Neighborhood Comparison Methodology

Comparison Methodology

Neighborhood comparisons are generated using:

• Geographic Proximity: ZIP codes within the same city are grouped for comparison
• Air Quality: AQI values are compared across nearby ZIP codes
• Amenity Density: Number and variety of POIs per ZIP code
• Peer Tiers: ZIP codes are categorized into tiers based on environmental and lifestyle metrics

Peer Tiers

ZIP codes are assigned to peer tiers (A, B, C, D) based on a composite score of air quality, amenity density, and environmental performance. This helps users quickly understand how a ZIP code compares to its neighbors.

Limitations

• Comparisons are relative — a "better" AQI in one ZIP may still be moderate overall
• Neighborhood boundaries don't always align with ZIP code boundaries
• Personal preferences and priorities may differ from our comparison criteria