Missouri's 3rd congressional district (MO-03)
Missouri's 3rd congressional district (MO-03) covers parts or all of 16 counties, including Callaway County, Cole County, Cooper County, Crawford County, Gasconade County and Maries County, and 143 ZIP codes (72 wholly inside it). Its 2020 population was 769,364. This is the map in force for the November 3, 2026 election.
Who represents MO-03
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (MO-03) | Robert F. Onder, Jr. (R) | 202-225-2956 |
| U.S. Senator | Eric Schmitt (R) | 202-224-5721 · contact form |
| U.S. Senator | Josh Hawley (R) | 202-224-6154 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in MO-03 |
|---|---|
| Callaway County | 100% |
| Cole County | 100% |
| Cooper County | 100% |
| Crawford County | 100% |
| Gasconade County | 100% |
| Maries County | 100% |
| Miller County | 100% |
| Moniteau County | 100% |
| Montgomery County | 100% |
| Osage County | 100% |
| Washington County | 100% |
| St. Charles County | 74% |
| Boone County | 56% |
| Warren County | 34% |
| Jefferson County | 30% |
| Camden County | 28% |
ZIP codes
Percentages mark ZIPs only partly in MO-03: the share of that ZIP's residents inside it.
- 63012 (0.3%)
- 63014 (6.5%)
- 63015 (24%)
- 63016
- 63020 (60%)
- 63023
- 63025 (22%)
- 63028 (1.6%)
- 63030
- 63037 (0.5%)
- 63041 (20%)
- 63049 (58%)
- 63050 (82%)
- 63051 (87%)
- 63068 (2.6%)
- 63069 (14%)
- 63071
- 63072 (6.3%)
- 63080 (25%)
- 63091 (88%)
- 63301
- 63303
- 63304 (96%)
- 63333 (99%)
- 63348 (73%)
- 63349 (1.6%)
- 63350
- 63351 (78%)
- 63359 (46%)
- 63361
- 63363 (94%)
- 63366 (70%)
- 63367 (38%)
- 63368 (11%)
- 63373
- 63376 (96%)
- 63381 (59%)
- 63383 (33%)
- 63384 (95%)
- 63385 (61%)
- 63386
- 63388
- 63390 (40%)
- 63622
- 63624 (17%)
- 63626 (90%)
- 63628 (2.1%)
- 63630 (99%)
- 63631 (87%)
- 63648 (89%)
- 63660
- 63664
- 63674
- 65001
- 65010
- 65011 (6.4%)
- 65013
- 65014
- 65016
- 65017 (99%)
- 65018
- 65023
- 65024
- 65025
- 65026 (100%)
- 65032
- 65034 (44%)
- 65035
- 65039
- 65040
- 65041 (98%)
- 65043
- 65046
- 65047 (87%)
- 65048
- 65049
- 65050
- 65051
- 65053
- 65054
- 65058
- 65059
- 65061
- 65062
- 65063
- 65064
- 65065 (78%)
- 65066
- 65067
- 65068
- 65069
- 65072 (22%)
- 65074
- 65075
- 65076
- 65077
- 65079 (47%)
- 65080
- 65081 (95%)
- 65082
- 65083
- 65084 (0.9%)
- 65085
- 65101
- 65109
- 65201 (87%)
- 65202 (2.8%)
- 65203 (84%)
- 65215 (<0.1%)
- 65231 (99%)
- 65233
- 65237
- 65240 (0.7%)
- 65251
- 65262
- 65264 (21%)
- 65276
- 65279 (52%)
- 65287
- 65301 (0.1%)
- 65322
- 65347 (7.1%)
- 65348 (77%)
- 65350 (0.5%)
- 65354 (12%)
- 65401 (0.8%)
- 65441 (100%)
- 65443
- 65446
- 65449 (86%)
- 65452 (3.2%)
- 65453
- 65456
- 65459 (26%)
- 65486
- 65535
- 65559 (7.6%)
- 65560 (1.9%)
- 65565 (99%)
- 65566 (4.9%)
- 65580
- 65582
- 65586
Towns
Auxvasse township, Bear Creek township, Belgrade township, Bellevue township, Benton township, Benton township, Big River township, Blackwater township, Boeuf township, Boone township, Boone township, Boonville township, Boulware township, Bourbois township, Bourbon township, Breton township, Brush Creek township, Burris Fork township, Caldwell township, Calwood township, Camp Branch township, Canaan township, Cedar township, Cedar township, Clark Fork township, Clark township, Clay township, Clear Creek township, Cleveland township, Concord township, Cote Sans Dessein township, Courtois township, Crawford township, Danville township, Dry Creek township, East Fulton township, Equality township, Franklin township, Frontier township and Glaze township and others.
Get this in your AI agent
Your agent can draw every precinct in MO-03, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:2903", children_level="precinct", include_districts=True)