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Rockford, IL · Winnebago County · Population ~147,000 · No Rent Control (Illinois 765 ILCS 720 Preemption Act 1997) · Security Deposit Return Act 765 ILCS 710 · 30-Day Return 2× Penalty · 5-Day Notice to Pay or Quit · Winnebago County Circuit Court · Collins Aerospace ~4,000 Employees · OSF Saint Anthony Level I Trauma ~6,000 Employees · SwedishAmerican/UW Health Level I Trauma ~4,000 Employees · Jane Addams Nobel 1931 Rockford University · Amazon Prime Air Hub at RFD · 1BR 2026: $650–$1,100

Rockford IL rent increase 2026 Rockford, Illinois — Winnebago County seat and Illinois’ 5th-largest city (~147,000; 90 miles northwest of Chicago) — has no rent control. The Illinois Rent Control Preemption Act (765 ILCS 720, enacted 1997 as Public Act 89-567) bars all Illinois municipalities from capping rents. Rockford landlords may raise rent any amount at lease expiration. Security Deposit Return Act (765 ILCS 710): for 5+ unit buildings, return deposit within 30 days with itemized statement; penalty = 2× deposit + attorney fees. Non-payment eviction: 5-day pay-or-quit notice (735 ILCS 5/9-209); Winnebago County Circuit Court (400 W. State St, Rockford IL 61101). Home to Collins Aerospace (~4,000 employees), OSF Saint Anthony Medical Center (Level I Trauma; ~6,000 employees), SwedishAmerican Hospital/UW Health (Level I Trauma; ~4,000 employees), and Chicago Rockford International Airport (RFD; Amazon Prime Air cargo hub). Rockford University — alma mater of Nobel Peace Prize laureate Jane Addams (Nobel 1931). 1BR 2026: $650–$1,100.

Rockford, Illinois — Winnebago County seat, one of the Midwest’s most affordable rental markets, home to two Level I Trauma Centers and a significant aerospace manufacturing base — has no local rent control ordinance, and Illinois state law expressly prohibits one. Rockford landlords may raise rent freely at lease expiration.

Rockford landlords with 5+ units operate under the Illinois Security Deposit Return Act (765 ILCS 710): 30-day return deadline, itemized statement with receipts, and a 2× penalty for landlords who miss the deadline or fail to document deductions. Non-payment evictions require a 5-day pay-or-quit notice before filing in Winnebago County Circuit Court.

Illinois rent control law: what Rockford landlords must know

Illinois has prohibited all municipal rent control since 1997. The Illinois Rent Control Preemption Act (765 ILCS 720/1 et seq., enacted as Public Act 89-567) states that no municipality may enact, maintain, or enforce any ordinance or resolution which has the effect of controlling the amount of rent charged for leasing private residential or commercial property.

This preemption covers all Illinois municipalities regardless of home-rule status, including Rockford. Rockford City Council has no legal authority to:

  • Cap rent increases at any percentage or formula.
  • Establish a rent board or administrative review process.
  • Require landlords to justify rent increases.
  • Create any rent registry or annual filing requirement.

Rockford landlords may raise rent by any amount at lease expiration, with no cap, formula, or government approval required. For month-to-month tenancies, standard contractual practice is 30 days’ advance written notice — a notice requirement, not a cap. Legislative efforts to repeal preemption have failed in the Illinois General Assembly through 2026.

Illinois Security Deposit Return Act (765 ILCS 710): Rockford landlords

The Security Deposit Return Act (765 ILCS 710/5) applies to Illinois residential landlords with 5 or more units. Illinois imposes no cap on the deposit amount; Rockford market practice is typically 1–2 months’ rent (often $800–$1,400 in 2026).

  • Return deadline: 30 days after the tenant delivers possession. No forwarding address requirement to start the clock (unlike Texas or Missouri).
  • Itemized statement required for any deductions, identifying each damage item and its dollar cost.
  • Receipts required for any single repair or replacement costing more than $126 (CPI-adjusted): attach paid receipts or a contractor written estimate if work not yet completed.
  • Penalty for violation: 2× the deposit + attorney fees. Automatic upon proof of violation; no bad-faith showing needed. On a $1,000 deposit: $2,000 in statutory damages plus attorney fees.
  • 4-unit exemption: landlords of 4 or fewer units are covered only by common-law security deposit principles, not 765 ILCS 710’s penalty structure.

Disputes under $10,000 are heard in Winnebago County Circuit Court Small Claims division (400 W. State St, Rockford, IL 61101; Seventeenth Judicial Circuit).

Rockford eviction: the 5-day notice to pay or quit

Before a Rockford landlord may file an eviction action for non-payment of rent, Illinois law requires service of a 5-Day Notice to Pay Rent or Vacate (735 ILCS 5/9-209):

  • Written notice identifying the amount of rent due and the rental period for which it is owed.
  • Service: personal delivery; delivery to a household member 13+ at the unit; or posting on the main entry door plus certified mail.
  • Cure right: tenant pays all past-due rent within 5 days → landlord may not proceed with eviction for that non-payment.
  • Counting: period begins the day after service; weekends and holidays count.

After 5 days without payment or vacating: file Eviction Complaint in Winnebago County Circuit Court (400 W. State St, Rockford, IL 61101; Seventeenth Judicial Circuit; filing fee ~$150–$250; Winnebago County Sheriff service ~$30–$60). Hearing scheduled 14–21 days after filing. Total uncontested timeline: ~5–8 weeks from 5-day notice to physical possession.

