: Layered information for District Police PSAs , Advisory Neighborhood Commissions (ANCs) , or ZIP code polygons.
: Information related to natural resource conservation or social services like those listed in the DC DHS Ward 7 Vision . Access & Compatibility SwashingtonDC.7z
: Uses the LZMA compression algorithm to significantly reduce the size of large geospatial datasets, making it easier to download and store than standard ZIP files. : Layered information for District Police PSAs ,
: Datasets from the Interactive Zoning Info System (IZIS) including current zoning regulations and boundary maps. Advisory Neighborhood Commissions (ANCs)
: The 7z format can split very large city models or datasets into smaller parts for easier transfer.