Cook County Value

1640 W Ontario St, Chicago, IL 60622

3 bed / 1 bath, 1,305 sqft, built 1879, in Jefferson. Assessor market value for 2026: $590,010.

Cook County account 17072150830000

Assessor market value
$590,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,305 sqft
$452 per sqft
Year built
1879
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 60622 and Jefferson assessment pages.

Local guide: West Chicago Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For West Chicago, appeals to the Assessor closed . Board of Review dates for West Chicago 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 $590,010 in 2025 to $590,010 in 2026.
  • Assessor market value per square footThe current public record shows about $452 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 60622.
  • Neighborhood value signalAmong 3,753 residential records in the same neighborhood, the average assessor market value is about $356 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.

  • 1525 W Pearson St, Chicago, IL 60642
    1,280 sqft | $281/sqft | built 1878 | Similar size (1,280 vs 1,305 sqft); Similar age (1878 vs 1879); Similar lot size (2,350 vs 2,510 sqft)
    $360,010
  • 1957 W Ohio St 1, Chicago, IL 60622
    1,313 sqft | $412/sqft | built 1882 | Similar size (1,313 vs 1,305 sqft); Similar age (1882 vs 1879); Similar lot size (2,280 vs 2,510 sqft)
    $541,570
  • 1613 W Hubbard St, Chicago, IL 60622
    1,280 sqft | $289/sqft | built 1886 | Similar size (1,280 vs 1,305 sqft); Similar lot size (2,400 vs 2,510 sqft); Same quality (Average)
    $370,000
  • 2208 W Hubbard St 2, Chicago, IL 60612
    1,354 sqft | $398/sqft | built 1880 | Similar size (1,354 vs 1,305 sqft); Similar age (1880 vs 1879); Similar lot size (2,400 vs 2,510 sqft)
    $538,830
  • 824 N Noble St, Chicago, IL 60642
    1,360 sqft | $283/sqft | built 1884 | Similar size (1,360 vs 1,305 sqft); Similar age (1884 vs 1879); Similar lot size (2,394 vs 2,510 sqft)
    $384,250

Recent comparable sales

Sales selected by similarity to the subject property.

Public appraisal comparison for 2026. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

No change in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$590,010$00.0%
2025$590,010$00.0%
2024$590,010+$44,130+8.1%
2023$545,880$00.0%
2022$545,880−$64,120−10.5%
2021$610,000+$206,230+51.1%
2020$403,770——
6-year total+$186,240+46.1%