Morristown's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Morristown in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Morristown sits at the 62th percentile for seismic hazard among 4,875 US cities.

How Morristown compares

USGS's underlying values for Morristown: 0.16g peak ground acceleration, 0.265g at short period, 0.058g at 1 second. Within New Jersey alone, Morristown ranks 108 of 194 cities by seismic hazard - the 45th percentile in-state. Morristown has a population of about 20,732.

Bracing and bolting: the actual cost

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 New Jersey 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 New Jersey.

Insuring against this, not just retrofitting

A Morristown 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 Morristown's figures come from

Morristown'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 Morristown.