IL mortgage rates

St. Clair County

Clear, current 2026 mortgage and refinance loan limits for homeowners in St. Clair County, Illinois. Use the verified baseline numbers below to calculate your refinance payment, evaluate your home equity, and monitor when rate alerts make refinancing advantageous.

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2026 limits

2026 Mortgage Loan Limits

St. Clair County

Conforming Loan Limits

Per property
1 unit$832,750
2 units$1,066,250
3 units$1,288,800
4 units$1,601,750

FHA Loan Limits

Per property
1 unit$541,287
2 units$693,050
3 units$837,700
4 units$1,041,125

Source: Official Federal Housing Finance Agency (FHFA) and HUD loan limit schedules. Conforming data represents conventional maximums. Last synchronized: 2026 update cycle.

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Refinance Payment Estimate

Estimate Your Refinance in St. Clair County

Use your current mortgage details to estimate a new refinance payment and potential monthly savings.

Estimated New Monthly Payment$2,528Principal & interest only
Home value − mortgage balance
Mortgage balance ÷ home value
Added to the proposed new loan
Proposed New Loan Amount$400,000
Estimated New Payment$2,528
Estimated Monthly SavingsAdd current rate
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Estimates include principal and interest only. Taxes, insurance, closing costs, and mortgage insurance are not included.

About St. Clair

A local view of the market.

St. Clair County, IL, has a diverse real estate market, with median home values around $208,000 in 2024. Its location near St. Louis makes it popular among families and commuters. Belleville, the county seat, has a population of about 42,000, featuring shopping, dining, and cultural sites. Fairview Heights and O'Fallon offer suburban amenities and strong communities. St. Clair County offers a mix of suburban and urban areas, with an economy based on healthcare, retail, and manufacturing. Its proximity to St. Louis and diverse lifestyle options make it attractive for various demographics.

County snapshot

Market context.

IL

Public location data associated with this county record. Optional fields are shown only when present in the source.

Market areaSt. LouisMapped market area
Area code41180CBSA / MSA reference
Data year2026Aligned with this limit record
Questions & Answers

Refinancing in St. Clair County

Common questions about 2026 loan limits and refinancing opportunities in Illinois.

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