Looking for a concrete leveling contractor in Johnston, IA? Describe your project once and up to three concrete leveling pros who work in Johnston and Polk County get back to you with a quote. It's free and there is no obligation.
Johnston is home to about 25,022 people (2024 Census Bureau estimate), a growing community (+4.5% since 2020). With 1,284 people per sq mi, it is a suburban area. Settling soils and runoff under slabs make sunken walkways and patios a common repair here.
Johnston at a glance
- Population (Census Bureau estimate, 2024)
- 25,022 (+4.5% since 2020)
- Rank in Iowa
- 20th of 940 cities and towns
- Land area
- 19 sq mi
- Population density
- 1,284 people per sq mi (suburban)
- Type
- City (Johnston city)
- Main county
- Polk County
What to check before hiring in Johnston
- Cause: ask what made the slab sink, often water from downspouts or poor joints.
- Joints: sealing joints after leveling helps keep water out.
- Sidewalks: public sidewalks may be the city's responsibility, or need a permit.
- Price drivers: slab size, how far it sank, access and the method.
Useful official resources
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American Concrete Institute
Official information and guidance.
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ICC: International Code Council
Official information and guidance.
Services available in Johnston
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Polyurethane foam lifting
Lifting and stabilizing sunken slabs by injecting polyurethane foam through small holes.
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Mudjacking
Lifting slabs by pumping a cement slurry underneath.
Frequently asked questions in Johnston
How much does concrete leveling cost in Johnston, IA?
It depends on slab size, how far it sank and the method. Describe the problem: pros who serve Johnston reply with a quote.
How long does it take?
Most residential jobs take a few hours.
Can cracked slabs be leveled?
Often yes, if the pieces are sound; badly broken slabs may need replacement.
Which concrete leveling pros will contact me?
Up to three independent concrete leveling pros who serve Johnston 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.