The Child Opportunity Index 3.0-2023 census tract data is available for download on this page.
To distinguish between different releases, each COI 3.0 release is labeled with the most recent year included. The initial release of COI 3.0 (published in 2024) included data from 2012 to 2021 and has been relabeled as COI 3.0-2021. The current release, COI 3.0-2023, extends data coverage through 2023. We recommend that all new users and new projects use COI 3.0-2023.
For more information on COI 3.0 releases, please see the COI Release Notes.
The Child Opportunity Index (COI) 3.0 is a composite index of neighborhood conditions and resources that, per the research evidence, matter for children's healthy development. COI 3.0 is based on 44 component indicators spanning three domains (education, health and environment, and social and economic) and 14 subdomains. Data is available for virtually all U.S. 2010 and 2020 census tracts, i.e., census tracts as defined for the 2010 and 2020 Decennial Censuses, respectively.
For an overview of new features in COI 3.0 and a comparison to COI 2.0, please see What's New in COI 3.0. More information on the COI is available on our COI overview page, including the COI 3.0 technical document.
Using the links below, you can download COI 3.0 data for the overall index, its three domains and 14 subdomains, as well as child population counts by race/ethnicity for both 2010 and 2020 census tracts.
Clicking on one of the links triggers a download of a ZIP folder including the data and data dictionary in CSV format.
By using this data, you agree to abide by diversitydatakids.org's Terms and Conditions.
COI 3.0-2023, 2020 census tracts
Child Opportunity Levels, Scores and composite z-scores for 14 subdomains (2020 census tracts)
Number of children aged 0-17 years by race/ethnicity (2020 census tracts)
Suggested citation: diversitydatakids.org. 2025. “Child Opportunity Index 3.0-2023 Data for 2020 Census Tracts." https://www.diversitydatakids.org/research-library/child-opportunity-index-30-2023-census-tract-data.
COI 3.0-2023, 2010 census tracts
Child Opportunity Levels, Scores and composite z-scores for 14 subdomains (2010 census tracts)
Number of children aged 0-17 years by race/ethnicity (2010 census tracts)
Suggested citation: diversitydatakids.org. 2025. “Child Opportunity Index 3.0-2023 Data for 2010 Census Tracts." https://www.diversitydatakids.org/research-library/child-opportunity-index-30-2023-census-tract-data.
Additional Info
Version: COI 3.0-2023
Last updated: July 2025
Year(s): Data available from 2012 to 2023.
Source: The 44 indicators included in the COI are compiled from many sources. Please refer to the technical document for details. Child population counts are taken from the American Community Survey.
Use Cases: To learn how the COI has been used by organizations and researchers, please see our impact stories.
Visualizations: Interactive COI 3.0-2023 map
