Format parquet

Parcel Data in GeoParquet

Columnar, compressed, and typed. Built for reading one column of ten million parcels rather than one parcel at a time.

Datasets available: 0
Extension: .parquet
Media type: application/vnd.apache.parquet
Geometry: yes

Take it when

Analytics at scale — multi-county studies, DuckDB, Spark, and anything where the file lives in object storage and you want to scan it without downloading all of it.

Watch out for

Desktop GIS support is recent and uneven; check your GDAL is 3.8 or newer before assuming QGIS will open it.

Reads it DuckDBGeoPandasApache SparkGDAL/OGR 3.8+

Counties available as GeoParquet

Nothing is published as GeoParquet yet. Every dataset here is converted on publish, so this fills in as the catalog grows.

Other formats

shp Shapefile The format every desktop GIS reads without being asked, and the one most county assessors still publish. geojson GeoJSON Plain text, WGS84, readable in a browser and in a code review. The web's parcel format. gpkg GeoPackage One SQLite file, full-length field names, real CRS metadata, no sidecar files to lose. csv CSV The attribute table with the geometry left behind — parcel IDs, owners, addresses, valuations.