Population patterns depend on migration, natural change, geography, and how statistics are measured. is the correct choice. Census counts, estimates, and migration data measure different aspects of demographic change.

Idaho gained residents between the 2020 census and the July 2025 estimate, but the statewide change does not reveal what happened in every county. Migration, births, and deaths can influence the total differently. To interpret a local trend, compare the same geographic area and statistical period.