Will County is one of Illinois's fastest-growing counties, driven by logistics and warehousing expansion along the I-80/I-55 corridors, suburban residential development pushing south and southwest from Cook County, and affordable housing relative to the northern collar counties. Joliet is the county seat and largest city. Will County sits in the 12th Judicial Circuit and maintains online circuit court access through the Illinois court public portal.
Two key operational issues define Will County searches. First, Naperville extends from DuPage County into Will County's northeastern corner — Will County records for the southern Naperville portion route to the 12th Judicial Circuit rather than DuPage's 18th, and many researchers miss this entirely. Bolingbrook similarly straddles the boundary with the majority of its population in Will County. Second, Will County's growth is substantially driven by Cook County outmigration, meaning a large share of current Will County residents have prior Cook County records that require separate access. For broader Illinois context, see our Illinois state guide.
Key takeaways
- Will County has an estimated 700,000 residents (U.S. Census Bureau, 2023 ACS) — one of Illinois's fastest-growing counties; county seat and largest city is Joliet.
- Illinois court public portal covers Will County's 12th Judicial Circuit alongside all other Illinois counties in one statewide name search — the most efficient starting point.
- Naperville's southern portion and the majority of Bolingbrook are in Will County rather than DuPage County — Will County records for these addresses are in the 12th Judicial Circuit.
- Many Will County residents relocated from Cook County and have prior Cook County records that require separate access — ISP statewide name search and Cook County civil dockets are standard supplements.
Will County quick facts
- Population estimate (2023): approximately 700,000 (U.S. Census Bureau, 2023 ACS)
- County seat: Joliet
- Largest city: Joliet (est. pop. 150,000)
- State: Illinois
- Primary court: Will County Circuit Court (12th Judicial Circuit)
Population estimates from the U.S. Census Bureau.
How to search Will County records
Use the Illinois statewide portal first to cover Will County and neighboring counties simultaneously
Will County Circuit Court records are accessible through the Illinois court public portal, which covers all 102 Illinois counties in a single statewide name search. For Will County specifically, this means a single query surfaces 12th Judicial Circuit records alongside Cook County, DuPage County, and Kane County records simultaneously — the most efficient approach for Will County's high-outmigration-destination character, where many residents have prior Cook County or DuPage County records. The Will County Clerk of the Circuit Court at willcountyillinois.com also maintains a local case access portal for deeper document retrieval on Will County matters. Start with the statewide portal, then use the local portal for document-level access. Our court record search guide covers how Illinois's statewide portal compares to neighboring states' access systems.
Confirm county for Naperville and Bolingbrook addresses
Naperville extends from DuPage County's 18th Judicial Circuit southward into Will County's 12th Judicial Circuit. The southern and southeastern portions of Naperville — particularly addresses with ZIP codes 60564 and parts of 60565 — are in Will County. A DuPage County search for a southern Naperville address may return nothing, not because no record exists, but because the case was filed in Will County's circuit. Bolingbrook is the larger issue: the majority of Bolingbrook's population and land area is in Will County. Most Bolingbrook addresses route to Will County's 12th Judicial Circuit, not DuPage's 18th. For either city, checking the address against county boundary maps before routing any document request is essential. The Illinois statewide portal partially resolves this by covering both circuits simultaneously — but knowing which circuit holds the documents matters when contacting clerks. Our find someone by name and city guide covers how to use city context to route to the correct county system.
Supplement with Cook County supplements for subjects who relocated from Chicago
Will County's population growth is substantially fueled by Cook County outmigration — residents moving south and southwest from Chicago and the northern suburbs seeking lower housing costs and more space. Prior records for these subjects remain in Cook County's systems. Cook County civil court records are partially accessible online through the Clerk of Circuit Court portal; Cook County criminal case files require in-person access at the Daley Center. The Illinois State Police (ISP) statewide name search is the most efficient tool for comprehensive prior-Illinois criminal history across Cook, Will, and any other Illinois counties. Our criminal record search guide covers how Cook County's in-person criminal access requirement affects multi-county Illinois searches.
