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Cook County

county in Illinois, United States
AdministrativeArea county_of_illinois Q108418
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Summary

Cook County is a county of Illinois[1]. It ranks in the top 0.98% of county of illinois entities by monthly Wikipedia readership (6,389 views/month, #1 of 102).[2]

Key Facts

  • Member of: GovAI Coalition[3]
  • Located in the administrative territorial entity: Illinois[4]
  • Country: United States[5]
  • Capital: Chicago[6]
  • Shares border with: McHenry County[7], Lake County[8], Will County[9], DuPage County[10], Kane County[11], Porter County[12], Berrien County[13]
  • Named after: Daniel Pope Cook[14]
  • Contains the administrative territorial entity: Barrington[15], Oak Lawn[16], Bridgeview[17], Chicago[18], Maywood[19], Glenview[20]
  • Flag: flag of Cook County[21]
  • Commons category: Cook County, Illinois[22]
  • Inception: January 15, 1831[23]
  • Authority: Cook County Government[24]
  • Official website: http://www.cookcountygov.com[25], https://www.cookcountyil.gov/[26]
  • Topic's main category: Category:Cook County, Illinois[27]
  • Population: 5,194,675[28], 5,198,853[29], 5,212,589[30], 5,227,992[31], 5,240,700[32], 5,238,216[33], 5,275,541[34], 5,194,625[35]
  • Topic has template: Template:Cook County, Illinois[36]
  • Official name: Cook County[37]
  • Legal form: Limited Partnership[38]
  • List of monuments: National Register of Historic Places listings in Cook County, Illinois, outside Chicago and Evanston[39]
  • Category for people born here: Category:Births in Cook County, Illinois[40]
  • Category for people who died here: Category:Deaths in Cook County, Illinois[41]
  • Number of households: 2,264,966[42], 2,180,359[43], 1,991,474[44]
  • Native label: Cook County[45]
  • NCI Thesaurus ID: C108298[46]
  • Category of associated people: Category:People from Cook County, Illinois[47]
  • Different from: Cook County[48], Cooke County[49]

Body

Physical Characteristics

Cook County covers an area of 4233.697805 km²[50]. It sits at an elevation of 950 m[51].

Why It Matters

Cook County has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[52] It is known by 38 alternative names across languages and contexts.[53]

Related Entities

Dominican University Illinois Nick Fuentes Northwestern University United States

References

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

Direct Wikidata claims

  1. [5] ↑ . wikidata.org.
  2. [6] ↑ . cookcountyil.gov. Retrieved . cookcountyil.gov. Provenance: wikidata.org.
  3. [7] ↑ . wikidata.org.
  4. [8] ↑ . data.census.gov. Retrieved . data.census.gov. Provenance: wikidata.org.
  5. [9] ↑ . data.census.gov. Retrieved . data.census.gov. Provenance: wikidata.org.
  6. [10] ↑ . data.census.gov. Retrieved . data.census.gov. Provenance: wikidata.org.
  7. [11] ↑ . data.census.gov. Retrieved . data.census.gov. Provenance: wikidata.org.
  8. [12] ↑ . data.census.gov. Retrieved . data.census.gov. Provenance: wikidata.org.
  9. [13] ↑ . data.census.gov. Retrieved . data.census.gov. Provenance: wikidata.org.
  10. [4] ↑ . wikidata.org.
  11. [14] ↑ . wikidata.org.
  12. [15] ↑ . wikidata.org.
  13. [16] ↑ . wikidata.org.
  14. [17] ↑ . wikidata.org.
  15. [18] ↑ . wikidata.org.
  16. [19] ↑ . wikidata.org.
  17. [20] ↑ . wikidata.org.
  18. [21] ↑ . wikidata.org.
  19. [22] ↑ . wikidata.org.
  20. [3] ↑ . sanjoseca.gov. Retrieved . sanjoseca.gov. Provenance: wikidata.org.
  21. [23] ↑ . cookcountyil.gov. Retrieved . cookcountyil.gov. Provenance: wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . Open ISNI for Organizations. Retrieved . isni.ringgold.com. Provenance: wikidata.org.
  25. [27] ↑ . wikidata.org.
  26. [28] ↑ . 2010 United States Census. Retrieved . census.gov. Provenance: wikidata.org.
  27. [29] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  28. [30] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  29. [31] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  30. [32] ↑ . census.gov. census.gov. Provenance: wikidata.org.
  31. [33] ↑ . Population Estimates Program. census.gov. Provenance: wikidata.org.
  32. [34] ↑ . 2020 United States Census. Retrieved . public.tableau.com. Provenance: wikidata.org.
  33. [35] ↑ . census.gov. Retrieved . census.gov. Provenance: wikidata.org.
  34. [36] ↑ . wikidata.org.
  35. [37] ↑ . wikidata.org.
  36. [38] ↑ . Global LEI Index. Retrieved . wikidata.org.
  37. [39] ↑ . wikidata.org.
  38. [40] ↑ . wikidata.org.
  39. [41] ↑ . wikidata.org.
  40. [42] ↑ . public.tableau.com. Retrieved . public.tableau.com. Provenance: wikidata.org.
  41. [43] ↑ . public.tableau.com. Retrieved . public.tableau.com. Provenance: wikidata.org.
  42. [44] ↑ . 2016–2020 American Community Survey. Retrieved . data.census.gov. Provenance: wikidata.org.
  43. [45] ↑ . wikidata.org.
  44. [46] ↑ . wikidata.org.
  45. [47] ↑ . wikidata.org.
  46. [48] ↑ . wikidata.org.
  47. [49] ↑ . wikidata.org.
  48. [51] ↑ . wikidata.org.
  49. [50] ↑ . www2.census.gov. Retrieved . www2.census.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [52] ↑ . Wikidata sitelinks. wikidata.org.
  3. [53] ↑ . 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). Cook County. Retrieved October 11, 2026, from https://4ort.xyz/entity/cook-county
MLA “Cook County.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Oct. 2026, https://4ort.xyz/entity/cook-county.
BibTeX @misc{4ortxyz_cook-county_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Cook County}}, year = {2026}, url = {https://4ort.xyz/entity/cook-county}, note = {Accessed: 2026-10-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Cook County — https://4ort.xyz/entity/cook-county (retrieved 2026-10-11)

