Northlake, IL: what USGS's seismic model says

Northlake 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, Northlake ranks above 39% of the 4,875 cities in this dataset for seismic hazard - the 39th percentile.

How Northlake compares

The raw figures: peak ground acceleration 0.062g, short-period spectral response 0.123g, 1-second spectral response 0.063g. Among 330 Illinois cities in this dataset, Northlake ranks 210 for seismic hazard, the 36th percentile within the state. About 12,433 people live in Northlake, Illinois.

What a retrofit costs in Northlake

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Illinois. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Earthquake insurance for a Northlake home

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a Northlake address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Northlake's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.