Most Crowded Places: Country, City, and State/Region

Population Density Leaders by Geographic Scale

Country: Monaco

Tiny city-state on the French Riviera: ~18,000–26,000 people/km² (varies by source), the highest sovereign nation density.

City: Manila (Metro Manila), Philippines

Urban area density ~43,000 people/km²; city proper ~71,000/km²—among the world's densest major cities.

State/Region: Delhi (National Capital Territory), India

Density ~11,300 people/km²; highest among Indian states/union territories. (Note: Delhi is a union territory, not a state, but functions similarly.)

Other ultra-dense entities: Macau (SAR), Singapore (city-state), Dhaka (city), Gaza Strip (territory).