There are 24,476 flood insurance policyholders in Massachusetts facing premium cost increases as part of changes to the National Flood Insurance Program.
Some of the highlights from an analysis by The Associated Press of data from the Federal Emergency Management Agency:
Percentage of flood insurance policyholders facing an increase: 41.6 percent
Policies facing annual increases up to 18 percent: 17,092
Policies facing mandatory annual 25-percent increases: 7,384
Businesses affected: 1,869
Annual premiums paid in 2013: $73.8 million
Paid flood claims all-time: $345 million