How often do Flood zones change from FEMA?

Flood zones designated by FEMA can change periodically, typically every 5 to 10 years, but adjustments may occur more frequently in response to significant environmental changes, new data, or updated flood risk assessments. Local governments may also request updates to reflect changes in land use or infrastructure. Property owners are encouraged to stay informed about flood zone designations, as changes can impact insurance requirements and property values. Regularly reviewing FEMA's Flood Insurance Rate Maps (FIRMs) is essential for understanding current flood risk.