Official record sources in Will County
| Record type | Agency | Online access | Notes |
|---|---|---|---|
| All circuit court records (felony, civil, family, misdemeanor, traffic, probate) | Illinois court public portal (statewide) | Illinois court public access — see Will County circuit court website for current URL | Covers all 102 Illinois counties simultaneously. Start here — covers Will County's 12th Judicial Circuit alongside Cook, DuPage, and Kane in one query. |
| Will County circuit court records (local portal) | Will County Clerk of the Circuit Court | willcountyillinois.com | Local 12th Judicial Circuit case access. More complete for document retrieval and older Will County records. Use alongside the statewide portal. |
| Statewide criminal history | Illinois State Police (ISP) | isp.illinois.gov | ISP statewide name search covers all Illinois counties including Will and Cook. Most efficient supplement for prior-Cook-County criminal history without in-person courthouse access. |
| Property records | Will County Recorder | willcountyillinois.com/recorder | Free online search by owner name or address for deeds, mortgages, and liens. Most reliable current-address source for Will County homeowners. |
| Marriage and vital records | Will County Clerk / Illinois IDPH | willcountyillinois.com/county-clerk and idph.illinois.gov/vitalrecords | County Clerk issues and holds marriage licenses. Illinois IDPH statewide vital records index from 1916. Certified copies by mail. |
| Arrest and booking records | Will County Sheriff / Joliet Police Department | willcosheriff.org and jolietpolice.org | Sheriff covers county jail and unincorporated areas. JPD covers Joliet city arrests. Individual suburban municipal departments maintain separate records. |
For a broader overview of how public records are aggregated across jurisdictions, see our public record search guide.
Marriage records in Will County
Marriage licenses in Illinois are issued by the county clerk where the license is obtained. The Will County Clerk issues and holds marriage licenses, with records accessible at willcountyillinois.com/county-clerk. Illinois Department of Public Health maintains a statewide vital records index from 1916 forward — certified copies by mail through idph.illinois.gov/vitalrecords or VitalChek.
Will County generates a high marriage license volume given its rapid population growth. For a full guide to how marriage record searches work across all states, see our marriage record search guide.
Divorce records in Will County
Divorce cases in Illinois are filed in Circuit Court in the county of residence. Will County Circuit Court (12th Judicial Circuit) handles dissolution of marriage filings for Will County residents, with case indexes accessible through the Illinois court public portal and the Will County Clerk portal at willcountyillinois.com. Illinois requires 90 days of state residency before filing. Full documents require contact with the Will County Circuit Court Clerk in Joliet.
For subjects who relocated from Cook County, divorce cases filed while living in Cook County remain in Cook County circuit court records — they do not transfer to Will County when someone moves. For a full guide to how divorce record searches work across all states, see our divorce record search guide.
Industry insight
Will County is where the ISP statewide search is the most consistently valuable starting tool. The county's Cook County outmigration is so significant that a Will County-only search regularly misses years of Cook County record history for the subject. The ISP statewide search covers both counties simultaneously without requiring separate portal access for each — and since Cook County criminal case files require in-person access, ISP is often the only practical way to get comprehensive Illinois criminal context without a trip to the Daley Center.
The Bolingbrook situation is the other consistent issue. Most of Bolingbrook is in Will County — not DuPage. Researchers who search DuPage County for a Bolingbrook address and come up empty often assume there is no record, when in fact the case was filed in Will County's 12th Circuit. The Illinois statewide portal catches this automatically because it covers both circuits simultaneously. But if you are going to the local portal for document retrieval, you need to know which county — and for Bolingbrook, it is usually Will.
Common mistakes when searching in Will County
- Skipping the Cook County supplement for subjects who relocated from Chicago — Will County's population growth is substantially Cook County outmigration. Prior records in Cook County stay in Cook County's systems. ISP statewide search or direct Cook County Clerk access for civil records is the standard supplement for any Will County subject with prior Chicago address history.
