Population
316K
County Seat
Woodstock
Libraries
13
Schools
85
SearchSystems Editorial
Edited by Sam Rokni — Editor & Owner, SearchSystems.net. Public records professional since 1999. NAPBS founding member. Full bio & credentials.
Last reviewed: June 04, 2026 · Methodology: all Mchenry County record-source URLs verified against the official local and Illinois state publishers on the review date. 4 primary .gov / official sources cited below.
Mchenry County — Key Numbers (2026)
Population, demographics, and county-seat data for Mchenry County, Illinois — verified against U.S. Census 2024 estimates.
315,959
Population
Census estimate
115,467
Households
Census estimate
$100,101
Median income
Annual household
$270,600
Median home value
Census ACS
Woodstock
County seat
In Illinois
Criminal records
1 source
Court records
2 sources
Wants & warrants
see state portal
Property records
4 sources
Vital records
see state portal
Voter records
see state portal
Professional licenses
see state portal
Recorded documents
see state portal
Count of verified official sources per record type. Multiple sources One source Use state portal
Mchenry County Records at a Glance
| Record type | Mchenry County verified sources |
|---|---|
| Court records | Case Search - Public Case Access State of Illinois Office of the Illinois Courts |
| Criminal records | Most Wanted |
| Wants & warrants | No verified source — see Mchenry County state portal below |
| Property records | McHenry County Property Tax Inquiry County Recorder | McHenry County, IL |
| Vital records | No verified source — see Mchenry County state portal below |
| Voter records | No verified source — see Mchenry County state portal below |
| Professional licenses | No verified source — see Mchenry County state portal below |
| Recorded documents | No verified source — see Mchenry County state portal below |
Count of officially verified .gov / .us record sources cataloged for Mchenry County. Data verified June 04, 2026.
What Changed in 2026 — Mchenry County Records
2026
Mchenry County official government portal active
The official Mchenry County government website at www.co.mchenry.il.us continues to serve as the canonical local source.
2026
Mchenry County court records portal verified
State court system links for Mchenry County verified against the Illinois judiciary portal in 2026.
2026
Mchenry County criminal records access
State criminal records repository for Mchenry County (statewide system, not county-specific) confirmed active in 2026.
2026
Mchenry County property records online
Mchenry County property assessment and recorder office online portal active in 2026.
The 4-Step Mchenry County Records Pathway
1
Step 1 — Start at the Mchenry County clerk/courthouse
For most local records (court cases, property deeds, marriage licenses), the Mchenry County clerk's office is the first stop.
2
Step 2 — Use the Illinois statewide systems
Criminal background, court case search, voter registration, and professional licensing are all run at the Illinois state level — not by the county.
3
Step 3 — Federal sources for federal records
Federal court cases (PACER), federal tax liens (IRS), military records (NPRC), and immigration data (ICE) are all federal — not held by the county.
4
Step 4 — Cross-check before relying on data
Most county portals lag 24-48 hours behind the courthouse. For time-sensitive verification, call the clerk directly.
Five Things People Get Wrong About Mchenry County Records
❌ Myth: "Mchenry County maintains all criminal records."
✓ Truth: False. Criminal records for Mchenry County are held by the Illinois state repository, NOT the county. The county sheriff has only the local arrest log.
❌ Myth: "Records sealed in Mchenry County are gone everywhere."
✓ Truth: False. Sealing removes records from public search but they still exist at the courthouse and may appear in FBI records (Identity History Summary).
❌ Myth: "Free 'instant background' sites have Mchenry County data."
✓ Truth: False. Only the official Illinois state repository has verified, current Mchenry County data. Free sites often have stale data.
❌ Myth: "The Mchenry County assessor's value is what I'll sell my home for."
✓ Truth: False. The Mchenry County assessor's value is for property tax purposes only — usually below market value.
❌ Myth: "All county records older than 50 years are public."
✓ Truth: Partially false. Public-records rules vary by record type AND state. Court records and deeds are usually older-public; vital records remain restricted longer (often 75-125 years).
