Data: American Community Survey; Chart: Axios Visuals
Young children's share of the population dropped across major U.S. metros over the past two decades, census data shows, mirroring national trends.
Why it matters: Nationwide factors are at play, including birth and death rates as well as immigration.
By the numbers: Among the 50 biggest metros, Salt Lake City (-3.2 percentage points), San Jose (-3pp) and Los Angeles (-2.8pp) had the biggest dips in young children's share of their overall population between 2005 and 2024.
Phoenix (-2.8pp), Denver (-2.6pp) and Atlanta (-2.5pp) also had sizable drops.
That's compared with -1.6pp among the U.S. broadly, and includes children younger than 5.
Boston is -1.6.
The big picture: The U.S. birth rate hit a record low in 2024, while life expectancy is approaching 80 following a pandemic-era dip.
Those data points might suggest children will make up less of the overall population over time β fewer kids, more older folks.
Between the lines: Falling birth rates are fueling concerns about economic growth and societal change in some corners, particularly among "pro-natalist" conservatives.