- Searching DuPage County for Bolingbrook addresses — most of Bolingbrook is in Will County. A clean DuPage search for a Bolingbrook address likely means the case is in Will County's 12th Circuit, not that no record exists.
- Treating all Naperville addresses as DuPage County — the southern Naperville ZIP codes (60564, parts of 60565) are in Will County. A southern Naperville address that produces no DuPage result should be checked against Will County circuit records next.
- Relying on Joliet address records without accounting for address volatility from correctional facility proximity — Will County has two large state correctional facilities (Stateville and Joliet Correctional Center), which create residential address database entries for individuals housed there during incarceration periods. Verify Joliet address currency through the Recorder of Deeds before treating an older Joliet address as a current residential anchor.
Will County court system overview
Will County is served by the 12th Judicial Circuit, which covers only Will County — one of the few single-county circuits in Illinois. The circuit court handles felonies, major civil cases, family law, probate, misdemeanors, and traffic matters — Illinois has no separate county court tier. Municipal courts in Joliet, Naperville (Will County portion), Bolingbrook, and other municipalities handle local ordinance matters separately and are not in the circuit court portal.
Crime statistics and public-safety context
Will County's crime rates are moderate relative to the Illinois state average, with Joliet and some urban communities generating elevated rates and the growing suburban residential areas generating lower rates. Joliet's logistics and casino workforce creates a transient population component with above-average address turnover. Illinois State Police crime statistics for 2023 showed Will County's violent crime rate near the statewide average, with Joliet city driving the majority of the county's serious crime volume. Source: Illinois State Police, Crime in Illinois 2023.
Major cities in Will County
Joliet
Joliet (est. pop. 150,000 — U.S. Census Bureau, 2023 ACS) is the county seat and Will County's largest city, positioned at the intersection of I-80 and I-55. Joliet has a large logistics and warehousing workforce, a significant casino employment sector, and two large state correctional facilities — Stateville Correctional Center and the former Joliet Correctional Center. The correctional facility presence creates address database entries for incarcerated individuals that may appear as Joliet residential addresses.
Bolingbrook
Bolingbrook (est. pop. 76,000 — U.S. Census Bureau, 2023 ACS) straddles the Will-DuPage county line with the majority of the city in Will County. The 12th Judicial Circuit handles most Bolingbrook records. A Bolingbrook address search in DuPage that returns nothing should be followed by Will County records. Bolingbrook's warehouse and distribution workforce creates a more diverse demographic profile than most DuPage County cities.
Romeoville and Plainfield
Romeoville (est. pop. 40,000 — U.S. Census Bureau, 2023 ACS) and Plainfield (est. pop. 45,000) are growing Will County communities southwest of the DuPage border. Both are entirely in Will County with no boundary ambiguity. Both are primarily residential suburbs with stable address patterns and lower court filing rates than Joliet. Records for both route entirely to the 12th Judicial Circuit.
New Lenox and Lockport
New Lenox (est. pop. 32,000) and Lockport (est. pop. 26,000) are southern Will County communities with growing residential populations and stable homeowner bases. Both are entirely within Will County and route to the 12th Circuit. Address histories in these communities tend to be more stable than Joliet or Bolingbrook given higher homeownership rates.
Common search scenarios
Searching by name and city in Will County
Run the Illinois statewide court portal first. For Naperville and Bolingbrook, confirm county before routing clerk contact. For Joliet searches, verify address currency through the Recorder before treating older Joliet addresses as current. Check the aggregator for prior Cook County addresses before concluding. See our guide on finding someone by name and city.
Checking Will County court records
Illinois statewide portal for broad county view → Will County Clerk at willcountyillinois.com for local document access → ISP statewide name search for Cook County criminal context → Will County Recorder for property-based address verification. See our court record search guide.
