What is NVI?

The Neighborhood Vitality Index is a 0–100 score that measures how healthy and thriving a census tract is — based entirely on US Census Bureau data that you control.

Why TractSavvy is Different

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Transparent Formula

Every metric, every weight, every calculation is visible. No black box. You choose what matters to you.

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Authoritative Data

Powered by the US Census Bureau's American Community Survey (ACS) — the gold standard for demographic data.

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5-Year History

See how neighborhoods evolved from 2019 to 2023. Trends tell a story a single number can't.

📋 Our Data Sources

American Community Survey (ACS) 5-Year Estimates

Annual survey data from the US Census Bureau covering demographics, income, housing, employment, and education for every census tract in the United States. Updated annually with 5-year rolling averages.

Source: census.gov/programs-surveys/acs

Census Geocoder

Official Census Bureau geocoding service that converts street addresses to census tract geographies using the most current geographic boundaries.

Source: geocoding.geo.census.gov

TIGER/Line Shapefiles

Census tract boundary geometries from the US Census Bureau's Topologically Integrated Geographic Encoding and Referencing system. Used to render the interactive map overlays.

Source: census.gov/geographies/mapping-files

🧮 The Default NVI Formula

These are the default weights. Every user can customize which metrics are included and how heavily they are weighted.

Median Household Income25% weight

Higher household income signals a stronger local economy and greater purchasing power. Scaled against $150,000 benchmark.

Census variable: ACS B19013_001E

Median Home Value20% weight

Property values reflect market confidence and investment activity. Scaled against $500,000 benchmark.

Census variable: ACS B25077_001E

Homeownership Rate15% weight

Owner-occupied housing percentage. Homeowners tend to invest more in their neighborhoods, driving stability.

Census variable: ACS B25003_002E / B25001_001E

Bachelor's Degree %15% weight

Percentage of adults 25+ with a bachelor's degree. Higher education correlates with economic mobility and civic engagement.

Census variable: ACS B15003_022E / B15003_001E

Population10% weight

Population density signals neighborhood activity and demand. Scaled against 5,000 benchmark.

Census variable: ACS B01003_001E

Low Poverty Rate15% weight

Inverse poverty metric — lower poverty rates score higher. Measures families below poverty line relative to population.

Census variable: ACS B17001_002E / B01003_001E

Low Unemployment15% weight

Employment rate as a share of the labor force. Lower unemployment = stronger local job market.

Census variable: ACS B23025_004E / B23025_006E

Low Vacancy Rate10% weight

Vacant housing units as percentage of total. High vacancy signals declining demand or disinvestment.

Census variable: ACS B25002_003E / B25002_001E

🚧 Additional Metrics Available

Users can enable these metrics in the Customize NVI panel. All sourced from ACS data.

Rent Affordability

Rent as percentage of household income

Housing Stability

Residents who remained in the same home 1+ years

Housing Age

Median year structures were built

Vehicle Access

Vehicle ownership as economic mobility proxy

Family Households %

Family vs non-family household ratio

Graduate Degrees %

Master's, professional, or doctoral degrees

Public Transit Access

Commuters using public transportation

Median Gross Rent

Rental market strength indicator

📊 NVI Score Scale

80–100
Excellent

Thriving neighborhood with strong economic indicators across the board.

65–79
Good

Healthy neighborhood with solid fundamentals. Minor areas for improvement.

45–64
Moderate

Transitional area. May have mixed signals — some strengths, some concerns.

25–44
Declining

Showing signs of economic stress. Could represent opportunity or risk depending on strategy.

0–24
Distressed

Significant economic challenges. High poverty, low investment, high vacancy.

⚠️ Disclaimer

TractSavvy uses publicly available data from the US Census Bureau. NVI scores are calculated using user-configurable metrics and weights. Scores are intended for informational and educational purposes only and should not be the sole basis for real estate, investment, or relocation decisions. Census data is collected through surveys and estimates — it may not reflect real-time conditions. TractSavvy is not affiliated with or endorsed by the US Census Bureau.