The Air Quality Index is an indicator of overall air quality that takes into account all of the criteria air pollutants measured within a geographic area.

Percentage of total population within a designated area that is identified as both “low income” and having “low access” to healthy food. Note that there are many ways to measure food access for individuals and for neighborhoods, and many ways to define which areas are food deserts (neighborhoods that lack healthy food sources).

Mean travel time to work

The Housing Affordability Index measures whether or not a typical family earns enough income to qualify for a mortgage loan on a typical home. A value of 100 means that a family with the median income has exactly enough income to qualify for a mortgage on a median-priced home. For example, a composite HAI of 120.0 means a family earning the median family income has 120% of the income necessary to qualify for a conventional loan covering 80 percent of a median-priced existing single-family home.

Number of ballots cast for population over age of 18 for November elections

Mean money income received in the past 12 months computed for every woman, man, and child in a geographic area