Maryland · parcel data

Maryland parcel data

PropRaven serves 2,892,314 distinct parcels for Maryland across 24 counties at serving epoch 2026-08-28. Some Maryland parcels are currently attributed to more than one county in the serving database, so per-county totals are not published until that is corrected; the coverage rates below are statewide. 93.8% of those records carry a situs address, 94.3% a usable coordinate, 85.1% an owner name, 92.2% a total assessed value above zero and 72.4% a parcel polygon.

Coverage at a glance

Distinct parcels
2,892,314
Counties with data
24
Situs address
93.8%5,096,924 records
Geocoded
94.3%5,126,351 records
Owner name
85.1%4,626,749 records
Assessed value
92.2%5,010,642 records
Parcel polygon
72.4%3,932,092 records

Maryland counties with parcel data

24 counties, largest first. Each county links to its own page with the full coverage table, field families and download options.

Maryland counties with parcel data
CountyPopulation
Baltimore County24005852,425
Montgomery County240311,082,273
Baltimore city24510568,271
Anne Arundel County24003602,350
Prince George's County24033966,629
Charles County24017174,478
Harford County24025265,514
Queen Anne's County2403553,688
Garrett County2402328,393
Frederick County24021299,317
Howard County24027339,668
Carroll County24013177,108
Worcester County2404754,337
Washington County24043157,228
St. Mary's County24037116,469
Cecil County24015106,305
Wicomico County24045106,329
Calvert County2400994,913
Allegany County2400167,097
Dorchester County2401933,138
Talbot County2404138,244
Kent County2402919,557
Somerset County2403925,241
Caroline County2401134,248

How to read this table

Parcels is the count of county-level parcel records in the serving epoch, exactly as the coverage summary stores it. A parcel a county source files more than once is counted once per record, which is why state totals across the site add up to more than the 191.3M distinct parcels PropRaven publishes nationally. Address is the share of records with a non-empty situs address and Geocoded the share with a usable coordinate; both are rounded down to one decimal. Population is the Census county population where the gazetteer carries one, so you can judge record counts against the size of the county — a dash means no population row exists for that code.

Counties are matched to the Census county gazetteer by FIPS code. Rows the coverage summary holds under codes that are not counties are left out, so the table lists real counties and county-equivalents only — parishes in Louisiana, boroughs and census areas in Alaska, and independent cities in Virginia, Maryland, Missouri and Nevada each get their own page.

What a Maryland parcel record contains

Every parcel record shares one schema nationally: owner name and mailing address, situs address, assessed and market value, sales and deed history, building permits, hazard and risk flags, and parcel geometry where the county publishes it. Which of those families is populated varies by county — the coverage columns above tell you how much of each is filled for Maryland, and the county pages break the same figures down further. The data dictionary documents every table and column.

Get Maryland parcel data

  • Search Maryland parcelsFilter and browse parcels in the search tool — free tier, no card required.
  • REST API and SDKsLook parcels up by ID, address or APN from TypeScript, Python or Go; 1,000 lookups a month free.
  • MCP serverQuery the same records from Claude, ChatGPT, Cursor or any MCP-compatible agent.
  • Snowflake MarketplaceTake the full dataset as a share into your own Snowflake account — no ETL.
  • Bulk parcel dataBulk delivery for whole-state or national workloads.

Related