Proof of concept.This is an unofficial demo built by Datopian from the City of Newton's public data. The official portal is newton-open-geo-data-newtonmagis.hub.arcgis.com. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from the City of Newton's ArcGIS Hub

Polling Locations

Polling Locations, City of Newton, Massachusetts

Records
40
Formats
5
Last updated
May 22, 2025

Download & API

Polling Locations (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Polling Locations (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Polling Locations (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Polling Locations (map tiles)pmtiles
Vector tiles — embed in a map
Download
Live ArcGIS layer (source)arcgis
Download

Rendered from PMTiles, queried in-browser from GeoParquet — no server. How this works

Schema

FieldTypeValues
Locationstring
Addressstring
Precinctsstring
Activestring2 values: Y (32), N (8)
Precinctstring
Displayinteger0 to 1