Allegheny County Block Areas

This dataset overlays a grid on the County to assist in locating a parcel. The grid squares are 3,500 by 4,500 square feet. The data was derived from original MAPINDX: Map Index Sheets from Block and Lot Grid of Property Assessment and based on aerial photography. Tiles are numbered in a clockwise spiral fashion starting with #1 at the point in downtown Pittsburgh. Each tile contains 16 Blocks. Each Index Sheet contains 16 lot/block sheets, labeled from left to right, top to bottom (4 across, 4 down): A, B, C, D, E, F, G, H, J, K, L, M, N, P, R, S. The first (4) numeric characters in a parcelID indicate the Index sheet in which the parcel can be found, the alpha character identifies the block in which most (or all) of the property lies.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier 31d1d279-7f81-466d-8aca-83a78719eaf8
landingPage http://openac-alcogis.opendata.arcgis.com/datasets/dfb2d043543443b19c46f746e0d6a7cf_0
modified 2023-05-13T17:35:50.868942
old-spatial {"type": "Polygon", "coordinates": [[[-80.3746,40.18],[-80.3746,40.6852],[-79.6693,40.6852],[-79.6693,40.18],[-80.3746,40.18]]]}
publisher Allegheny County
resource-type Dataset
source_datajson_identifier true
source_hash 482464ec1806ee6fc17eb55357a4a8bab922ddff
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-80.3746,40.18],[-80.3746,40.6852],[-79.6693,40.6852],[-79.6693,40.18],[-80.3746,40.18]]]}
theme {"Civic Vitality & Governance"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • _etl
  • boundaries
  • facilities
  • grid
  • map-index
  • property
isopen False
license_id notspecified
license_title License not specified
maintainer Eli Thomas
maintainer_email gishelp@alleghenycounty.us
metadata_created 2025-09-23T19:27:23.696832
metadata_modified 2025-09-23T19:27:23.696839
notes This dataset overlays a grid on the County to assist in locating a parcel. The grid squares are 3,500 by 4,500 square feet. The data was derived from original MAPINDX: Map Index Sheets from Block and Lot Grid of Property Assessment and based on aerial photography. Tiles are numbered in a clockwise spiral fashion starting with #1 at the point in downtown Pittsburgh. Each tile contains 16 Blocks. Each Index Sheet contains 16 lot/block sheets, labeled from left to right, top to bottom (4 across, 4 down): A, B, C, D, E, F, G, H, J, K, L, M, N, P, R, S. The first (4) numeric characters in a parcelID indicate the Index sheet in which the parcel can be found, the alpha character identifies the block in which most (or all) of the property lies.
num_resources 6
num_tags 14
title Allegheny County Block Areas