#1 Landlord Community
⚖️ Eviction Laws
🔄 Compare Evictions
📚 State Laws
🔎 Search Laws
🏛️ Courthouse Finder
⏱ Timeline Tool
📖 Glossary
📊 Scorecard
💰 Security Deposits
🏠 Back to Legal Resources Hub
🏠 Law-Buddy
🏠 Compare State Laws
🏠 Quick Eviction Data
🔎 Notice Calculator
🔎 Cost Estimator
🔎 Timeline Calculator
🔎 Eviction Readiness
💰 Full Landlord Tenant Laws

Mercer County
Mercer County · Illinois

Mercer County Landlord-Tenant Law

Illinois landlord guide — eviction rules, courthouse info & local regulations

🏛️ County Seat: Aledo
👥 Population: ~15,500
⚖️ State: IL

Landlord-Tenant Law in Mercer County, Illinois

Mercer County is a northwestern Illinois county situated between the Mississippi River to the west and Rock Island County to the northeast. Aledo, the county seat, is a well-maintained agricultural community that serves as the commercial and governmental hub for a county known for its fertile farmland and the scenic Mississippi River bluffs along its western edge. The county also contains Keithsburg on the river and the small communities of Viola and New Windsor. All residential landlord-tenant matters in Mercer County are governed by Illinois state law — the Illinois Eviction Act (735 ILCS 5/9-201 et seq.) and the Security Deposit Return Act (765 ILCS 710). No local ordinances modify or supplement state law for residential rentals. Eviction actions are filed in the Mercer County Circuit Court in Aledo.

Cook DuPage Lake Will Kane Winnebago
McHenry Kendall Champaign Sangamon Peoria McLean
Rock Island Madison St. Clair Tazewell Macon Kankakee
Vermilion DeKalb Whiteside Jackson Adams LaSalle
Henry Bureau Stephenson Grundy Knox Macoupin
Williamson Ogle Morgan McDonough Effingham Clinton
Marion Franklin Lee Iroquois Carroll Coles
Logan Livingston Fulton Bond Jersey Woodford
Randolph Montgomery Shelby Perry Massac Ford
Moultrie Piatt Union Johnson Crawford Clark
Edgar DeWitt Christian Fayette Clay Richland
Lawrence Jasper Wayne Hamilton White Saline
Gallatin Hardin Pope Alexander Pulaski Washington
Jefferson Wabash Edwards Monroe St. Clair Calhoun
Pike Brown Schuyler Mason Menard Cass
Scott Greene Hancock Warren Henderson Mercer
Putnam Marshall Stark Peoria Jo Daviess Boone
Douglas Cumberland

📊 Mercer County Quick Stats

County Seat Aledo
Population ~15,500
Median Rent ~$660
Vacancy Rate ~11%
Landlord Rating 7/10 — Landlord-Friendly
Local Ordinances None beyond state law

⚖️ Eviction At-a-Glance

Nonpayment Notice 5-Day Notice to Pay or Quit
Lease Violation Notice 10-Day Notice to Cure or Quit
Termination (Month-to-Month) 30-Day Notice
Court Mercer County Circuit Court
Avg Timeline 3–6 weeks
Governing Law 735 ILCS 5/9-201; 765 ILCS 710

Mercer County Local Regulations

Mercer County has no local landlord-tenant ordinances. Illinois state law is the complete governing framework.

Category Details
Local Ordinances No local landlord-tenant ordinances exist in Mercer County or Aledo. Illinois state law governs all residential rental matters entirely.
Rent Control Prohibited statewide under 50 ILCS 825. No municipality in Mercer County may impose rent caps or stabilization measures.
Security Deposit Governed by 765 ILCS 710. Landlords must return deposits within 30 days of move-out with an itemized deduction statement. No local interest-bearing account requirement applies.
Rental Registration No rental registration or landlord licensing requirements are in effect in Mercer County as of 2026.
Notice Requirements 5-day written notice for nonpayment; 10-day notice to cure for lease violations; 30-day notice for month-to-month termination. Service must comply with 735 ILCS 5/9-211.

Last verified: 2026-04-01

🏛️ Mercer County Courthouse

Where landlords file eviction actions

🏛️ Courthouse Information and Locations for Illinois

💰 Eviction Cost Snapshot

Typical fees for a Mercer County eviction

💰 Eviction Costs: Illinois
Filing Fee 60-250
Total Est. Range $200-$700
Service: — Writ: —

Illinois Eviction Laws

State statutes that apply throughout Mercer County

⚡ Quick Overview

5
Days Notice (Nonpayment)
10
Days Notice (Violation)
30-60
Avg Total Days
$60-250
Filing Fee (Approx)

💰 Nonpayment of Rent

Notice Type 5-Day Notice to Pay or Quit
Notice Period 5 days
Tenant Can Cure? Yes - tenant can pay full rent demanded within 5 days to stop eviction
Days to Hearing 7-21 days
Days to Writ 7-14 days
Total Estimated Timeline 30-60 days
Total Estimated Cost $200-$700
⚠️ Watch Out

Only FULL payment of rent demanded within 5 days cures - partial payment does NOT waive landlord right to evict (except in Chicago/Cook County where accepting any rent waives right). Chicago RLTO and Cook County RTLO add significant additional protections. Chicago Fair Notice Ordinance requires 60-120 day notice for non-renewals depending on tenancy length. Court may stay eviction 60-180 days if landlord previously gave extensions.

