According to a May 2025 press release from the U.S. Census, Seattle had a population of 764,182 on July 1, 2023 and a population of 780,995 on July 1, 2024.
Meanwhile r/Seattle had 708,032 members on the morning of May 19, 2025 and 712,952 on the morning of May 29, 2025.
Assuming linear growth for both (yes I know this is wrong), if you assume July 1, 2023 is “day zero”, then the growth of Seattle can be plotted with a line through the points (0, 764182) and (366, 780995) and the growth of r/Seattle can be plotted with a line through (688, 708032) and (698, 712952). The lines cross at approximately (885, 804956), and 885 days after July 1, 2023 is December 2, 2025. (Presumably both grow exponentially and not linearly, which will tend to nudge both lines up.)
submitted by /u/bennetthaselton
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