Cook County Value

6651 N Onarga Ave, Chicago, IL 60631

5 bed / 1 bath, 1,942 sqft, built 1927, in Jefferson. Assessor market value for 2025: $470,010.

Cook County account 09364120140000

Assessor market value
$470,010
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,942 sqft
$242 per sqft
Year built
1927
Average quality

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 60631 and Jefferson assessment pages.

Appeal deadlines

Jefferson 2026 appeal dates have not been published yet.

Deadline rule: Set by township: file with the Assessor by your township's last file date, and with the Board of Review while your township is open there. Evidence is reviewed by the Cook County Assessor's Office or, in a separate appeal, by the Cook County Board of Review. Dates checked against the official source.

Assessment snapshot

These public CCAO records highlight what may be worth checking before you file.

  • Assessment changeThe assessor market value stayed about the same, from $470,010 in 2024 to $470,010 in 2025.
  • Assessor market value per square footThe current public record shows about $242 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Jefferson neighborhood and ZIP 60631.
  • Neighborhood value signalAmong 1,989 residential records in the same neighborhood, the average assessor market value is about $282 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

Similar public appraisal records selected for this property's equity comparison.

  • 7255 W Coyle Ave, Chicago, IL 60631
    1,968 sqft | $265/sqft | built 1927 | Similar size (1,968 vs 1,942 sqft); Built same year (1927); Similar lot size (4,720 vs 4,687 sqft)
    $521,340
  • 7323 W Lunt Ave, Chicago, IL 60631
    1,920 sqft | $260/sqft | built 1926 | Similar size (1,920 vs 1,942 sqft); Similar age (1926 vs 1927); Similar lot size (4,720 vs 4,687 sqft)
    $500,000
  • 7007 N Osceola Ave, Chicago, IL 60631
    1,977 sqft | $228/sqft | built 1925 | Similar size (1,977 vs 1,942 sqft); Similar age (1925 vs 1927); Similar lot size (4,704 vs 4,687 sqft)
    $450,000
  • 7221 W Coyle Ave, Chicago, IL 60631
    1,955 sqft | $266/sqft | built 1931 | Similar size (1,955 vs 1,942 sqft); Similar age (1931 vs 1927); Similar lot size (4,720 vs 4,687 sqft)
    $520,000
  • 7330 W Ibsen St, Chicago, IL 60631
    1,984 sqft | $262/sqft | built 1930 | Similar size (1,984 vs 1,942 sqft); Similar age (1930 vs 1927); Similar lot size (4,720 vs 4,687 sqft)
    $520,000

Recent comparable sales

Sales selected by similarity to the subject property.

Public appraisal comparison for 2025. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

No change in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$470,010$00.0%
2024$470,010+$70,010+17.5%
2023$400,000$00.0%
2022$400,000$00.0%
2021$400,000−$5,810−1.4%
2020$405,810——
5-year total+$64,200+15.8%