The file refers to a compressed archive typically used in geospatial or city planning data contexts, specifically for the City of Washington, DC .
: Layered information for District Police PSAs , Advisory Neighborhood Commissions (ANCs) , or ZIP code polygons. 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. The file refers to a compressed archive typically