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  "description" : "This layer shows residence one year ago for those 1 year and older. This is shown by tract, county, and state centroids. This service is updated annually to contain the most currently released American Community Survey (ACS) 5-year data, and contains estimates and margins of error. There are also additional calculated attributes related to this topic, which can be mapped or used within analysis.  \u003cdiv\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003eThis layer is symbolized to show the count and percent of people one year and over who lived in a different state one year ago.  To see the full list of attributes available in this service, go to the "Data" tab, and choose "Fields" at the top right. \u003cdiv\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003e\u003cdiv\u003e\u003cb\u003eCurrent Vintage\u003c/b\u003e: 2019-2023\u003c/div\u003e\u003cdiv\u003e\u003cb\u003eACS Table(s)\u003c/b\u003e: B07204 (Not all lines of this ACS table are available in this feature layer.)\u003c/div\u003e\u003cdiv\u003e\u003cb\u003eData downloaded from\u003c/b\u003e: \u003ca href'https://www.census.gov/data/developers/data-sets.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eCensus Bureau's API for American Community Survey\u003c/a\u003e \u003c/div\u003e\u003cdiv\u003e\u003cb\u003eDate of API call\u003c/b\u003e: December 12, 2024\u003c/div\u003e\u003cdiv\u003e\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\u003c/div\u003e\u003cdiv\u003e\u003cb\u003eThe United States Census Bureau's American Community Survey (ACS):\u003c/b\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003ca href'https://www.census.gov/programs-surveys/acs/about.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eAbout the Survey\u003c/a\u003e\u003cbr /\u003e\u003c/li\u003e\u003cli\u003e\u003ca href'https://www.census.gov/programs-surveys/acs/geography-acs.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eGeography & ACS\u003c/a\u003e\u003cbr /\u003e\u003c/li\u003e\u003cli\u003e\u003ca href'https://www.census.gov/programs-surveys/acs/technical-documentation.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eTechnical Documentation\u003c/a\u003e\u003cbr /\u003e\u003c/li\u003e\u003cli\u003e\u003ca href'https://www.census.gov/programs-surveys/acs/news.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eNews & Updates\u003c/a\u003e\u003cbr /\u003e\u003c/li\u003e\u003c/ul\u003e\u003cdiv\u003eThis ready-to-use layer can be used within ArcGIS Pro, ArcGIS Online, its configurable apps, dashboards, Story Maps, custom apps, and mobile apps. Data can also be exported for offline workflows. For more information about ACS layers, visit the \u003ca href'https://acs-hosted-feature-layers-faq-esri.hub.arcgis.com/' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eFAQ\u003c/a\u003e. Please cite the Census and ACS when using this data.\u003c/div\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003e\u003cdiv\u003e\u003cb\u003eData Note from the Census:\u003c/b\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003eData are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of error. The margin of error can be interpreted as providing a 90 percent probability that the interval defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds) contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a discussion of nonsampling variability, see \u003ca href'https://www.census.gov/programs-surveys/acs/technical-documentation/code-lists.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eAccuracy of the Data\u003c/a\u003e).  The effect of nonsampling error is not represented in these tables.\u003c/div\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003e\u003cb\u003eData Processing Notes:\u003c/b\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003eThis layer is updated automatically when the most current vintage of ACS data is released each year, usually in December. The layer always contains the latest available ACS 5-year estimates. It is updated annually within days of the Census Bureau's release schedule. \u003ca href'https://www.census.gov/programs-surveys/acs/news/data-releases.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eClick here\u003c/a\u003e to learn more about ACS data releases.\u003cbr /\u003e\u003c/li\u003e\u003cli\u003eBoundaries come from the \u003ca href'https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-geodatabase-file.html' style'color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' rel'nofollow ugc'\u003eUS Census TIGER geodatabases,\u003c/a\u003e specifically, the National Sub-State Geography Database (named tlgdb_(year)_a_us_substategeo.gdb). Boundaries are updated at the same time as the data updates (annually), and the boundary vintage appropriately matches the data vintage \u003ca href'https://www.census.gov/programs-surveys/acs/geography-acs/geography-boundaries-by-year.html' style'color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' rel'nofollow ugc'\u003eas specified by the Census\u003c/a\u003e. These are Census boundaries with water and/or coastlines erased for cartographic and mapping purposes. For census tracts, the water cutouts are derived from a subset of the \u003ca href'https://www2.census.gov/geo/tiger/TGRGDB20/tlgdb_2020_a_us_areawater.gdb.zip' style'color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' target'_blank' rel'nofollow ugc noopener noreferrer'\u003e2020 Areal Hydrography boundaries offered by TIGER\u003c/a\u003e. Water bodies and rivers which are 50 million square meters or larger (mid to large sized water bodies) are erased from the tract level boundaries, as well as additional important features. For state and county boundaries, the water and coastlines are derived from the coastlines of the 2023 500k \u003ca href'https://www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html' style'color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' rel'nofollow ugc'\u003eTIGER Cartographic Boundary Shapefiles\u003c/a\u003e. These are erased to more accurately portray the coastlines and Great Lakes. The original AWATER and ALAND fields are still available as attributes within the data table (units are square meters).\u003c/li\u003e\u003cli\u003eThe States layer contains 52 records - all US states, Washington D.C., and Puerto Rico\u003c/li\u003e\u003cli\u003eCensus tracts with no population that occur in areas of water, such as oceans, are removed from this data service (Census Tracts beginning with 99).\u003c/li\u003e\u003cli\u003ePercentages and derived counts, and associated margins of error, are calculated values (that can be identified by the "_calc_" stub in the field name), and abide by the specifications \u003ca href'https://www.census.gov/content/dam/Census/library/publications/2020/acs/acs_general_handbook_2020_ch08.pdf' style'color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' target'_blank' rel'nofollow ugc noopener noreferrer'\u003edefined by the American Community Survey\u003c/a\u003e.\u003c/li\u003e\u003cli\u003eField alias names were created based on the Table Shells file available from the \u003ca href'https://www.census.gov/programs-surveys/acs/technical-documentation/table-shells.html' target'_blank' rel'nofollow ugc noopener noreferrer'\u003eAmerican Community Survey Summary File Documentation page\u003c/a\u003e.\u003cbr /\u003e\u003c/li\u003e\u003cli\u003eNegative values (e.g., -4444...) have been set to null, with the exception of -5555... which has been set to zero. These negative values exist in the raw API data to indicate the following situations:\u003c/li\u003e\u003cul\u003e\u003cli\u003eThe margin of error column indicates that either no sample observations or too few sample observations were available to compute a standard error and thus the margin of error. A statistical test is not appropriate.\u003c/li\u003e\u003cli\u003eEither no sample observations or too few sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest interval or upper interval of an open-ended distribution.\u003cbr /\u003e\u003c/li\u003e\u003cli\u003eThe median falls in the lowest interval of an open-ended distribution, or in the upper interval of an open-ended distribution. A statistical test is not appropriate.\u003c/li\u003e\u003cli\u003eThe estimate is controlled. A statistical test for sampling variability is not appropriate.\u003cbr /\u003e\u003c/li\u003e\u003cli\u003eThe data for this geographic area cannot be displayed because the number of sample cases is too small.\u003c/li\u003e\u003c/ul\u003e\u003c/ul\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e", 
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