Looking for a modular home builder in Bethalto, IL? Describe your project once and up to three modular home builders who work in Bethalto and Madison County get back to you with a quote. It's free and there is no obligation.
Bethalto is home to about 9,183 people (2024 Census Bureau estimate), a shrinking community (−1.4% since 2020). With 1,210 people per sq mi, it is a suburban area. Rural lots and replacements of older homes here are good fits for modular construction.
Bethalto at a glance
- Population (Census Bureau estimate, 2024)
- 9,183 (−1.4% since 2020)
- Rank in Illinois
- 239th of 1,294 cities and towns
- Land area
- 7.6 sq mi
- Population density
- 1,210 people per sq mi (suburban)
- Type
- Village (Bethalto village)
- Main county
- Madison County
What to check before hiring in Bethalto
- Code: in Illinois, modular homes are built to the state or local building code.
- Site work: foundation, utilities, crane access and finishes must be in the quote.
- Access: delivery trucks and cranes need road and lot access.
- Price drivers: size, finishes, transport distance and site work.
Useful official resources
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Modular Home Builders Association
Official information and guidance.
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ICC: International Code Council
Official information and guidance.
Services available in Bethalto
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Modular home
Factory-built modular home delivered and set on a site-built foundation, with finish work.
Frequently asked questions in Bethalto
How much does a modular home cost in Bethalto, IL?
It depends on size, finishes, transport and site work. Describe your project: builders who serve Bethalto reply with a quote.
How long does it take?
Often a few months from order to move-in.
Can I customize the design?
Most modular builders offer customizable plans.
Which modular home builders will contact me?
Up to three independent modular home builders who serve Bethalto and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.