Congressional district · Boundaries of the 119th Congress

Missouri's 3rd district

Missouri's 3rd district has 773,941 residents on 7,585 mi² of land. It is represented by Robert F. Onder, Jr. (R-MO-3). Federal contract obligations attributed to it reached $69M in FY2026.

Residents
773,941
Land area
7,585 mi²
Counties
16
Representative
Robert F. Onder, Jr.
Open in the Congress explorer
Map of Missouri's 3rd district within Missouri

Members for this district

Members who held this seat while these boundaries were in force, newest first.

Senators

The state's senators today, or on the last day of these boundaries for an older plan.

Counties

Share of the district's residents living in each county, and share of the county's residents living in the district (2020 census tracts weighted by their overlap).

  1. St. Charles County39% of the district · 73% of the county
  2. Boone County14% of the district · 56% of the county
  3. Cole County10.0% of the district · 100% of the county
  4. Jefferson County8.9% of the district · 30% of the county
  5. Callaway County5.8% of the district · 100% of the county
  6. Miller County3.3% of the district · 100% of the county
  7. Washington County3.0% of the district · 100% of the county
  8. Crawford County2.9% of the district · 100% of the county
  9. Cooper County2.2% of the district · 100% of the county
  10. Moniteau County2.0% of the district · 100% of the county
  11. Gasconade County1.9% of the district · 100% of the county
  12. Osage County1.7% of the district · 100% of the county
  13. Warren County1.6% of the district · 33% of the county
  14. Montgomery County1.5% of the district · 100% of the county
  15. Camden County1.4% of the district · 26% of the county
  16. Maries County1.1% of the district · 100% of the county

Federal contracts

Contract obligations attributed to the district by each action's county and its award's ZIP code (land shares through census tracts); an estimate where ZIP codes cross district lines.

Obligations · FY2026
$69M
Per resident
$89.16
Rank in Missouri
8 of 8
Contract actions
4,342
New awards: 3,502

By fiscal year

  1. 132.2MFY2017
  2. 148.3MFY2018
  3. 137.7MFY2019
  4. 172.9MFY2020
  5. 102.6MFY2021
  6. 124.1MFY2022
  7. 150.1MFY2023
  8. 119.9MFY2024
  9. 137.4MFY2025
  10. 69MFY2026

Top buyers

  1. Department of Veterans Affairs$30.5M44%
  2. Defense Logistics Agency$13.3M19%
    Department of Defense
  3. Federal Aviation Administration$10.1M15%
    Department of Transportation
  4. Department of the Navy$4.2M6.2%
    Department of Defense
  5. Environmental Protection Agency$2.8M4.1%
  6. U.S. Geological Survey$2.2M3.1%
    Department of the Interior
  7. Public Buildings Service$1.5M2.2%
    General Services Administration
  8. Social Security Administration$1.1M1.6%

Top recipients

  1. MIDWEST WEATHER, INC.$9.9M14%
    4 awards
  2. ENGINEERED COIL COMPANY$8.3M12%
    277 awards
  3. GUARANTEE INTERIORS, INC.$7.5M11%
    15 awards
  4. ATTA ELEVATORS USA, INC$3.6M5.3%
    1 award
  5. DUBUQUE BARGE AND FLEETING SERVICE CO$3.6M5.1%
    1 award
  6. STAUDER CONSULTING, INC.$2.8M4.1%
    7 awards
  7. UNIVERSITY OF MISSOURI SYSTEM$2.5M3.6%
    28 awards
  8. HYDROGEOLOGIC, INC.$2.3M3.3%
    4 awards
  9. MISSOURI DEPARTMENT OF HEALTH & SENIOR SERVICES$2.2M3.2%
    8 awards
  10. SEYER INDUSTRIES, INC.$1.8M2.6%
    60 awards

Other boundaries

District lines change between plans; each plan keeps its own page.

Sources and method

Every figure on this page traces to these records.

  • Congressional district boundaries and relationship files (U.S. Census Bureau)U.S. Census Bureau, Cartographic Boundary Files (congressional districts) and 2020 relationship files · release cd116+cd118+cd119 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Members of Congress, their terms, committees and identifiers (The @unitedstates project (from the Biographical Directory of the U.S. Congress, the House and the Senate))unitedstates/congress-legislators: legislators, committees and current committee membership · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: CC0 1.0 (public domain dedication)
  • ZIP code (ZCTA) to congressional district crosswalk (U.S. Census Bureau)U.S. Census Bureau, 2020 relationship files (ZCTAs, tracts and congressional districts); shares computed by Analisa · release 2020 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov)USAspending.gov, prime award contract transactions (FPDS) · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Money and votes are shown side by side; neither explains the other.