IL mortgage rates

Williamson County

Clear, current 2026 mortgage and refinance loan limits for homeowners in Williamson 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

Williamson 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 Williamson 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 Williamson

A local view of the market.

Williamson County, IL, has a stable real estate market, with median home values around $219,000 in 2024. Located in southern Illinois, it attracts families and retirees with its scenic landscapes and small-town charm. Marion, the county seat, has a population of about 17,000, offering shopping, dining, and parks. Herrin is another key town, adding to the county’s suburban amenities. Williamson County is suburban-rural, with an economy based on healthcare, retail, and light manufacturing. Its affordability, scenic environment, and community-centered living make it ideal for those seeking a balanced lifestyle.

County snapshot

Market context.

IL

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

Market areaCarbondale-MarionMapped market area
Area code16060CBSA / MSA reference
Data year2026Aligned with this limit record
Questions & Answers

Refinancing in Williamson County

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

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