Attleboro, MA: what USGS's seismic model says

Attleboro carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Attleboro ranks above 59% of the 4,875 cities in this dataset for seismic hazard - the 59th percentile.

Where Attleboro sits in Massachusetts

USGS's underlying values for Attleboro: 0.114g peak ground acceleration, 0.205g at short period, 0.057g at 1 second. Within Massachusetts alone, Attleboro ranks 41 of 58 cities by seismic hazard - the 30th percentile in-state. Attleboro has a population of about 47,085.

Retrofit economics for Attleboro

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Massachusetts specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Massachusetts.

Earthquake insurance for a Attleboro home

A Attleboro homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Attleboro's figures come from

Attleboro's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Attleboro.