Collins Aerospace: Rockford’s aerospace anchor

Collins Aerospace (a subsidiary of RTX Corporation, formerly Raytheon Technologies; principal Rockford facility at 4747 Harrison Ave, Rockford, IL 61108) is Rockford’s largest private-sector aerospace employer. Collins Aerospace in Rockford manufactures aircraft oxygen systems, crew breathing equipment, precision aerospace components, and power management systems — products that support military and commercial aviation globally.

The Rockford operation employs approximately 3,500–5,000 workers, including engineers, technicians, machinists, and program managers. Collins Aerospace engineers earn $65,000–$130,000+ annually, generating concentrated demand for quality 1BR and 2BR rental housing in east Rockford (East State Street, Harrison Avenue, Sandy Hollow Road corridors). The plant’s defense contracts — including oxygen systems for military aircraft — provide employment stability through aerospace market cycles.

OSF Saint Anthony & SwedishAmerican: dual Level I Trauma Centers

Rockford is one of a small number of US cities of its size to have two Level I Trauma Centers within its municipal boundaries — a distinction that anchors the city’s healthcare employment base:

OSF Saint Anthony Medical Center (1200 E. State St, Rockford, IL 61104; OSF HealthCare; Level I Adult Trauma Center; approximately 325 beds; ~5,500–6,500 employees): the flagship facility of OSF HealthCare’s northern Illinois network, providing comprehensive tertiary and quaternary care for Winnebago, Boone, Stephenson, and surrounding counties. OSF Saint Anthony is the leading referral center for complex surgical, cardiac, and oncological cases in the region.

SwedishAmerican Hospital — A Division of UW Health (1401 E. State St, Rockford, IL 61104; affiliated with the University of Wisconsin Health system; Level I Trauma Center; approximately 327 beds; ~3,500–4,500 employees): provides comprehensive inpatient and specialty care and serves as an academic affiliation site for UW Health physicians and residents. The UW Health affiliation gives SwedishAmerican access to tertiary subspecialty expertise from Madison, Wisconsin.

Together, these two hospitals employ approximately 10,000–11,000 workers in the healthcare sector — nurses, physicians, allied health professionals, and administrative staff earning $40,000–$250,000+ — making healthcare Rockford’s largest employment sector. Both hospitals are located on East State Street, creating a healthcare corridor that generates consistent demand for rental housing in east Rockford and the Auburn-Guilford area.

Rockford rental market: 2026 submarket overview

Rockford is among Illinois’ most affordable major rental markets, reflecting a large legacy housing stock, historical population stability, and modest net in-migration. Because Illinois prohibits rent control, all pricing is entirely market-driven:

  • East Rockford (OSF / SwedishAmerican / Collins Aerospace corridor): $750–$1,100 for 1BR. Primary professional rental segment; nearest to the two major employers; mix of older apartment buildings and single-family rentals.
  • North Rockford / Machesney Park / Loves Park: $700–$1,050 for 1BR. Near Chicago Rockford International Airport (RFD); logistics and aviation workers; Woodward Inc. facility nearby; suburban municipalities in Winnebago County.
  • South Rockford / near Rock Valley College: $650–$950 for 1BR. Most affordable segment; significant older single-family rental stock; student demand from Rock Valley College (~6,000 students).
  • Downtown Rockford (State Street arts district): $650–$950 for 1BR. Older converted warehouse and commercial stock; BMO Harris Bank Center (Rockford IceHogs AHL team) generates modest entertainment-district demand; renovation activity ongoing.
  • Near Rockford University: $700–$1,050 for 1BR. East Rockford; proximity to the Jane Addams Presidential Library; student and faculty market.

Rockford’s industrial heritage: from furniture to aerospace

Rockford developed as a leading U.S. manufacturing center in the late 19th and early 20th centuries. By 1900, Rockford was the nation’s largest producer of wooden furniture, with more than 25 major furniture factories employing thousands of Scandinavian immigrant workers (Swedish, Norwegian, and Danish families were a dominant cultural group). Rockford also led in machine tool and screw manufacturing, earning the nickname “the Screw Capital of the World” for its fastener and precision machining industries.

The transition to aerospace came through the 20th century: Sundstrand Corporation (founded 1905 in Rockford), which became a major aerospace power systems manufacturer, was acquired by United Technologies in 1999 and evolved into Collins Aerospace. Rockford remains a center for precision aerospace manufacturing, with Collins, Woodward, and numerous Tier-2 suppliers clustered in the city.

Cheap Trick — the rock band formed in Rockford in 1973 whose 1978 live album “At Budokan” became one of the best-selling live albums in history — is among Rockford’s most prominent cultural exports. Midway Village Museum (6799 Guilford Rd, Rockford) preserves the city’s manufacturing and cultural history.

Rent increase notice requirements in Rockford

Illinois imposes no statutory minimum advance notice period for residential rent increases in month-to-month tenancies (unlike California’s 90-day requirement for increases over 10%, Oregon’s 90-day notice, or Washington’s 180-day notice for increases over 3%). In Rockford, notice requirements for rent increases are entirely contractual.

Best practice: provide at least 30 days’ written advance notice before a month-to-month rent increase takes effect. No reason need be stated. No filing with any government agency is required. No amount cap applies.

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