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This data is used as a source for the population and demographic estimates and by Arlington Public Schools for student generation estimates by housing type.Contact: Department of Environmental ServicesData Accessibility: Publicly AvailableUpdate Frequency: As NeededLast Revision Date: 10/2/2025Creation Date: 5/1/2024Feature Dataset Name: CPHDLayer Name: MHUD_polyMetadata document link", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102746, "latestWkid": 2283, "xyTolerance": 0.02, "zTolerance": 0.02, "mTolerance": 0.001, "falseX": -110512500, "falseY": -88858000, "xyUnits": 1600, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "spatialReference": { "wkid": 102746, "latestWkid": 2283, "xyTolerance": 0.003280833333333333, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -110512500, "falseY": -88858000, "xyUnits": 3048.0060960121928, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 }, "copyrightText": "Arlington County, Virginia; 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