Searching for a subject who relocated from Cook County
Identify the prior Cook County city from the aggregator address chain. ISP statewide name search covers Cook County criminal history without requiring in-person courthouse access. Cook County Clerk civil docket covers civil court matters and is partially accessible online. For Cook County criminal case documents, in-person access at the Daley Center remains required. A name and relative search through the aggregator typically surfaces the Cook County address chain and the approximate time period of prior residency before any portal work begins.
Start Here: Enter Any Name To View Records
Best sites to review first
Before running Will County court portals, these are the two services I recommend reviewing first — particularly for prior Cook County address history and the Naperville-Bolingbrook county identification.
| Service | Why people use it | Best fit |
|---|---|---|
| Instant Checkmate | Aggregates address history across Will, Cook, and DuPage counties — essential for identifying prior Cook County addresses and confirming which county covers Naperville and Bolingbrook addresses | Cook County outmigration history identification and Naperville-Bolingbrook county confirmation |
| TruthFinder | Address timeline and relative associations across the Chicago southwest suburban corridor | Expanded context for subjects with address histories spanning Will, Cook, and DuPage counties |
Important: These services are not FCRA-compliant consumer reporting agencies. Do not use them for employment screening, tenant decisions, insurance underwriting, or any other purpose regulated by the Fair Credit Reporting Act.
Frequently asked questions
Does Will County have an online court records search?
Yes, through two complementary systems. The Illinois court public portal covers Will County's 12th Judicial Circuit alongside all other Illinois counties in one statewide name search — the best starting point. The Will County Clerk of the Circuit Court at willcountyillinois.com provides a local case access portal for deeper document retrieval. Start with the statewide portal to catch multi-county history, then use the local portal when document-level access is needed for Will County-specific records.
Are most Bolingbrook records in Will County or DuPage County?
Most Bolingbrook records are in Will County. The majority of Bolingbrook's land area and population is in Will County's 12th Judicial Circuit. A smaller portion of Bolingbrook's northeastern edge is in DuPage County's 18th Circuit. For most Bolingbrook searches, starting with Will County is correct — if a Will County search produces nothing, then check DuPage County as the secondary step. The Illinois statewide portal covers both circuits simultaneously and is the most efficient starting approach for any Bolingbrook search.
Where do I find marriage and divorce records for Will County?
Marriage licenses are issued by the Will County Clerk at willcountyillinois.com/county-clerk. Illinois IDPH maintains a statewide vital records index from 1916 forward — certified copies by mail through idph.illinois.gov/vitalrecords. Divorce case indexes are accessible through the Illinois court public portal and the Will County Clerk portal. Full documents require contact with the Will County Circuit Court Clerk in Joliet. For subjects who divorced before moving to Will County, those records remain in the prior county's circuit court.
How do I access Cook County records for subjects who relocated to Will County?
ISP statewide name search at isp.illinois.gov is the most efficient tool for Cook County criminal history — it covers Cook County without requiring in-person courthouse access. Cook County Clerk of Circuit Court at cookcountyclerkofcourt.org provides online case index access for civil matters. Cook County criminal case documents still require in-person access at the Daley Center courthouse in Chicago. For a comprehensive Cook County civil picture, the Clerk of Circuit Court portal is the online access point.
How do I find property records for Will County?
The Will County Recorder at willcountyillinois.com/recorder provides free online searches by owner name or address for deeds, mortgages, and liens. The Supervisor of Assessments handles property valuation data. The Recorder is the most reliable current-address verification tool for Will County homeowners.
Does Illinois have a statewide criminal history search?
Yes. Illinois State Police at isp.illinois.gov provides a statewide criminal history name search covering all Illinois counties including Will County. This is the most efficient supplement when multi-county Illinois history is suspected, particularly for prior Cook County criminal history where in-person courthouse access would otherwise be required for case documents.
Can I use these searches for jobs, housing, or insurance decisions?
No. The services discussed on this page are not consumer reporting agencies and the information here is not a consumer report. They should not be used for employment, tenant screening, insurance underwriting, credit, or any other purpose regulated by the Fair Credit Reporting Act.
Other Illinois county guides
