Johnson County, Illinois has a 2026 one-unit conforming loan limit of $832,750, which is 5.2 times the county's median home value of $160,500, so a typical home there can be financed with a conforming (non-jumbo) loan; median household income is $62,528 (FHFA; Census ACS 2020–2024).
Data as of 2026. Source: FHFA 2026 conforming loan limits; U.S. Census Bureau ACS 2020–2024
| Item | Value |
|---|---|
| 1-unit limit (2026) | $832,750 |
| 2-unit limit | $1,066,250 |
| 3-unit limit | $1,288,800 |
| 4-unit limit | $1,601,750 |
| Median home value (ACS 2020–24) | $160,500 |
| Illinois median home value | $263,300 |
| Limit ÷ median home value | 5.19× |
| Median household income | $62,528 |
| Median home value ÷ income | 2.6× |
| Population | 13,376 |
| Median property tax paid (owners) | $1,992 |
| Effective property tax rate (approx.) | 1.24% |
| Owner-occupied homes | 82.0% |
| Home value rank in Illinois | 32 of 102 counties |
| Neighbor: Massac County, IL | limit $832,750; median home $121,900 |
| Neighbor: Pope County, IL | limit $832,750; median home $143,800 |
| Neighbor: Pulaski County, IL | limit $832,750; median home $85,100 |
| Neighbor: Saline County, IL | limit $832,750; median home $94,300 |
| Neighbor: Union County, IL | limit $832,750; median home $131,700 |
| Neighbor: Williamson County, IL | limit $832,750; median home $156,400 |
Across Illinois's 102 counties, FHFA's 2026 one-unit limits are $832,750 everywhere. Johnson County's median home value is 39% below the state median of $263,300 (rank 32 of 102). Among its 6 neighboring counties, Williamson County has the highest median home value ($156,400) and Pulaski County the lowest ($85,100); all share the same loan limit. Owners pay a median $1,992 a year in property tax, an effective rate of about 1.24% of home value.
County data: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024 (tables B25077, B19013, B01003, B25103, B25003). Neighbors: Census county adjacency file.
Related
- 2026 conforming loan limit: Johnson County, AR
- 2026 conforming loan limit: Johnson County, GA
- 2026 conforming loan limit: Johnson County, IA
- 2026 conforming loan limit: Johnson County, IN
- 2026 conforming loan limit: Johnson County, KS
- 2026 conforming loan limit: Johnson County, KY
- 2026 conforming loan limit: Johnson County, MO
- 2026 conforming loan limit: Johnson County, NE
Last updated 2026-10-16. Data only, not financial or tax advice.