Canonical URL: https://4ort.xyz/entity/cook-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. 9d ago · Schekinov Alexey Victorovich · 2026-10-02 view diff on Wikidata ↗
    Wikipedia languages → ['ang', 'ar', 'azb', 'bar', 'be', 'bg', 'bpy', 'ca', 'ce', 'ceb', 'cs', 'cy', 'd
    Claims rich → —
    "/* wbsetclaim-update:2||1|1 */ Instance of: county of Illinois"
  2. 5w ago · Theklan · 2026-09-04 view diff on Wikidata ↗
    P14687 → Data:US presidential elections by county/Cook County, Illino
    "/* wbsetclaim-create:2||1 */ P14687: Data:US presidential elections by county/Cook County, Illinois.tab, Link US presidential election dataset (P14687, subject: United States presidential"
  3. 7w ago · Carlwinslow11 · 2026-08-22 view diff on Wikidata ↗
    Taxonomicon id → —
    Area → {'unit': 'Q712226', 'amount': '+4233.697805'}
    Population → {'amount': '+5194675'}, {'amount': '+5198853'}, {'amount': '+5212589'} +5
    Top-level internet domain → —
    "/* wbeditentity-statements-multiple-properties-update:0||8 */ Correct two misapplied identifiers; update census-backed population and area data; improve core sourcing"
  4. 8w ago · RVA2869 · 2026-08-12 view diff on Wikidata ↗
    Located in time zone → —
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/46950|batch #46950]]: redundant value, already present at higher administrative level"
  5. 11w ago · Mxn · 2026-07-25 view diff on Wikidata ↗
    Top-level internet domain → —
    Domain name → cook.il.us
    "/* wbsetclaim-create:2||1 */ Domain name: Q140696559"
  6. 12w ago · Susmuffin · 2026-07-17 view diff on Wikidata ↗
    Harper's tag → cook-county
    "/* wbsetclaim-create:1||1 */ Harper's tag: cook-county, Matched to [[:toollabs:mix-n-match/#/entry/289917268|cook county (#289917268)]] in [[:toollabs:mix-n-match/#/catalog/7915|Harper's tag]] "
  7. 20w ago · Mxn · 2026-05-24 view diff on Wikidata ↗
    Member of → GovAI Coalition
    "/* wbcreateclaim-create:1| */ Member of: GovAI Coalition, [[:toollabs:quickstatements/#/batch/258464|batch #258464]]"
  8. 21w ago · Mahir256 · 2026-05-13 view diff on Wikidata ↗
    Category for people born here → Category:Births in Cook County, Illinois
    Elevation above sea level → {'unit': 'Q11573', 'amount': '+950'}
    Topic's main category → Category:Cook County, Illinois
    Water as percent of area → {'unit': 'Q11229', 'amount': '+42.2'}
    + 38 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.