The number of voting members has been strictly capped at 435 since the passage of the Permanent Apportionment Act of 1929.

In 1930, there was an average of 294k citizens per Rep. In 2020, there was an average of 761k citizens per Rep. At some points in U.S. history, the ratio was 30k:1.

I am not sure whether having very small districts would help or hurt gerrymandering, because it all depends on spatial constraints and spatial/density autocorrelation. I do think it would be good for the Republic if our representatives cam from a local community where you reasonably expect that might have gone to school with them, or have met them at the coffee shop before, and where they can run a campaign by personally knocking on doors, which can be done if the ratio was like 80k:1.