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8,771 datasets for “open data”
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Baltimore Metro Subway Line
opendata.maryland.govUpdated 22 Jul 2025
Maryland Transit Administration METRO routes. The 15.5-mile, 14-station Metro Subway system operates every. 8-10 …
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Historic Survey
internal.open.piercecountywa.govUpdated 5 Jul 2024
… Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse …
- CSV
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Voting Centers and Ballot Sites
internal.open.piercecountywa.govUpdated 8 Sept 2026
… Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse …
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Possible Wetlands
internal.open.piercecountywa.govUpdated 14 Nov 2026
A union of wetland polygon datasets used in unincorporated Pierce County to indicate the possible presence of wetlands …
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Pierce County Boundary (polygon)
internal.open.piercecountywa.govUpdated 30 Jun 2024
… Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse …
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Foothills Trail - Pipes
internal.open.piercecountywa.govUpdated 5 Jul 2024
… Only drainage associated directly with the Foothills Trail is included in this dataset. Please read metadata for additional …
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MD COVID-19 - Vaccinations by County
Maryland Department of Health Prevention and Health Promotion Administration, MDH PHPAUpdated 21 Apr 2023
Regarding all Vaccination Data The date of Last Update is 4/21/2023. Additionally on 4/27/2023 …
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Weather Stations
internal.open.piercecountywa.govUpdated 28 Oct 2026
… Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse …
- CSV
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Election Precincts
internal.open.piercecountywa.govUpdated 13 Sept 2026
… Any data download constitutes acceptance of the Terms of Use: http://matterhorn.piercecountywa.gov/Disclaimer/PierceCountyGISDataTermsofUse.pdf
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Deep and/or Fast Flowing Floodway
internal.open.piercecountywa.govUpdated 1 Nov 2026
… Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse …
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Chambers Creek Property - Treatment Plant
internal.open.piercecountywa.govUpdated 5 Jul 2024
This polygon dataset is a representation of the building footprints of the Chamber's Bay Regional Wastewater Treatment …
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Senior Executive Expenses 2023-24 Q3 / Frais de déplacement et autres dépenses de l'exécutif supérieur 2023-2024 T3
Finance and Treasury Board / Finances et Conseil du TrésorUpdated 29 Jan 2024
… senior executive travel and other expenses in an open data format. Reported expenses include amounts reimbursed through the …
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RTSQQ
internal.open.piercecountywa.govUpdated 2 Oct 2026
… Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse …
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County Boundaries - Detailed
opendata.maryland.govUpdated 22 Jul 2025
… The Maryland land county boundaries were built using political county boundaries and the National Hydrology Data (NHD). Land …
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Boat Ramps
internal.open.piercecountywa.govUpdated 16 Mar 2023
… Any data download constitutes acceptance of the Terms of Use(https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse …
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Development Engineering - Short Plats
internal.open.piercecountywa.govUpdated 1 Nov 2026
… Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/Disclaimer/PierceCountyGISDataTermsofUse …
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National Register Historic Places
opendata.maryland.govUpdated 27 Feb 2026
The National Register of Historic Places recognizes districts, buildings, structures, objects, and sites for their significance in American …
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Development Rights (TDR/PDR)
internal.open.piercecountywa.govUpdated 28 Jun 2024
… Both "sending" and "receiving" parcels are included in this data. Please read metadata for additional information (https://matterhorn …
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Historic Railroads
internal.open.piercecountywa.govUpdated 5 Jul 2024
… Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse …
- CSV
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Waterfowl Areas
opendata.maryland.govUpdated 22 Jul 2025
A digital polygon layer showing waterfowl concentration and staging areas along Maryland's tidal Chesapeake Bay watershed.
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