Something wrong? Let us know
Checked
State dataMaps & Geospatial
Priority Preservation Areas
Published by Maryland Department of Information Technology · Updated 03/29/2026 · As needed
- Last updated
- 03/29/2026
- First published 11/28/2025
- Update frequency
- As needed
- Formats
- 4
- CSV, JSON, GeoJSON
- Coverage
- Maryland
- Statewide
About this dataset
This GIS dataset contains Priority Preservation Areas (PPAs) adopted by counties under the Agricultural Stewardship Act of 2006. Data are collected from counties by the Maryland Department of Planning (MDP) or digitized by MDP in coordination with local jurisdictions. For more information about the Agricultural Stewardship Act of 2006, see the PPA requirement established in House Bill 2 (2006) for counties seeking state certification of their farmland preservation programs and located in §2-518 of the Agriculture Article. Certification allows a county to retain more locally generated agricultural land transfer tax for land preservation. Not all counties have PPAs.This document describes standard operating procedures for aggregating PPA GIS data. These procedures may not apply to historical data (i.e. records for which the GIS_SRC field is blank). For example, MDP may have realigned historical data from local jurisdictions to parcel polygon boundaries.MDP generally requests updated GIS data after learning of a change to a PPA. Aggregated data may be outdated or incomplete if MDP has not yet received or processed GIS updates from jurisdictions. MDP generally does not alter geometries received from the local jurisdictions.This dataset is a public resource for general information purposes. Only the PPA, as depicted in the County's Comprehensive Plan, is the official PPA. The Maryland Department of Planning cannot guarantee the accuracy of the information contained in this resource. Each user is responsible for determining its suitability for his or her intended use or purpose. The Maryland Department of Planning or the State of Maryland has no liability from any damages or interpretations caused by this resource.
Files and access
Links open the official government source
- CSV downloadopendata.maryland.govCSV
- JSON (SODA API)opendata.maryland.govJSON
- GeoJSONopendata.maryland.govGeoJSON
- XMLopendata.maryland.govXML
API endpoint: https://opendata.maryland.gov/resource/i7v7-xs57.json
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Priority Preservation Areas?
- Maryland Department of Information Technology, part of State of Maryland, publishes this dataset on Maryland Open Data.
- How often is it updated?
- The publisher lists the update frequency as as needed. The last update was on 03/29/2026.
- How do I download it?
- It is available as CSV, JSON, GeoJSON, XML. Use the links in Files and access, which open the official government source.
Similar data from other publishers
- Rural Preservation AreaLos Angeles County, California · County of Los AngelesThis layer classifies various areas of UNINCORPORATED Antelope Valley (within the County of Los Angeles) as Rural Preserve Areas, Rural Town Areas, Rural Town Centers, Open Space, Economic Opportunity Areas, etc., in accordance with the Antelope Valley Area PlCSVGeoJSONShapefileKML+1Updated 06/10/2026
- Fiber Priority AreaCity of BloomingtonDelineates the boundary that will be used during the Bloomington municipal fiber build-out as a priority for the purposes of digital equity.CSVJSONGeoJSONXMLUpdated 03/06/2025
- Conservation AreaCity of Baton Rouge · Department of Information ServicesPolygon geometry with attributes displaying conservation areas as defined by the comprehensive plan, FUTUREBR, in East Baton Rouge Parish, Louisiana.CSVJSONGeoJSONXMLUpdated 04/29/2026Irregularly
- Historic Preservation EasementsDistrict of Columbia · City of Washington, DCHistoric preservation easements are voluntary legal agreements, typically in the form of a deed, that protect a historic property or cultural resource by placing restrictions on the development of, or changes to it. Under the terms of the easement, the propertCSVGeoJSONKMLZIP+2Updated 10/26/2026
- Divvy Equity Priority AreaCity of ChicagoEquity Priority Areas (EPAs) are communities identified using a combination of census, transportation, and public health data. These areas often experience higher levels of need due to historical disinvestment and limited access to resources. For the Divvy proCSVJSONGeoJSONXMLUpdated 06/25/2025
Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/24/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Maryland Open Data and Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher
Share: