FEMA announced in September 2013 that insurance costs for certain flood policies are going to be increased dramatically as part of Section 100205 of the new Biggert Waters Flood Insurance Reform Act of 2012. This will impact properties with flood insurance in municipalities throughout the country.
FEMA provides a website with a map that includes the likely effects on counties in the country. To see this map, click on the link below.
If you zoom in to the Middlesex County in Massachusetts, and "click" anywhere within the county limits, a POP-UP screen provides the following infomation.
Name: Middlesex County
Subsidized Policies (affected by 205): 2,859
Policies that are not subsidized (not affected by 205): 4,504
of Policies Subsidized: 39%
Subsidized Polices per 10k Housing Units: 46.72
Population (County): 1,503,085
Housing Units (County) 612,004.00
A pie chart at the bottom of the POP-UP screen provides more information for each type of policy. To see even more information, "hover" over the sections of the pie chart. For example, there are 1,236 policies that are for primary homes, most of which won't be affected at all unless there's a sale, lapse in coverage, severe or repetitive flooding.