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St. Louis County

county in Missouri, United States
AdministrativeArea county_of_missouri Q498034
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St. Louis County

Summary

St. Louis County is a county of Missouri[1]. It ranks in the top 0.88% of county_of_missouri entities by monthly Wikipedia readership (569 views/month, #1 of 114).[2]

Key Facts

  • St. Louis County is located in Missouri[3].
  • St. Louis County is in the country of United States[4].
  • St. Louis County's instance of is recorded as county of Missouri[5].
  • St. Louis County's capital is recorded as Clayton[6].
  • St. Louis County's shares border with is recorded as St. Charles County[7].
  • St. Louis County's shares border with is recorded as St. Louis[8].
  • St. Louis County's shares border with is recorded as Jefferson County[9].
  • St. Louis County's shares border with is recorded as Madison County[10].
  • St. Louis County's shares border with is recorded as Franklin County[11].
  • St. Louis County's shares border with is recorded as St. Clair County[12].
  • St. Louis County's shares border with is recorded as Monroe County[13].
  • Louis IX of France is named after St. Louis County[14].
  • St. Louis County's contains the administrative territorial entity is recorded as Clayton[15].
  • St. Louis County's headquarters location is recorded as Clayton[16].
  • St. Louis County's twinned administrative body is recorded as Samara[17].
  • St. Louis County's Commons category is recorded as St. Louis County, Missouri[18].
  • October 1, 1812 marks the founding of St. Louis County[19].
  • St. Louis County's coordinate location is recorded as {'lat': 38.64, 'lon': -90.44}[20].
  • St. Louis County's official website is recorded as http://www.stlouisco.com[21].
  • St. Louis County's official website is recorded as https://stlouiscountymo.gov/[22].
  • St. Louis County's topic's main category is recorded as Category:St. Louis County, Missouri[23].
  • St. Louis County has a population of {'amount': '+998954'}[24].
  • St. Louis County has a population of {'amount': '+998920'}[25].
  • St. Louis County has a population of {'amount': '+999171'}[26].
  • St. Louis County has a population of {'amount': '+1000473'}[27].

Body

Geography

St. Louis County is in the country of United States[4]. It is located in Missouri[3].

Physical Characteristics

St. Louis County covers an area of {'unit': 'Q712226', 'amount': '+1356'}[28]. Population counts include {'amount': '+998954'}[24], {'amount': '+998920'}[25], {'amount': '+999171'}[26], {'amount': '+1000473'}[27], {'amount': '+1001444'}[29], and {'amount': '+1003362'}[30].

Designation and Status

St. Louis County's instance of is recorded as county of Missouri[5].

History and Context

October 1, 1812 marks the founding of St. Louis County[19]. Louis IX of France is named after it[14].

Why It Matters

St. Louis County ranks in the top 0.88% of county_of_missouri entities by monthly Wikipedia readership (569 views/month, #1 of 114).[2] It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[31] It is known by 34 alternative names across languages and contexts.[32]

Related Entities

Fontbonne University Louis IX of France Missouri United States University of Missouri–St. Louis Washington University in St. Louis

References

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

Direct Wikidata claims

  1. [4] ↑ . Global LEI Index. Retrieved . stlouiscountymo.gov. Provenance: wikidata.org.
  2. [5] ↑ . stlouiscountymo.gov. stlouiscountymo.gov. Provenance: wikidata.org.
  3. [6] ↑ . stlouiscountymo.gov. stlouiscountymo.gov. Provenance: wikidata.org.
  4. [7] ↑ . wikidata.org.
  5. [8] ↑ . wikidata.org.
  6. [9] ↑ . wikidata.org.
  7. [10] ↑ . wikidata.org.
  8. [11] ↑ . wikidata.org.
  9. [12] ↑ . wikidata.org.
  10. [13] ↑ . wikidata.org.
  11. [3] ↑ . stlouiscountymo.gov. stlouiscountymo.gov. Provenance: wikidata.org.
  12. [14] ↑ . stlouiscountymo.gov. stlouiscountymo.gov. Provenance: wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . Global LEI Index. Retrieved . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . stlouiscountymo.gov. stlouiscountymo.gov. Provenance: wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . 2010 United States Census. Retrieved . census.gov. Provenance: wikidata.org.
  23. [25] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  24. [26] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  25. [27] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  26. [29] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  27. [30] ↑ . Population Estimates Program. census.gov. Provenance: wikidata.org.
  28. [28] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [31] ↑ . Wikidata sitelinks. wikidata.org.
  3. [32] ↑ . 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. Louis County. Retrieved May 3, 2026, from https://4ort.xyz/entity/st-louis-county
MLA “St. Louis County.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/st-louis-county.
BibTeX @misc{4ortxyz_st-louis-county_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{St. Louis County}}, year = {2026}, url = {https://4ort.xyz/entity/st-louis-county}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): St. Louis County — https://4ort.xyz/entity/st-louis-county (retrieved 2026-05-03)

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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. 18d ago · Mahir256 · 2026-05-13 view diff on Wikidata ↗
    Located in → —
    Capital → Clayton
    Country → United States
    List of monuments → National Register of Historic Places listings in St. Louis County, Missouri
    + 37 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.