Local directory · Alton, IL

General Contractors in Alton, IL

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

There are 78 general contractors in Madison County, IL (US Census - County Business Patterns). Below you'll find 17 of them listed by name, from Google - 17 include a phone number and 11 have a website link. All listings here are free, and any owner can claim their page on the hashtag.org network.

General Contractors directory · Alton

Data: Listings via Google

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Local news · General Contractors · Alton

General Contractors in Alton — FAQ

How many general contractors are in Alton, IL?
Madison County, IL has 78 general contractor business locations according to the US Census (County Business Patterns). 17 of these companies are listed here by name.
How many of these general contractors list contact details?
Out of the 17 general contractors listed here, 17 have phone numbers and 11 are linked to a website.
Is this Alton general contractors directory free?
All listings are based on reliable data from US Census County Business Patterns and Google. Any business can claim their page on hashtag.org at no cost.

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