Midlothian's Seismic Design Category, explained

Midlothian 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 Midlothian in the 40th percentile nationally for seismic hazard - higher than 40% of the 4,875 US cities USGS was checked against here.

How Midlothian compares

USGS's underlying values for Midlothian: 0.063g peak ground acceleration, 0.125g at short period, 0.067g at 1 second. Within Illinois alone, Midlothian ranks 181 of 330 cities by seismic hazard - the 45th percentile in-state. Midlothian has a population of about 13,870.

Retrofit economics for Midlothian

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 Illinois 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 Illinois.

Earthquake insurance for a Midlothian home

A Midlothian 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 Midlothian's figures come from

Midlothian'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 Midlothian.