizona News

Mega Millions button lit up on a lottery ticket machine...

Kevin Stone

Mega Millions lottery tickets purchased in Scottsdale, Tucson win $50,000 each

Two Arizona Lottery players each won $50,000 in Friday’s Mega Millions drawing, officials announced Monday.

51 minutes ago

Car crashes into power pole in Phoenix, 2 critically injured...

Serena O'Sullivan

2 men in critical condition after car crashes into power pole in Phoenix

Two men are in critical condition after a car crash involving a power pole in Phoenix on Monday, officials said.

2 hours ago

An image from Google Street View shows the third-party post office between a Jimmy John's and a Dun...

Southeast Valley shopping center temporarily evacuated after bomb threat

Multiple businesses at a southeast Valley shopping center were temporarily evacuated Monday because of a bomb threat, authorities said.

3 hours ago

A DUI suspect drove down a 200-foot embankment in Cottonwood before a second DUI suspect was arrest...

Arizona DUI suspect’s car careens down 200-foot embankment before 2nd DUI suspect arrested

A DUI suspect drove down a 200-foot embankment in Arizona on Saturday morning before another DUI suspect attempted to evade police at the crash area, authorities said.

4 hours ago

Split panel image of the front of an Albertsons grocery store on the left and a Kroger plastic bag ...

Kevin Stone

Arizona joins federal lawsuit to block merger of grocery giants Kroger and Albertsons

Arizona is part of a federal lawsuit filed Monday to block the controversial merger of Kroger and Albertsons, two of the nation’s largest grocers.

5 hours ago

The eastbound Loop 202 South Mountain freeway was closed in Phoenix on Feb. 26, 2024, for a fatal c...

Eastbound Loop 202 South Mountain Freeway reopens in Phoenix after fatal wrong-way crash

The eastbound Loop 202 South Mountain freeway reopened in Phoenix after a fatal wrong-way crash shut down traffic on Monday, officials said.

6 hours ago

Sponsored Articles


Midwestern University

Midwestern University Clinics: transforming health care in the valley

Midwestern University, long a fixture of comprehensive health care education in the West Valley, is also a recognized leader in community health care.


DISC Desert Institute for Spine Care

Sciatica pain is treatable but surgery may be required

Sciatica pain is one of the most common ailments a person can face, and if not taken seriously, it could become one of the most harmful.


Sanderson Ford

The best ways to honor our heroes on Veterans Day and give back to the community

Veterans Day is fast approaching and there's no better way to support our veterans than to donate to the Military Assistance Mission.

Maricopa County had nation’s largest population growth last year