Mount Pleasant, MI: what USGS's seismic model says

Mount Pleasant carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. That puts Mount Pleasant in the 11th percentile nationally for seismic hazard - higher than 11% of the 4,875 US cities USGS was checked against here.

How Mount Pleasant compares

USGS's underlying values for Mount Pleasant: 0.031g peak ground acceleration, 0.065g at short period, 0.04g at 1 second. Within Michigan alone, Mount Pleasant ranks 137 of 153 cities by seismic hazard - the 11th percentile in-state. Mount Pleasant has a population of about 21,090.

Retrofit economics for Mount Pleasant

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 Michigan 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 Michigan.

Insuring against this, not just retrofitting

A Mount Pleasant 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 Pleasant's figures come from

Mount Pleasant's Category A 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 A does and doesn't tell you about Mount Pleasant.