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There are a whole bunch of insurance agencies, 636 to be exact, according to the US Census (County Business Patterns) for DuPage County, Illinois. I looked around on OpenStreetMap and found just two that are named. Two of them have phone numbers listed; one even has a website link. These listings are totally free, by the way, and if you own one, you can claim it yourself over on hashtag.org.
Data: © OpenStreetMap contributors