Methodology · what least crowded means
This is a density ranking, not a smallest-population list.
Population density equals the July 1, 2025 population estimate divided by 2025 Gazetteer land area. The calculation excludes water. A geographically large city can rank as sparsely populated even when thousands of people live there.
The ranking requires at least 5,000 residents. Without that floor, nearly empty incorporated places would dominate the low-density results and answer a different question. The same qualifying universe powers the densest ranking, so the two pages are exact opposite views of one dataset.
Municipal boundaries matter. Cities with unusually large legal boundaries may rank as less crowded than their settled neighborhoods feel. Use the density figure as a city-boundary comparison, not a measure of street-level crowding.