Proof of concept.This is an unofficial demo built by Datopian from Longford County Council's public data. The official portal is countycouncil-longford.hub.arcgis.com. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from Longford County Council's ArcGIS Hub

Architectural Conservation Areas

Adopted Architectural Conservation Area

Records
2
Formats
5
Last updated
Aug 17, 2026

Download & API

Adopted Architectural Conservation Area (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Adopted Architectural Conservation Area (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Adopted Architectural Conservation Area (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Adopted Architectural Conservation Area (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
Namestring
PLAN_LINKstring1 values: https://www.longfordcoco.ie/services/planning/longford-county-development-plan-2021-2027 (2)
PLAN_NAMEstring1 values: Longford County Development Plan 2021 - 2027 (2)
PLAN_FROMnumber
PLAN_TOnumber
PLAN_LEVELstring1 values: County Development Plan (2)
SHAPE_STArnumber173,578 to 511,864
SHAPE_STLenumber3,308 to 3,360