Census Bureau creates, which NHGIS staff edited to produce all pre-1990 boundaries. The GIS boundary files are based on the TIGER/Line Files that the U.S. Documentation for most sources is available on the Tabular Data Documentation page. Most of this work was completed by Michael Haines, Donald Bogue, Andrew Beveridge and their respective research teams. For earlier censuses, NHGIS data are generally derived from secondary sources: separate projects which have, over the course of several decades, undertaken the arduous conversion of pre-computer-age historical data from print media to a digital, machine-readable form. For censuses since 1970, the NHGIS obtained digital data directly from the Census Bureau. The original source of most of the aggregate data, with a few exceptions, is the U.S. What is the source of NHGIS data? Back to Top So if you are trying to find your great-great-great grandfather who homesteaded in the late 1800s, you will not have any luck with NHGIS data. No individual-level records, with or without personally identifiable information, are included anywhere in the NHGIS. The NHGIS specifically provides spatially aggregated census data: data summarizing individuals within particular areas, such as states or counties, where the "individuals" might be persons, housing units, farms, libraries, newspapers or any other features that were at some point counted in a U.S. I have a suggestion for how you can improve your website! Do you want to hear it?Īggregate data summarize sets of individuals through counts, sums, means or other aggregate statistics. Why do most historical shapefiles have both a "2000 TIGER/Line +" and a "2008 TIGER/Line +" version? NHGIS Project Questions Why don't newer shapefiles align with older shapefiles? Why isn’t the GISJOIN the same from 1 decade to the next for a census tract that doesn’t seem to change? What are the units of the SHAPE_AREA and SHAPE_LEN fields? What projected coordinate system are the GIS files in? Why am I missing columns of data when I bring the. OK, I downloaded the data tables and the GIS files. I downloaded some GIS files, but where are the census data? I don’t have Esri ArcGIS! Can I still map NHGIS data? Something is wrong with the data I downloaded. What do the field names (e.g., AG3001, B5P001) in an NHGIS data file mean? Why do I receive so many data files in my downloaded zipped file? Which ACS year range is best for comparisons with decennial censuses? Questions about Downloaded Data Should I use 1-year, 3-year, or 5-year ACS data? What is the American Community Survey (ACS)? How long does a data extract take? Questions about the American Community Survey Why can’t I get data for census tracts from before 1910?Ĭan I just get a copy of every data table you have? Why can’t I select data for a single county, place, or metro area? This project also benefited from support provided by the University of Minnesota’s Minnesota Population Center (P2CHD041023) and the Bowling Green State University’s Center for Family and Demographic Research (P2CHD050959).Does NHGIS have data for Puerto Rico, the US Virgin Islands, or other territories?ĭo I need special statistical software like SPSS, SAS, or Stata to use NHGIS data? Data Access Questions NCHAT is funded by the Eunice Kennedy Shriver National Institute of Child Health & Human Development, The Office of the Director, and the National Institute on Minority Health and Health Disparities ( 5R01HD094081-04, 1U01HD108779-01, & 1 R03HD107126-01). NCHAT Co-Principal Investigators: Claire Kamp Dush and Wendy Manning To Join the NCHAT listserve to receive updates about the data release and information about upcoming trainings, please provide your name and email here: z.umn.edu/nchat Upcoming NCHAT Presentations and Workshops.NCHAT data is currently available through ICPSR, access it here! The survey and time diary with experience sampling methods focus on relationship functioning, emotion regulation, discrimination, racial trauma, physical health, psychological well-being, health behaviors, stressors, and time use. The sample includes 3,642 main respondents and 1,515 spouses/partners. The National Couples’ Health and Time Study (NCHAT) is a nationally-representative, multi-method study of cohabiting and married individuals ages 20 to 60 who were in a same- or different-gender couple in the United States during the COVID-19 pandemic. Undergraduate Training Expand Undergraduate Training menu.Training Program In Population Health Science.Graduate Training Expand Graduate Training menu.Postdoctoral Training Expand Postdoctoral Training menu.Member Services Expand Member Services menu.Funding Opportunities Expand Funding Opportunities menu.
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