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The AARP Livability Index™ platform
Great neighborhoods for all ages

Index Methods and Sources

How Are Livability Scores Determined?

AARP intentionally designed its scoring criteria to draw on multiple, interconnected points to capture the complexity of what produces a high quality of life for a diverse population across many ages.

Metric values and policy points are scored for each of the seven livability categories: housing, neighborhood, transportation, environment, health, engagement, and opportunity. A location’s total livability score is an average of those seven category scores.

How We Score Communities

AARP seeks a high quality of life for diverse populations across many ages. Producing such a quality of life, though, involves many complex factors. To create a reliable measure that captures this complexity, we intentionally designed its scoring criteria to draw on multiple, interconnected factors - categories and indicators - to present a complete picture of communities.

Understanding the Scores

Each neighborhood, city, county, or state is scored on a scale from 0 to 100. The average location scores a 50. Those communities with more livability-friendly practices earn a score above 50 and those facing obstacles to livability score lower.

Infographic of the Community Score dial, with zero/"lowest possible" on the left, indicated by light blue, and 100/"highest possible" on the right, indicated by dark blue. There is an outline from approximately 20% to 75% indicating the range of actual community scores.

Can a Community Be Perfect?

In theory, yes, but in reality, no. Scores are built from the neighborhood level up. A total livability score of 100 means that place is the best in the country in meeting all the metrics and policies for each of the seven livability categories and while ideal, no community scores 100 in all seven categories.

Components of the Scores: Categories

Metric values and policy points are scored for each of the seven livability categories: housing, neighborhood, transportation, environment, health, engagement, and opportunity. A location’s total livability score is an average of those seven category scores.

The categories each provide important pieces of the picture of livability in a community.

Livability Categories Explained

The Livability Categories

Left side content. Each neighborhood, city, county, or state is scored on a scale from 0 to 100. The average location scores a 50. Those communities with more livability-friendly practices earn a score above 50 and those facing obstacles to livability score lower.

Components of the Scores: Indicators

Within the seven categories is the heart of the AARP Livability Index™: the 61 indicators, made up of 40 metrics and 21 policies.

  • Metrics measure how livable communities are in the present. Data is collected and analyzed from local, state, federal, and private sources

  • Policies measure how communities might become more livable over time based on actions taken now. Policy data is derived from publicly available data and information and covers the entire United States.

We draw from more than 50 unique sources of data to populate these indicators. Twenty-three of the metrics evaluate livability at the neighborhood scale (defined as the census block, block group, tract, or high school district), while the others use data sources at higher levels of geography (metro area, city, or county).

Sometimes we use a data source as-is to create a metric. In other cases, existing data require extra calculations or statistical modeling to produce the best measure of community livability. In some cases, the AARP Livability Index™ combines multiple sources or creates estimates when data aren’t available. This allows us to produce the best set of metrics to measure livability and to create a nationwide neighborhood AARP Livability Index™.

Detailed Indicator Definitions and Sources

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Additional Sources

Map Layer Data Not Included in Scoring

Key Terms

Understand important concepts and terms around the AARP Livability Index™.

Individual Preferences Reflected in the AARP Livability Index™

Expert Analysis

We conducted a thorough vetting process to determine which metrics and policies best capture the broad nature of livability. We also gave great thought and consideration to the data sources and methodology used in scoring. We did this in partnership with experts from the AARP Public Policy Institute (PPI), our consultant team, and PPI’s technical advisory committee, which includes 30 experts in public policy, community planning, public health, aging, environmental studies, consumer affairs, and economics. The result is a tool that sheds deep insight into what makes a community livable.