Congressional districts are based only on population, not on area.
population levels determine number of districts
US congressional districts
mandla
population
electoral districts that vary greatly in population
Population.
The Capitol controls the population of the 12 districts by essentially scaring them into submission year after year. This is done with the actual hunger games.
The population of each state is divided into congressional districts by the number of registered voters and geographic lines. Federal congressional districts are similarly divided.
By population
California, with 53, the number of districts is based on population and is reapportioned every few years
All voting districts are divided according to population. There are ten in Washington state.