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I provide county-level population projections by age, sex, and race in five-year intervals for the period 2020\u20132100 for all U.S. counties. Using historic U.S. census data in temporally rectified county boundaries and race groups for the period 1990\u20132015, I calculate cohort-change ratios (CCRs) and cohort-change differences (CCDs) for eighteen five-year age groups (0\u201385+\u2009), two sex groups (Male and Female), and four race groups (White NH, Black NH, Other NH, Hispanic) for all U.S counties. I then project these CCRs\/CCDs using ARIMA models as inputs into Leslie matrix population projection models and control the projections to the Shared Socioeconomic Pathways. I validate the methods using ex-post facto evaluations using data from 1969\u20132000 to project 2000\u20132015. My results are reasonably accurate for this period. These data have numerous potential uses and can serve as inputs for addressing questions involving sub-national demographic change in the United States.<\/jats:p>","DOI":"10.1038\/sdata.2019.5","type":"journal-article","created":{"date-parts":[[2019,2,5]],"date-time":"2019-02-05T09:01:08Z","timestamp":1549357268000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":96,"title":["Population projections for U.S. counties by age, sex, and race controlled to shared socioeconomic pathway"],"prefix":"10.1038","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9390-5308","authenticated-orcid":false,"given":"Mathew E.","family":"Hauer","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2019,2,5]]},"reference":[{"key":"BFsdata20195_CR1","unstructured":"Smith, S. K., Tayman, J. & Swanson, D. A. State and local population projections: Methodology and analysis. (Springer Science & Business Media, 2006)."},{"key":"BFsdata20195_CR2","unstructured":"Passel, J. S. & Cohn, D. US population projections: 2005\u20132050. (Pew Research Center, 2008)."},{"key":"BFsdata20195_CR3","doi-asserted-by":"publisher","first-page":"1119","DOI":"10.1001\/archneur.60.8.1119","volume":"60","author":"LE Hebert","year":"2003","unstructured":"Hebert, L. E., Scherr, P. A., Bienias, J. L., Bennett, D. A. & Evans, D. A. Alzheimer disease in the us population: Prevalence estimates using the 2000 census. Archives of Neurology 60, 1119\u20131122 (2003).","journal-title":"Archives of Neurology"},{"key":"BFsdata20195_CR4","doi-asserted-by":"publisher","first-page":"830","DOI":"10.1016\/S0140-6736(02)09964-6","volume":"360","author":"S Hales","year":"2002","unstructured":"Hales, S., De Wet, N., Maindonald, J. & Woodward, A. 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