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

Parcels

Property boundaries for the City of Newton

Records
24,105
Formats
4
Last updated
Mar 8, 2024

Download & API

Parcels (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Parcels (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Parcels (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
MAP_PAR_IDstring
Numberinteger0 to 2,500
AddressNumstring
Streetstring
Owner1string
Land_Usestring
Zoningstring
Lot_Sizeinteger0 to 6,446,022
Frontageinteger0 to 23,488
Sale_Date1datetime
Sale_Price1integer0 to 169,371,878
Legal1string
Total_Valinteger0 to 580,179,700
Year_Builtinteger0 to 2,024
Neighborhdstring
Date_Addeddatetime
Date_Modifdatetime
LOC_IDstring
POLY_TYPEstring3 values: FEE (24,064), WATER (26), RAIL_ROW (15)
MAP_NOstring
SOURCEstring4 values: ASSESS (23,996), ANR (69), SUBDIV (39)…
PLAN_IDstring1 values: 1252/1954 (2)
LAST_EDITinteger19,910,101 to 20,250,731
BND_CHKstring
NO_MATCHstring1 values: N (24,105)
YearBuilt_Charstring
LotSize_Charstring
Frontage_Charstring