Cook County Value

6638 N Oconto Ave, Chicago, IL 60631

4 bed / 2 bath, 1,999 sqft, built 1932, in Jefferson. Assessor market value for 2025: $500,010.

Cook County account 09364140220000

Assessor market value
$500,010
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,999 sqft
$250 per sqft
Year built
1932
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 $500,010 in 2024 to $500,010 in 2025.
  • Assessor market value per square footThe current public record shows about $250 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.

  • 6721 N Oconto Ave, Chicago, IL 60631
    1,993 sqft | $246/sqft | built 1933 | Similar size (1,993 vs 1,999 sqft); Similar age (1933 vs 1932); Similar lot size (4,125 vs 4,125 sqft)
    $490,010
  • 6727 N Oconto Ave, Chicago, IL 60631
    2,010 sqft | $239/sqft | built 1930 | Similar size (2,010 vs 1,999 sqft); Similar age (1930 vs 1932); Similar lot size (4,125 vs 4,125 sqft)
    $480,010
  • 6756 N Octavia Ave, Chicago, IL 60631
    2,010 sqft | $240/sqft | built 1937 | Similar size (2,010 vs 1,999 sqft); Similar age (1937 vs 1932); Similar lot size (4,062 vs 4,125 sqft)
    $482,800
  • 6722 N Odell Ave, Chicago, IL 60631
    1,989 sqft | $239/sqft | built 1925 | Similar size (1,989 vs 1,999 sqft); Similar lot size (4,125 vs 4,125 sqft); Same quality (Average)
    $474,880
  • 6539 N Onarga Ave, Chicago, IL 60631
    1,957 sqft | $241/sqft | built 1928 | Similar size (1,957 vs 1,999 sqft); Similar age (1928 vs 1932); Similar lot size (4,166 vs 4,125 sqft)
    $472,070

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$500,010$00.0%
2024$500,010+$71,900+16.8%
2023$428,110$00.0%
2022$428,110$00.0%
2021$428,110+$51,820+13.8%
2020$376,290——
5-year total+$123,720+32.9%