Underground Landlord

📝 Illinois Eviction Process (Overview)

  1. Serve the required notice based on the eviction reason (nonpayment or lease violation).
  2. Wait for the notice period to expire. If tenant cures the issue (where allowed), the process stops.
  3. File an eviction case with the Circuit Court - Forcible Entry and Detainer. Pay the filing fee (~$60-250).
  4. Tenant is served with a summons and has the opportunity to respond.
  5. Attend the court hearing and present your case.
  6. If you prevail, obtain a writ of possession from the court.
  7. Law enforcement executes the writ and removes the tenant if necessary.
⚠️ Disclaimer: This page provides general information about Illinois eviction laws and does not constitute legal advice. Eviction procedures can vary by county and may change over time. Local jurisdictions may have additional requirements or tenant protections. For specific legal guidance, consult a qualified Illinois attorney or local legal aid organization.
🐛 See an error on this page? Let us know
Underground Landlord Underground Landlord
🔍 Reduce Your Risk Before Signing a Lease: Illinois landlords who screen tenants carefully before signing a lease significantly reduce their risk of ending up in eviction court. Understanding tenant screening in Illinois — including background checks, credit history, income verification, and rental references — is one of the most cost-effective steps you can take to protect your rental property. Before you ever need Illinois's eviction process, proper tenant screening can help you identify red flags early and avoid problem tenancies altogether.
Ready to File?

Generate Illinois-Compliant Legal Documents

AI-generated, state-specific eviction notices, pay-or-quit letters, lease termination documents, and more — pre-filled with your tenant's information and built to Illinois requirements.

Generate a Document → View AI Hub →

⏱ Notice Period Calculator

Calculate your required notice period

📋 Notice Period Calculator

Select your state, eviction reason, and the date you plan to serve notice. We'll calculate your earliest filing date and key milestones.

⚠️ Disclaimer: These calculations are estimates based on state statutes and typical court timelines. Actual results vary by county, court backlog, and case specifics. Always verify current requirements with your local courthouse. This is not legal advice.
Underground LandlordUnderground Landlord

🏙️ Communities in Mercer County

Cities, villages, and townships

Aledo
Viola
Keithsburg
New Windsor
Mercer County

Screen Before You Sign

Mercer County’s agricultural and commuter workforce benefits from consistent income verification and rental history screening before every lease.

Run a Tenant Background Check →

A Landlord’s Guide to Renting in Mercer County, Illinois

Mercer County sits in a particularly attractive corner of northwestern Illinois, bordered on the west by the Mississippi River and positioned between the Quad Cities metropolitan area to the north and the quieter agricultural counties to the south. Aledo, the county seat, is a well-kept community with a working courthouse square, good schools, and an agricultural services sector that has sustained it through the broader population changes affecting rural Illinois. The county’s proximity to Rock Island County — and through it, to the Quad Cities metro — gives Mercer County a commuter dimension that supplements the purely agricultural employment base and supports a somewhat more active rental market than its population alone would suggest.

The Quad Cities Commuter Factor

The Quad Cities metro — anchored by Rock Island and Moline on the Illinois side and Davenport and Bettendorf on the Iowa side — represents one of the larger regional employment centers in the upper Midwest. For workers who prefer rural living but need access to metro-scale employment, Mercer County offers a compelling option. Aledo is approximately forty minutes from the core of the Quad Cities, a drive that many workers find acceptable in exchange for lower housing costs, less congestion, and a quieter community environment. This commuter dynamic supports rental demand from employed, middle-income workers who are more financially stable than the purely agricultural worker tenant base would suggest.

Mississippi River Communities

Keithsburg, on the Mississippi River in the western part of the county, has a distinct character from Aledo — a small river town with a boat landing, recreational appeal, and seasonal visitors drawn to the river. Rental demand in Keithsburg is modest and reflects the community’s small scale, but the river setting gives it a character that attracts a different tenant profile than the agricultural interior. The county also contains Viola, a small agricultural community in the eastern part of the county, and New Windsor to the northeast.

Legal Framework

All residential tenancies in Mercer County are governed exclusively by Illinois state law. The Eviction Act (735 ILCS 5/9-201) and the Security Deposit Return Act (765 ILCS 710) are the complete framework. No local ordinances in Aledo, Keithsburg, Viola, or anywhere else in the county add requirements. The Mercer County Circuit Court in Aledo handles eviction matters on a modest docket, and uncontested cases move efficiently through the process. Security deposit management follows the 30-day return requirement with itemized documentation. Landlords who screen carefully, document thoroughly, and maintain their properties above the local average are well-positioned for consistent returns in a county that benefits from both agricultural stability and Quad Cities commuter demand.

Neighboring Illinois Counties

← View All Illinois Landlord-Tenant Law

Disclaimer: This page provides general information about landlord-tenant law in Mercer County, Illinois and is not legal advice. Always verify current requirements with the Mercer County Circuit Court or a licensed Illinois attorney before taking legal action. Last updated: April 2026.

📋

View Membership Plans

Compare plans and pricing.

Explore by State

ALAKAZARCACOCTDEDCFLGAHIIDILINIAKSKYLAMEMDMAMIMNMSMOMTNENVNHNJNMNYNCNDOHOKORPARISCSDTNTXUTVTVAWAWVWIWY

Click any state to explore resources

🏠

Manage Your Properties

Track every expense automatically.

Browse Laws by State

AL AK AZ AR CA CO CT DE DC FL GA HI
ID IL IN IA KS KY LA ME MD MA MI MN
MS MO MT NE NV NH NJ NM NY NC ND OH
OK OR PA RI SC SD TN TX UT VT VA WA
WV WI WY