Ogle County deadline tracker

Ogle County 2026 assessment appeal deadlines

In Ogle County, you don't get one countywide deadline. Each township publishes its assessment list in a local newspaper, then you generally have about 30 days to file with the Board of Review. City limits are not township lines — check your parcel.

How to use this tracker Find your township → note its status → if open, run a free estimate; if TBD, get an alert; if closed, review next-step options.
Open — You can still file for 2026. TBD — The assessment list is not published yet. Closed — The 2026 Board of Review window ended.

Verified against Ogle County sources: October 7, 2026. Statuses use America/Chicago time.

Open for 2026 filing

0 townships

Publication date still TBD

24 townships
TBD

Brookville Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Buffalo Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Byron Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Dement Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Eagle Point Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Flagg Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Forreston Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Grand Detour Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Lafayette Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Leaf River Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Lincoln Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Lynnville Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Marion Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Maryland Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Monroe Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Mount Morris Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Oregon-Nashua Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Pine Creek Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Pine Rock Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Rockvale Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Scott Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Taylor Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

White Rock Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

TBD

Woosung Township

Not published yet. The 2026 filing deadline has not been posted.

You can prepare now, but confirm the official publication before treating the window as open.

2026 filing window closed

0 townships

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Official Ogle County sources

Ogle County Residential Complaint form §I and Board of Review Rules (REVISED 2026): this form must be completed and filed within 30 days of the assessment change publication list for the parcel's respective township. Check www.oglecountyil.gov for publication dates. As of 2026-10-07 CT, no static per-township 2026 publication/deadline table is posted — township deadline rows stay TBD (do not invent dates). Faxed/digital copies of the form will not be accepted; submit by mail (postmark) or in person at Board of Review Ogle County, 105 S 5th St. Suite 215 / P.O. Box 40, Oregon, IL 61061, (815) 732-1150. Form and evidence must be submitted in triplicate for all appeals; if a reduction of $100,000 or more is sought, one additional copy per taxing district is required. Valuations as of 1/1/2026 reflect sales from 2023, 2024, and 2025.

Disclaimer: HomeTaxChallenge is not a government agency and is not affiliated with the Ogle County Assessment Office or Ogle County Board of Review. Always confirm dates on the official county sources above. This is not legal, tax, or appraisal advice.