Missouri State House District 21
Competitive — shifted 17.4pp toward Republicans in 2024 — 39K residents
Missouri State House District 21 is a state house district that has a population of 38,792. In the 2024 presidential election, it voted Republican with a margin of R+4.5. Akashic Edge tracks 5 presidential elections here, dating back to 2008.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 46.9% | 51.4% | R+4.5 | R+17.4 |
| 2020* | 55.3% | 42.4% | D+13.0 | D+18.1 |
| 2016* | 43.7% | 48.9% | R+5.2 | R+12.9 |
| 2012* | 53.9% | 46.1% | D+7.7 | R+5.3 |
| 2008* | 55.4% | 42.4% | D+13.0 | — |
* Pre-2022 results projected onto current district boundaries. Actual boundaries at the time of the election may have differed.
What defines MO-HD-21?
MO-HD-21 has flipped between parties in each of the last three elections — a fiercely contested battleground. It has a working-class electorate (0% college-educated) — a demographic increasingly aligned with Republicans nationwide.
Similar state house districts
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Key Insights
- Swung 17.4 points toward Republican between 2020 and 2024
- Won by both parties in recent history — Democrats most recently in 2020, Republicans in 2024
- Turnout decreased by 63.6 percentage points since the previous presidential election
Who Lives Here
| Group | MO-HD-21 | State | National |
|---|---|---|---|
White (Non-Hispanic) | 66.6% | 76.3% | 57.4% |
Hispanic / Latino | 14.8% | 5.2% | 19.3% |
Black / African American | 9.1% | 11.0% | 12.2% |
Multiracial / Other | 7.2% | 4.9% | 4.0% |
Native American / Alaska Native | 0.9% | 0.3% | 0.9% |
Asian | 0.9% | 2.1% | 6.0% |
Native Hawaiian / Pacific Islander | 0.6% | 0.1% | 0.2% |
Who lives in Missouri State House District 21? 38,792 residents as of the 2020 Census.
Demographics
Scale, voting-age share, and this geography's footprint inside the national electorate.
Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.
Age structure, language use, and nativity signals that explain how this geography differs from state and nation.
Turnout in MO-HD-21
How competitive is MO-HD-21?
Other Missouri State House Districts
162 total| Name | Margin ↓ |
|---|---|
| MO-HD-85 | D+83.8 |
| MO-HD-79 | D+79.2 |
| MO-HD-77 | D+78.6 |
| MO-HD-76 | D+78.4 |
| MO-HD-78 | D+74.6 |
| MO-HD-66 | D+74.2 |
| MO-HD-84 | D+73.1 |
| MO-HD-27 | D+71.9 |
| MO-HD-67 | D+70.2 |
| MO-HD-24 | D+68.0 |
| MO-HD-23 | D+67.6 |
| MO-HD-74 | D+66.3 |
| MO-HD-80 | D+65.8 |
| MO-HD-86 | D+65.8 |
| MO-HD-26 | D+63.4 |
| MO-HD-73 | D+61.4 |
| MO-HD-25 | D+56.1 |
| MO-HD-75 | D+50.9 |
| MO-HD-68 | D+49.0 |
| MO-HD-22 | D+48.6 |
| MO-HD-19 | D+45.9 |
| MO-HD-45 | D+44.8 |
| MO-HD-81 | D+44.1 |
| MO-HD-91 | D+42.2 |
| MO-HD-82 | D+41.6 |