Primary Sources (All Verified)
- www.co.mchenry.il.us — Official Mchenry County government website
- caseinfo.mchenrycountyil.gov — Court records — official source
- www.mchenrycountyil.gov — Property records — official source
- fbi.gov — FBI Identity History Summary (federal record)
Related — Mchenry County & Illinois Records
For records not specific to Mchenry County, use Illinois's statewide system or the national hub.
📍 Illinois statewide record systems:
- Illinois Court Records →
- Illinois Criminal Records →
- Illinois Property Records →
- Illinois Vital Records →
- Illinois Voter Records →
- Illinois Wants & Warrants →
- Illinois Licenses →
- Illinois Recorded Documents →
🇺🇸 National hubs:
Related Public Records
Illinois statewide records: Court records · Criminal records · Wants & warrants · Property records · Vital records · Voter records · Licenses · Recorded docs
National directories: Court records · Criminal records · Property records · Vital records · Federal databases
About Mchenry County, Illinois
Mchenry County is located in northeast Illinois. The county seat is Woodstock (official site: https://www.co.mchenry.il.us/home).
- Households: 115,467
- Median household income: $100,101
- Median home value: $270,600
- Below poverty line: 6.0%
- Land area: 603.4 sq mi
- Population density: 523.6 people / sq mi
Census - McHenry County Illinois Genealogical Society
Official Free
Volunteers of the McHenry County Illinois Genealogical Society have indexed many of the United States Federal Census records for McHenry County, providing an excellent alternative to the commercial indexes available elsewhere on the Internet. Indexes are available for the following years: 1870 Federal Census (Available for purchase) 1880 Federal Census (Free!)
AVA
Official Free
McHenry County land records database, including affidavits, agreements, easements, mortgages, deeds, liens, plats, and more.
Exemptions - McHenry Township
Official Free
An $8,000 reduction in the assessed value of property . To qualify for this exemption a person must be 65 years of age or older during the taxable year for which application is made and must be the owner of record or person with equitable interest in the property.
McHenry County Property Tax Inquiry
Official Free
That will take you to the payment information screens where you can register for reminder notifications, complete your payment and print a receipt. Please note eCHECKS are FREE, Debit/Credit Cards and Digital Wallet payments have a 2.4% fee. McHenry County Treasurer's Office receives no portion ...
County Recorder | McHenry County, IL
Official Free
The mission of the McHenry County Recorder's Office is to record, maintain and to retrieve all real estate records, documents and plats of subdivision in McHenry County, while providing an efficient office giving the public courteous, fast and correct information on any of the over 3.9 million ...
Forms and Rules | McHenry County, IL
Official Free
Model Home Assessment Application (PTAX-762) Affordable Rental Housing Tax Credit for Multi-Unit Buildings- Application and Instructions · Change of Address Instruction · Change of Address - fillable PDF · Tax Parcel Combination or Division · Tax Parcel Combination or Division - fillable ...
McHenry County Property Search – Sources of Information 1 | P a g e
Official Free
Description: This dataset contains the location of all the schools in McHenry County . Information · contained within the school location was obtained from the Regional Office of Education web site and Purpose: This dataset is intended to be used as a reference for cartographic map production.
Case Search - Public Case Access
Official Free
Capitalization doesn't matter, case record · Search on a person's name using the format: [Last], [First] [Middle] Matches are names that start with the entered value · ex: "SMITH, J" returns SMITH, JOHN A and SMITH, JAY D · If you are getting too many results to page through, please make your search more specific McHenry County Circuit Clerk 2200 N. Seminary Ave Woodstock, IL 60098 Rooms 136 & 353 · Visiting the Courthouse Civil Information Criminal & Traffic
State of Illinois Office of the Illinois Courts
Official Free
The Office of the Illinois Courts provides information about the Illinois court system, including Circuit Courts, Appellate Courts, and the Supreme Court.
