St. Clair County · IL
Inground pool costs in O'Fallon, IL
Homeowners in O'Fallon usually start with the same St. Louis planning ranges: vinyl-liner projects from about $35,000, fiberglass from about $45,000, and custom gunite from about $60,000. Your lot, access, and deck choices decide the real quote.
Local notes for O'Fallon
O'Fallon, Illinois is the metro-east's growth suburb — newer subdivisions, military families from nearby Scott Air Force Base, and housing stock that skews young and uniform in the best way for builders: predictable lots, documented utilities, workable access. HOA standards and rear-yard stormwater features are the standard constraints, and medium-to-large fiberglass shells are a frequent starting point because the yards accept them without drama.
Permit notes
Confirm City of O'Fallon, Illinois requirements and any subdivision review, along with setbacks, barrier rules, and inspections.
Starter content: verify permit, setback, fence, and inspection requirements with the relevant city and county offices before relying on this page for a project decision.
ZIP codes covered on this page
62269
Typical project ranges
Fiberglass pool
$45,000–$85,000
Shell, standard excavation, equipment pad, basic plumbing and electrical, and standard coping or concrete collar.
Vinyl-liner pool
$35,000–$65,000
Kit, excavation, walls, liner, standard equipment, and basic concrete decking allowance.
Gunite / concrete pool
$60,000–$120,000
Custom shape and finish potential; final pricing varies heavily with size, access, features, and finish.
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