FHA Loan Limits and USDA Eligibility in Knox County, Illinois
2026 FHA one-unit limit in Knox County is $541,287. Two-unit is $693,050, three-unit is $837,700, and four-unit is $1,041,125. USDA 502 Guaranteed 1–4 person moderate income is $122,800. Enter a ZIP on the maps. USDA scores the property address, not the county.
2026 FHA Loan Limits Map for Illinois
Illinois one-unit limits: —
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Standard Floor: $541,287Mid-Tier: $541,288–$750,000High-Cost: $750,001–$1,000,000Elite Zone: $1,000,001+
USDA Property Eligibility and Income Limits Map for Illinois
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EligibleIneligibleUSDA ineligible boundary
Knox County FHA Loan Limits and USDA Income
FHA one-unit caps are county. USDA 1–4 person guaranteed income can split a county; when a ZIP lists more than one cap, both are listed. This table does not mark a ZIP as USDA eligible or ineligible.
| ZIP | FHA one-unit loan limit | USDA 1–4 person moderate income |
|---|---|---|
| 61401 | $541,287 | $122,800 |
| 61410 | $541,287 | $122,800 |
| 61414 | $541,287 | $122,800 |
| 61428 | $541,287 | $122,800 |
| 61430 | $541,287 | $122,800 |
| 61436 | $541,287 | $122,800 |
| 61439 | $541,287 | $122,800 |
| 61448 | $541,287 | $122,800 |
| 61458 | $541,287 | $122,800 |
| 61467 | $541,287 | $122,800 |
| 61472 | $541,287 | $122,800 |
| 61474 | $541,287 | $122,800 |
| 61485 | $541,287 | $122,800 |
| 61488 | $541,287 | $122,800 |
| 61489 | $541,287 | $122,800 |
| 61544 | $541,287 | $122,800 |
| 61572 | $541,287 | $122,800 |