Mary E. Miller
IL · District 15
Republican
Raised $1,331,399 · 352K followers (office + personal) · missed 4.5% of votes
Joint Committee on Printing · House Committee on Agriculture +9 more
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US Federal Government Directory › Districts › Illinois's 15th district
Illinois's 15th district
U.S. House district profile: the sitting representative, 2024 Census demographics (119th-district boundaries), partisan lean, and 2026 race rating.
Representative
Cook PVI: R+20
District demographics
| Measure | Value |
|---|---|
| Population | 739,197 |
| Median household income | $74,855 |
| Median age | 43.6 |
| Bachelor's degree or higher | 27.6% |
| White alone | 88.9% |
| Black alone | 2.6% |
| Hispanic or Latino | 3.3% |
| Asian alone | 0.9% |
| Unemployment rate | 3.3% |
| Population density (per sq mi) | 44 |
Source: U.S. Census Bureau, 2024 American Community Survey 1-year estimates (tables B01003, B01002, B19013 and related), 119th Congress district boundaries, released September 2025; land area from the 2025 Gazetteer.