Mount Arlington, NJ: what USGS's seismic model says
Mount Arlington 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. That puts Mount Arlington in the 61th percentile nationally for seismic hazard - higher than 61% of the 4,875 US cities USGS was checked against here.
How Mount Arlington compares
USGS's underlying values for Mount Arlington: 0.143g peak ground acceleration, 0.242g at short period, 0.055g at 1 second. Within New Jersey alone, Mount Arlington ranks 137 of 194 cities by seismic hazard - the 30th percentile in-state. Mount Arlington has a population of about 5,979.
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.
What this means for insurance
A Mount Arlington 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 Mount Arlington's figures come from
Mount Arlington'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 Mount Arlington.