Membership of the Association of Local Authority Risk Managers (Alarm) has topped the 1,200 mark and is on the way to tripling within four years.
Membership has grown from 450 public sector risk managers in January 1997 to 1,100 at the start of 2000.
The latest figures represent a growth of more than 160% over the period. Alarm says more than 80% of the UK's 475 local authorities are now represented.
Chairman Kevin McGlone said: "This is clear confirmation that Alarm has come of age and is now punching its weight in terms of promoting risk management and the role of the risk manager in the public sector."