Will County, Illinois

Will County, Illinois, has 712,253 residents (July 2025 estimate). Its county seat is Joliet. It uses Central Time and covers 836 sq mi (2,165 km²) of land.

ChicagoAurora
Will County in Illinois
Grundy CountyKendall CountyLake CountyJolietBolingbrookOrland Park
Will County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
712,253
Land area
836 sq mi (2,165 km²)
County seat or government
Joliet
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$109,984 ± $1,819
Median home value
$319,600 ± $3,152
Median rent, with utilities
$1,462 ± $33
Homes lived in by their owners
82.8% ± 0.6 points
County type
County
Metro or micro area
Chicago-Naperville-Elgin, IL-IN metro areaCentral county
Water area
13.3 sq mi (34.5 km²)
State
Illinois
County code (FIPS)
17197
Coordinates (central point)
41.448474, -87.978456

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Will County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 6044051,940 people
  2. 6043548,167 people
  3. 6058647,834 people
  4. 6056447,016 people
  5. 6054343,047 people
  6. 6044641,672 people
  7. 6056540,483 people
  8. 6045137,361 people
  9. 6044136,844 people
  10. 6047735,976 people
  11. 6051733,156 people
  12. 6042332,836 people
All 45
  1. 6054427,306 people
  2. 6043127,138 people
  3. 6048726,043 people
  4. 6058525,960 people
  5. 6044824,405 people
  6. 6046724,398 people
  7. 6043924,192 people
  8. 6049122,757 people
  9. 6049022,156 people
  10. 6046621,461 people
  11. 6043220,465 people
  12. 6040420,385 people
  13. 6043619,423 people
  14. 6040318,371 people
  15. 6050316,789 people
  16. 6043316,382 people
  17. 6044716,102 people
  18. 6041714,901 people
  19. 6041014,239 people
  20. 6044213,753 people
  21. 6047112,848 people
  22. 6095011,964 people
  23. 6048111,195 people
  24. 6047510,035 people
  25. 604169,550 people
  26. 604499,477 people
  27. 604017,647 people
  28. 604846,762 people
  29. 604685,809 people
  30. 604085,327 people
  31. 604213,649 people
  32. 609403,322 people
  33. 604071,812 people

45 ZIP Code areas overlap Will County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Will County, largest first

  1. Wheatland Township90,134 people
  2. Du Page Township87,582 people
  3. Joliet Township85,288 people
  4. Plainfield Township83,145 people
  5. Frankfort Township60,045 people
  6. Lockport Township59,827 people
  7. Troy Township49,728 people
  8. New Lenox Township44,199 people
  9. Homer Township40,989 people
  10. Crete Township23,542 people
  11. Monee Township15,425 people
  12. Manhattan Township12,424 people
All 24
  1. Channahon Township10,769 people
  2. Reed Township6,903 people
  3. Washington Township6,459 people
  4. Wilmington Township5,915 people
  5. Peotone Township4,395 people
  6. Jackson Township3,875 people
  7. Green Garden Township3,862 people
  8. Wesley Township1,819 people
  9. Will Township1,691 people
  10. Custer Township1,503 people
  11. Wilton Township1,055 people
  12. Florence Township888 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county

School districts in Will County, largest first

  1. Indian Prairie Community Unit School District 204136,452 people
  2. Plainfield School District 202128,402 people
  3. Joliet Township High School District 204128,263 people
  4. Lincoln Way Community High School District 210114,706 people
  5. Naperville Community Unit District 20396,944 people
  6. Valley View Community Unit School District 365U91,709 people
  7. Oswego Community Unit School District 30884,549 people
  8. Joliet Public School District 8680,617 people
  9. Lockport Township High School District 20578,651 people
  10. Bloom Township High School District 20658,480 people
  11. Minooka Community High School District 11144,775 people
  12. New Lenox School District 12243,328 people
All 38
  1. Troy Community Consolidated School District 30C37,953 people
  2. Crete-Monee Community Unit School District 201-U32,929 people
  3. Homer Community Consolidated School District 33C32,020 people
  4. Minooka Community Consolidated School District 20131,134 people
  5. Summit Hill School District 16124,411 people
  6. Frankfort Community Consolidated School District 157C19,938 people
  7. Mokena School District 15916,253 people
  8. Steger School District 19413,899 people
  9. Will County School District 9213,720 people
  10. Manhattan School District 11412,523 people
  11. Manteno Community Unit School District 512,223 people
  12. Richland School District 88A11,996 people
  13. Peotone Community Unit School District 207U10,998 people
  14. Coal City Community Unit School District 110,930 people
  15. Channahon School District 1710,595 people
  16. Reed Custer Community Unit School District 255U9,609 people
  17. Wilmington Community Unit School District 209U8,687 people
  18. Chaney-Monge School District 887,072 people
  19. Beecher Community Unit School District 200U6,644 people
  20. Lockport School District 916,535 people
  21. Fairmont School District 893,903 people
  22. Elwood Community Consolidated School District 2033,526 people
  23. Taft School District 903,282 people
  24. Rockdale School District 842,954 people
  25. Laraway Community Consolidated School District 70C2,615 people
  26. Union School District 812,020 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Aurora, Illinois (city)179,898 people
  2. Naperville, Illinois (city)150,692 people
  3. Joliet, Illinois (city)150,445 people
  4. Bolingbrook, Illinois (village)74,096 people
  5. Orland Park, Illinois (village)57,916 people
  6. Tinley Park, Illinois (village)54,842 people
  7. Plainfield, Illinois (village)46,708 people
  8. Romeoville, Illinois (village)41,152 people
  9. Oswego, Illinois (village)36,375 people
  10. Woodridge, Illinois (village)33,941 people
  11. New Lenox, Illinois (village)28,006 people
  12. Lockport, Illinois (city)26,409 people
All 59
  1. Homer Glen, Illinois (village)24,529 people
  2. Park Forest, Illinois (village)21,156 people
  3. Frankfort, Illinois (village)20,651 people
  4. Crest Hill, Illinois (city)20,628 people
  5. Mokena, Illinois (village)20,021 people
  6. Shorewood, Illinois (village)18,343 people
  7. Lemont, Illinois (village)17,820 people
  8. Channahon, Illinois (village)13,927 people
  9. Minooka, Illinois (village)12,891 people
  10. Manhattan, Illinois (village)11,026 people
  11. Frankfort Square, Illinois (CDP)9,560 people
  12. Steger, Illinois (village)9,418 people
  13. Crete, Illinois (village)8,386 people
  14. University Park, Illinois (village)7,306 people
  15. Braidwood, Illinois (city)6,062 people
  16. Wilmington, Illinois (city)5,494 people
  17. Coal City, Illinois (village)5,317 people
  18. Monee, Illinois (village)5,108 people

See all 59 cities, towns and communities in Will County, largest first

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Kankakee County, Illinois22 mi south
  2. Grundy County, Illinois24 mi southwest
  3. Kendall County, Illinois25 mi northwest
  4. DuPage County, Illinois28 mi north
  5. Lake County, Indiana31 mi east
  6. Cook County, Illinois35 mi northeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.