Most Wanted
Official Free
Official websites use .gov A .gov Share sensitive information only on official, secure websites. Multi-court Voice Case Information System: 866-222-8029 ext.
VINE is not working right now - VINELink
Official Free
ALL PERSONAL INFORMATION SUBMITTED BY USERS OF THIS SITE WILL BE KEPT CONFIDENTIAL AND WILL BE USED ONLY FOR VINE SERVICES, INCLUDING NOTIFICATION PURPOSES. The VINE service representatives may contact you from time to time to ask about your experience with the VINELink site and our VINE services.
Birth, Death, Other Records - Illinois Department of Public Health
Official Free
Certified copies are available from the circuit court clerk in the county where the dissolution of civil union was granted. To learn more, see RESOURCES in the right-hand column and click on List of Circuit Court Clerks. The Division of Vital Records can · Archivos De Nacimientos, Defunciones, Y Otros Eventos Visit the Spanish language version of the IDPH Vital Records website.
Illinois Online Voter Registration Application: Registration Lookup
Official Free
Home | State Board of Elections Vote In Illinois? Select a Language： 中文 English हिंदी Español · Home | SBE Home | App. Status | Contact Polling Place Locator Am I Registered to Vote? Select a language: 中文 English हिंदी Español · The registration period for the online voter registration
IDFPR Online Services Portal
Official Free
Welcome to the IDFPR Online Services Portal ! Please allow 2-4 business days for your application to post in our systems and your license status to update. If you attempted to make an online payment on April 2, 2026, please do not try to submit another payment.
www.elections.il.gov - /precinctmaps/McHenry/
Official Free
[To Parent Directory] 2/20/2020 2:51 PM 6496256 1 Precincts.pdf 8/26/2020 9:05 AM 234329 Alden Precinct 1.pdf 8/26/2020 9:06 AM 13530505 Algonquin precincts.pdf 8/26/2020 9:07 AM 678668 Burton precincts.pdf 8/26/2020 9:08 AM 692134 Chemung precincts.pdf 8/26/2020 9:09 AM 668478 Coral precincts.pdf 8/26/2020 9:09 AM 2684683 Dorr precincts.pdf 8/26/2020 9:10 AM 305116 Dunham precinct.pdf 8/26/2020 9:11 AM 5154856 Grafton precincts.pdf 8/26/2020 9:12 AM 1288485 Greenwood precincts.pdf 8/26/2020 9:13 AM 450896 Hartland precincts.pdf 8/26/2020 9:13 AM 408565 Hebron precincts.pdf 8/26/2020 9:14 AM 6
McHenry County
Official Free
Field notes are the narrative record of the cadastral survey . They are written in tabular format and contain the detailed descriptions of entire survey process including the instrumentation and procedures utilized, calling all physical evidence evaluated in the survey process, and listing all ...
Frequently Asked Questions
How do I look up court cases in Mchenry County?
Mchenry County court cases are filed with the Circuit Clerk. Search the Case Search - Public Case Access portal: https://caseinfo.mchenrycountyil.gov/PublicCaseAccess/CaseSearch. For federal matters, see PACER.
Can my employer see a sealed record in Illinois?
Generally, most private employers running a standard name-based check cannot see a sealed Illinois record. However, government employers, law enforcement, schools, healthcare facilities, and any role requiring a fingerprint-based check can see sealed records under specific statutory exemptions. Confirm specifics with the sealing court.
Are Illinois marriage records public?
Marriage records in Illinois are generally public — anyone can verify that a marriage occurred and request a non-certified copy. Certified copies (needed for legal purposes like name changes or immigration) may be restricted to the spouses, immediate family, or those with a court order.
What's the difference between a court record and a criminal record in Illinois?
A court record shows everything filed in a specific case — pleadings, motions, judgments. A criminal record (rap sheet) is a person-centric history from the Illinois State Police that aggregates arrests and dispositions across all courts in Illinois. Court records are searched by case; criminal records by person.