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Who is my U.S. representative in MO-03?
Your U.S. representative for Missouri’s 3rd Congressional District (MO-03) is Robert F. Onder Jr. (Republican). House.gov +1 Rep. Onder serves in the U.S. House of Representatives for MO-03. His Washington office is listed as: Office: 1113 Longworth House Office Building Phone: (202) 225-2956 House.gov If you want to confirm your district by your exact address or ZIP code (some ZIP codes cross district lines), the House’s official “Find Your Representative” tool can verify it. House.gov
Cited sources
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Robert F. Onder Jr. as the U.S. representative for MO-03, matching the ground truth.
Human
not reviewed
Final
accurate
Ground truth
representative: Robert Onder
clerk.house.gov 100
as of 2026-07-07