Population by age band — research 2026-10-04

Share of the population in four bands, from each country's statistics office, for weighting a drawn birthdate by age. Computed from single-year ages.

Country	Date	Total	0–17	18–64	65–99	100+	Source
SE	2024-12-31	10,587,710	20.36%	58.80%	20.81%	0.028% (2,961)	SCB Statistikdatabasen, table BE0101A/BefolkningNy, CC0 1.0
US	2024-07-01	340,110,988	21.50%	60.51%	17.96%	0.029% (98,034)	Census Bureau, nc-est2024-agesex-res.csv, public domain

At 0.03%, a fixture of 10,000 rows holds about three people aged 100 or more.