# 17109 — 2026 conforming loan limits by county: one- to four-unit properties

For 17109, fips state code is 17; fips county code is 109; county name is MCDONOUGH COUNTY; state is IL; cbsa number is 31380, verified against its source on 2026-08-07.

- **FIPS State Code:** 17 _(verified: appears in the quote below)_
- **FIPS County Code:** 109 _(verified: appears in the quote below)_
- **FIPS Code:** 17109 _(our reading, not quoted from the source)_
- **County Name:** MCDONOUGH COUNTY _(verified: appears in the quote below)_
- **State:** IL _(verified: appears in the quote below)_
- **CBSA Number:** 31380 _(verified: appears in the quote below)_
- **One-Unit Limit:** $832,750 _(verified: appears in the quote below)_
- **Two-Unit Limit:** $1,066,250 _(verified: appears in the quote below)_
- **Three-Unit Limit:** $1,288,800 _(verified: appears in the quote below)_
- **Four-Unit Limit:** $1,601,750 _(verified: appears in the quote below)_

## What the source says

> 17,109,MCDONOUGH COUNTY,IL,31380,"$832,750 ","$1,066,250 ","$1,288,800 ","$1,601,750 "

## Source

- https://www.fhfa.gov/document/d/cll/fullcountyloanlimitlist2026_hera-based_final_flat.csv

Last verified: 2026-08-07. Review by: 2027-08-07.
Part of [2026 conforming loan limits by county: one- to four-unit properties](https://referencesource.org/conforming-loan-limits/).