Madison County · updated October 2026

Alton, IL business directory

18 local trades in Alton, Illinois. Establishment counts come from the US Census County Business Patterns data for Madison County; the named businesses come from OpenStreetMap (© OpenStreetMap contributors). Pick a trade to see the real providers in Alton.

Written & reviewed by Founder, SEO Local · 22 years in SEO · Updated October 2026 · LinkedIn
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