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HOLIDAY & SPECIAL EVENTS CALENDAR

Calendar Legend  |  Meeting Schedule

All Oklahoma County Government offices will be closed on 2024 Holidays (observed) and 2025 Holidays (observed). For the Meeting schedule, or to research Agendas, visit the County Legistar (You will be taken away from the website).

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06Apr
06Apr

Property Valuation Appeal Deadline

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Apr 06, 2026 — Apr 06, 2026 (UTC-06:00) Central Time (US & Canada)   
Event details
1st Monday in April:
  • A taxpayer may file a appeal if the valuation of property has not increased or decreased from the previous year if the appeal is filed on or before the first Monday in April. Such appeal shall be made upon a form prescribed by the Oklahoma Tax Commission.
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  • Time
    Apr 06, 2026 — Apr 06, 2026
    (UTC-06:00) Central Time (US & Canada)

    Upcoming dates
    Apr 07, 2025 AM 12:00
    Apr 06, 2026 AM 12:00
    Apr 05, 2027 AM 12:00
    Apr 03, 2028 AM 12:00
    Apr 02, 2029 AM 12:00
    Apr 01, 2030 AM 12:00

Legend 

     Elections & Community Events - Voting and election dates. Community events where the public is welcomed to attend.

     IAAO Courses - Please visit the Oklahoma County IAAO Chapter web page for more information.

     Important Dates - This category includes deadlines & important dates.

     Observed Holidays - All Oklahoma County Government offices will be closed.

     Notice - This category includes notices and reminders.

     US Holidays - Nationally recognized days of significance.