20210819 12325100 FALSE 20210816 14060900 20210816 14060900 CENSUS2020_TRACTS_POLY 002 11635727.561894 11815629.718605 6992632.821297 7166492.436947 1 Projected GCS_North_American_1983_HARN Linear Unit: Foot_US (0.304801) NAD_1983_HARN_StatePlane_Virginia_North_FIPS_4501_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>PROJCS[&quot;NAD_1983_HARN_StatePlane_Virginia_North_FIPS_4501_Feet&quot;,GEOGCS[&quot;GCS_North_American_1983_HARN&quot;,DATUM[&quot;D_North_American_1983_HARN&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Lambert_Conformal_Conic&quot;],PARAMETER[&quot;False_Easting&quot;,11482916.66666666],PARAMETER[&quot;False_Northing&quot;,6561666.666666666],PARAMETER[&quot;Central_Meridian&quot;,-78.5],PARAMETER[&quot;Standard_Parallel_1&quot;,38.03333333333333],PARAMETER[&quot;Standard_Parallel_2&quot;,39.2],PARAMETER[&quot;Latitude_Of_Origin&quot;,37.66666666666666],UNIT[&quot;Foot_US&quot;,0.3048006096012192],AUTHORITY[&quot;EPSG&quot;,2924]]</WKT><XOrigin>-110512499.99992953</XOrigin><YOrigin>-88857999.999874651</YOrigin><XYScale>3906.2499963620194</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0005120000004768374</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2924</WKID><LatestWKID>2924</LatestWKID></ProjectedCoordinateSystem> FGDC 1.0 150000000 5000 FGDC CSDGM Metadata Loudoun County, VA, OMAGI Metadata Specialist (703)771-5778 (703)771-5075 MS 65 1 Harrison Street SE, 2nd Floor Leesburg VA 20175 US mapping@loudoun.gov 8:00-4:30 EST, M-F 20210816 ArcGIS Metadata 1.0 Loudoun County, VA OMAGI Public Information Counter (703)771-5778 (703)771-5075 MS 65 1 Harrison Street S.E., 2nd floor Leesburg VA 20175 US mapping@loudoun.gov 8:00-4:30 EST, M-F Loudoun County distributes spatial data in ArcGIS database or shapefile & DXF format for the cost of reproduction. Countywide spatial datasets may be purchased for $22 per DVD for up to 4.5 GB of data. There is a $100 surcharge to purchase countywide topography, and a $3 charge if the item is to be mailed. If the customer wants the data in DXF format and/or would like OMAGI to custom select specific geographic areas of the County, there is an additional $7 per 15 minute increment labor charge. Select aerial imagery is also available. Size limit: 4.5 GB. Visit our website at: http://www.loudoun.gov/omagi, click on "Loudoun County Mapping Documents & Order Forms." The "Forms" directory will lead you to custom & standard (countywide) data order forms. Hardcopy maps may also be available; please contact the Mapping Office Public Information Counter for more information regarding all data requests. DXF AutoCad Digital Exchange File GDB ESRI Personal Geodatabase Feature Class SHP ESRI Shapefile Tiles File Geodatabase Feature Class Census Tracts of Loudoun County, VA (2020) Loudoun County, VA, Department of Management and Financial Services vector digital data withheld 2012-01-19T00:00:00 <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This GIS layer contains the geographical boundaries of the 2020 census tracts for Loudoun County, Virginia. The 2020 Census tract boundaries are used for Census Bureau statistical data tabulation purposes, including the 2020 Decennial Census and American Community Surveys. Census tracts are part of the sub-county census geography hierarchy of tracts, block groups, and blocks. The three census geographies nest to each other, forming a hierarchy of census tract, followed by block groups, and then blocks, with blocks being the smallest. A census tract consists of one or more census block groups and is a cluster of census blocks within the same census tract. Tracts are uniquely identified within a County by a six digit number. The last two digits will be zeros unless earlier divisions of the census tract occurred as a result of population growth. Tracts are designed to be relatively homogeneous units with respect to population characteristics, economic status, and living conditions. They generally have at least 1,200 people or 480 housing units, and no more than 8,000 people or 3,200 housing units, with an optimal size of 4,000 people or 1,600 housing units. This 2020 Census tract GIS layer's boundaries are based on the U.S. Census Bureau Census 2020 TIGER/Line files. The boundaries are an extract of aerial photography and cartographic information, such as roads and streams, from the Loudoun County GIS system. Census tracts are bounded on all sides by visible features, such as roads, streams, lakes, power lines, and railroad tracks, and/or by non-visible boundaries such as town and county boundaries, and short line-of-sight extensions of streets and roads.</SPAN></P></DIV></DIV></DIV> Census tracts are used in demographic analyses of Loudoun County. Census tracts are used to gain a detailed picture of population, housing, economic, and other demographic characteristics within a given area. Loudoun County, VA, Department of Management and Financial Services Demographer (703) 777-0563 1 Harrison St, SE MS 41 Leesburg VA 20175 US 8:30-5:00 EST, M-F none; Employee generated County Loudoun Virginia 51107 none; Employee generated Census American Community Survey tract demographic boundary boundaries County Census American Community Survey Loudoun tract Virginia 51107 boundaries demographic boundary boundaries <DIV STYLE="text-align:Left;"><DIV><P><SPAN>These data were generated for use by Loudoun County and are available to the public. These data are intended for use at 1:2400 scale or smaller. Acknowledgement of Loudoun County would be appreciated in products derived from this data.</SPAN></P></DIV></DIV> Every reasonable effort has been made to assure the accuracy of these data. Loudoun County, Virginia does not assume any liability arising from the use of these data. These data are provided without warranty of any kind, expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular service. Reliance on these data is at the risk of the user. Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362 Loudoun County's tracts were delineated by Loudoun County Government during the Census Bureau's Participant Statistical Areas Program for the 2010 Census. The 2010 Census tract layer has been modified from the Census Bureau's Tiger line file. Users should be aware that the Census's Tiger line data is devised from a mix of national and local GIS data sets. When the Tiger line data is overlaid with Loudoun County Government's detailed GIS layers it can be determined that the Census Bureau's Tiger line boundaries in some cases are slightly off from the actual location of the physical features, natural features, and governmental units such as town boundaries that they are designated to follow. The 2010 Loudoun census tract layer was generated by Loudoun County so that the tract boundaries would overlay with the features in Loudoun County's GIS data sets that the boundary are designated to follow. The 2010 Census tract boundaries are used for Census Bureau statistical data tabulation purposes, including the 2010 Decennial Census and American Community Surveys. The American Community Survey replaced the long form of the decennial Census. The American Community Survey data sets are released annually. The 2010 to 2019 American Community Survey one-year data sets, the 2008-2010 through 2018-2020 three-year data sets, and the 2006-2010 through 2016-2020 five-year data sets will all use the 2010 census tract geographies for statistical tabulation purposes. Data are stored in the corporate ArcSDE Geodatabase as a polygon feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88), US Survey foot units. 1 -77.963438 -77.323982 39.326190 38.844269 This metadata reflects the source Geodatabase format and specific elements may not apply if your data is exported to SHP or DXF products. User must be aware that changes to data schema occur during data export that may not be reflected in this metadata, which represents Loudoun County's corporate geodatabase. Acknowledgement of Loudoun County would be appreciated in the use of this metadata. Features may have been eliminated or generalized due to scale and intended use. To assist Loudoun County, Virginia in the maintenance of the data, please provide any information concerning discovered errors, omissions, or other discrepancies found in the data. Topologically clean Features may have been eliminated or generalized due to scale and intended use. To assist Loudoun County, Virginia in the maintenance of the data, please provide any information concerning discovered errors, omissions, or other discrepancies found in the data. Retention of attribute accuracy throughout the personal geodatabase or shapefile to ArcSDE geodatabase feature class coversion process was ensured by a manual or automatic QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have, on a record by record basis, identical attribution when comparing all concatenated fields to all the user-defined attribution. Retention of coordinate accuracy throughout the personal geodatabase or shapefile to ArcSDE geodatabase feature class conversion process was ensured by a manual or automatic QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have the same record total, and on a record by record basis, area, perimeter, and length differential of less than +/- 0.5%. Demographic data source for population, housing units, and households for census tracts U.S. Census Bureau, 2010 Decennial Census summary file. U.S. Census Bureau 2011-02-07T00:00:00 publication date Provided the foundation upon which census blocks were drawn. The 2010 Census blocks were the basis for devising the census tract boundaries. U.S. Census Bureau TIGER/Line files U.S. Census Bureau 2010-10-04T00:00:00 Loudoun County Government GIS provided base layer for digitizing block boundaries Loudoun County GIS data Census block shapefile downloaded from the U.S. Census Bureau. Overlaid the Census Bureau shapefile with with Loudoun County Government's detailed GIS layers to determine the actual location of the physical features, natural features, and governmental units such as town boundaries that the census blocks are designated to follow. Digitized lines using Loudoun County Government's detailed GIS layers. Created the census tract layer by spatially dissolving the census block layer. 2011-01-01T00:00:00 Loudoun County, VA Office of Mapping and Geographic Information (OMAGI) Land Records Staff 75 Loudoun County 75 dataset EPSG 8.9.3(9.0.0) Simple FALSE 75 TRUE FALSE CENSUS2020_TRACTS_POLY Feature Class 75 polygon feature class ESRI OBJECTID OBJECTID OID 4 0 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. TR_FIPSSTCO TR_FIPSSTCO String 5 0 0 Federal Information Processing State and County Code. It is a five digit code that identifies the state and county of the census tract. The first two digits designate the state and are the state FIPS code. The last three digits designate the county and are the County FIPS code. Loudoun County Five digit code that identifies the state and county of the census tract. The first two digits designate the state and are the state FIPS code. The last three digits designate the county and are the County FIPS code. TR_UPD_DATE TR_UPD_DATE Date 8 0 0 Date feature class created or modified. Loudoun County User generated text TR_TRACT2020 TR_TRACT2020 String 6 0 0 Identifying six digit number of the census tract. Loudoun County TR_GEOID2020 TR_GEOID2020 String 19 0 0 The federal information process codes. Loudoun County TR_POP2020 TR_POP2020 Integer 4 0 0 Total population of the tract. Loudoun County TR_HHPOP2020 TR_HHPOP2020 Integer 4 0 0 Total population minus group quarters population Loudoun County TR_GQPOP2020 TR_GQPOP2020 Integer 4 0 0 Total population in group quarters Loudoun County TR_HUNITS2020 TR_HUNITS2020 Integer 4 0 0 Housing unit count for the tract. Loudoun County TR_HHLDS2020 TR_HHLDS2020 Integer 4 0 0 Occupied housing units within census tract. Loudoun County TR_UPD_USER TR_UPD_USER SmallInteger 2 0 0 Not for public distribution. Internal User ID of editor creating or modifying feature class. Loudoun County SHAPE Shape Geometry 0 0 0 Feature geometry. ESRI Coordinates defining the features. Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Shape_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. TR_FIPSSTCO: Federal Information Processing State and County Code 51107 - Virginia (51) and Loudoun County (107)