US fertility rate

Twitch's average concurrent viewership has risen as the US fertility rate has declined, between 2017 and 2022, at a correlation of -0.953. The pairing invites an entire generation's worth of punchlines about screens and babies, most of which are wrong, and a few of which are uncomfortably close to right. The correlation does not sort which is which.

Twitch average concurrent viewers grew from around 650,000 in 2017 to over 2.5 million by 2022, reflecting the platform's entrenchment during the pandemic. The US fertility rate declined from about 1.77 children per woman in 2017 to roughly 1.64 in 2022, continuing a long-term secular trend driven by delayed family formation, cost-of-living pressures, and cultural shifts around parenthood. The two trends share no direct mechanism but sit inside the same generational shift: the same cohort that is delaying or foregoing children is, in aggregate, spending more time in digital entertainment environments. Both are downstream of the same economic and cultural pressures.

Six years of inverse movement can describe two facets of a generation's changed priorities. The stream is rising because the population is restructuring. One number is growth; the other is a decision not made.