Alzheimer's Disease Prevalence
Database Detail
| Name | Alzheimer's Disease Prevalence |
| Summary | Estimated prevalence of Alzheimer's Disease by state and county in 2020 |
| Additional Background |
This database reports the estimated prevalence of persons age 65 and older with Alzheimer’s Disease in the U.S., states, and counties in 2020. Prevalence is defined as the share (or percent) of population age 65 and older living with Alzheimer's Disease dementia. We do not anticipate updates to this database. For more information, see the original publication:Dhana, K., Beck, T., Desai, P., Wilson, R.S., Evans, D.A. and Rajan, K.B. (2023), Prevalence of Alzheimer’s dementia in the 50 U.S. states and 3142 counties: A population estimate using the 2020 bridged-race postcensal from the National Center for Health Statistics. Alzheimer's Dement., 19: e074430. https://doi.org/10.1002/alz.074430
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| Geographic Coverage | U.S., States, Counties |
| Periodicity | Annually |
| Series Begins/Ends | 2020 - 2020 |
| Data Source | National Institutes of Health |
| Summary | Estimated prevalence of Alzheimer's Disease by state and county in 2020 |
| Geographic Coverage | U.S., States, Counties |
| Series Begins/Ends | 2020 - 2020 |
| Reporting Period | Annually |
| New Database added | Aug. 10, 2025 |
| Next update | None |
| Original Source | National Institutes of Health |
| Sample File | Sample_CSV__Alzheimer's_Disease_Prevalence.zip |
| Number of records | 15,816 |
| File Size | 1.2MB |
| Latest data available | Year 2020 |
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Source (APA): |
StatsUSA. (2025, August 10). Alzheimer's Disease Prevalence. https://statsusa.org/ca/stats/alzheimer's-disease-prevalence.html?bid=%27Ng%3D%3D%27&dbc=cmFuZF91c2E%3D
Set APA as default format
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This database reports the estimated prevalence of persons age 65 and older with Alzheimer’s Disease in the U.S., states, and counties in 2020. Prevalence is defined as the share (or percent) of population age 65 and older living with Alzheimer's Disease dementia. We do not anticipate updates to this database. For more information, see the original publication:Dhana, K., Beck, T., Desai, P., Wilson, R.S., Evans, D.A. and Rajan, K.B. (2023), Prevalence of Alzheimer’s dementia in the 50 U.S. states and 3142 counties: A population estimate using the 2020 bridged-race postcensal from the National Center for Health Statistics. Alzheimer's Dement., 19: e074430. https://doi.org/10.1002/alz.074430
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APA
Format or style, from the American Psychological Association, is commonly used for footnotes in behavioral and social science publications. APA citation is an author-year-system. It is one of the most common styles used and taught at colleges and high schools. See here for more details, including APA formatting for bibliographies.Chicago
Format or style (also known as Turabian), created by the University of Chicago, is commonly used for footnotes in history, business, and fine arts and occasionally in the humanities, sciences, and social sciences. The Chicago style has two systems of citation. The author-date system (most common in social sciences and sciences) cites sources parenthetically in the text. The notes and bibliography system (most common in humanities) cites sources in numbered footnotes or endnotes which correspond to a superscript number in the text. See here for more details, including Chicago formatting for bibliographies.MLA
Modern Language Association (MLA) format or style is most commonly used for footnotes in the language arts, cultural studies, liberal arts, and humanities. MLA uses short parenthetical citations within the text that are linked to an alphabetical list of work cited at the end of the document. MLA commonly cites using this format: author's last name, first name, title, publication, edition or chapter, and year. See here for more details, including MLA formatting for bibliographies.AMA
American Medical Association (AMA) format or style is most commonly used for footnotes in medicine, biomedical research, nursing, dentistry, and other life sciences. AMA uses numerical superscript for citing sources in-text and refers to a list at the end of the work. These references appear in sequential order of when the sources were cited, instead of alphabetical order. See here for more details, including AMA formatting for bibliographies.
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