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St. Mary's County

county in Maryland, United States
AdministrativeArea county_of_maryland Q511120
St. Mary's County
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Summary

St. Mary's County is a county of Maryland[1]. It draws 1,240 Wikipedia views per month (county of maryland category, ranking #8 of 23).[2]

Key Facts

  • Located in the administrative territorial entity: Maryland[3]
  • Country: United States[4]
  • Located in or next to body of water: Wicomico River[5], Chesapeake Bay[6], Patuxent River[7], Potomac River[8]
  • Capital: Leonardtown[9]
  • Shares border with: Charles County[10], Calvert County[11], Dorchester County[12], Somerset County[13], Westmoreland County[14], Northumberland County[15]
  • Named after: Mary[16]
  • Contains the administrative territorial entity: Leonardtown[17]
  • Commons category: St. Mary's County, Maryland[18]
  • Inception: 1637[19]
  • Coordinate location: 38.252222222222, -76.563611111111[20]
  • Official website: http://www.co.saint-marys.md.us[21], https://www.stmarysmd.com/[22], https://www.stmaryscountymd.gov/[23]
  • Topic's main category: Category:St. Mary's County, Maryland[24]
  • Population: 105,151[25], 105,741[26], 107,756[27], 108,993[28], 109,633[29], 111,413[30], 113,777[31], 114,468[32]
  • Topic has template: Template:St. Mary's County, Maryland[33]
  • List of monuments: National Register of Historic Places listings in St. Mary's County, Maryland[34]
  • Category for people born here: Category:Births in St. Mary's County, Maryland[35]
  • Category for people who died here: Category:Deaths in St. Mary's County, Maryland[36]
  • Number of households: 41,280[37]
  • Native label: St. Mary's County[38]
  • NCI Thesaurus ID: C108898[39]
  • Category of associated people: Category:People from St. Mary's County, Maryland[40]
  • Different from: St. Mary Parish[41]
  • Area: 1582[42]
  • Water as percent of area: 53[43]
  • School district: St. Mary's County Public Schools[44]

Why It Matters

St. Mary's County has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[45] It is known by 53 alternative names across languages and contexts.[46]

Related Entities

Mary Maryland Naval Air Station Patuxent River United States

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [9] ↑ . wikidata.org.
  3. [10] ↑ . wikidata.org.
  4. [11] ↑ . wikidata.org.
  5. [12] ↑ . wikidata.org.
  6. [13] ↑ . wikidata.org.
  7. [14] ↑ . wikidata.org.
  8. [15] ↑ . wikidata.org.
  9. [3] ↑ . wikidata.org.
  10. [16] ↑ . wikidata.org.
  11. [17] ↑ . wikidata.org.
  12. [5] ↑ . wikidata.org.
  13. [6] ↑ . wikidata.org.
  14. [7] ↑ . wikidata.org.
  15. [8] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.
  26. [28] ↑ . wikidata.org.
  27. [29] ↑ . wikidata.org.
  28. [30] ↑ . wikidata.org.
  29. [31] ↑ . wikidata.org.
  30. [32] ↑ . wikidata.org.
  31. [33] ↑ . wikidata.org.
  32. [34] ↑ . wikidata.org.
  33. [35] ↑ . wikidata.org.
  34. [36] ↑ . wikidata.org.
  35. [37] ↑ . wikidata.org.
  36. [38] ↑ . wikidata.org.
  37. [39] ↑ . wikidata.org.
  38. [40] ↑ . wikidata.org.
  39. [41] ↑ . wikidata.org.
  40. [42] ↑ . wikidata.org.
  41. [43] ↑ . wikidata.org.
  42. [44] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [45] ↑ . Wikidata sitelinks. wikidata.org.
  3. [46] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). St. Mary's County. Retrieved October 18, 2026, from https://4ort.xyz/entity/st-mary-s-county
MLA “St. Mary's County.” 4ort.xyz Knowledge Graph, 4ort.xyz, 18 Oct. 2026, https://4ort.xyz/entity/st-mary-s-county.
BibTeX @misc{4ortxyz_st-mary-s-county_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{St. Mary's County}}, year = {2026}, url = {https://4ort.xyz/entity/st-mary-s-county}, note = {Accessed: 2026-10-18}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): St. Mary's County — https://4ort.xyz/entity/st-mary-s-county (retrieved 2026-10-18)

Canonical URL: https://4ort.xyz/entity/st-mary-s-county · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · Theklan · 2026-09-04 view diff on Wikidata ↗
    Located in time zone → —
    P14687 → Data:US presidential elections by county/St. Mary's County,
    "/* wbsetclaim-create:2||1 */ P14687: Data:US presidential elections by county/St. Mary's County, Maryland.tab, Link US presidential election dataset (P14687, subject: United States presid"
  2. 22w ago · Mahir256 · 2026-05-13 view diff on Wikidata ↗
    Contains the administrative territorial entity → Leonardtown
    Instance of → —
    Located in the administrative territorial entity → Maryland
    Number of households → {'amount': '+41280'}
    + 35 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/31546|batch #31546]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.