99chambers

Iowa House of Representatives seat · lines in effect since 2022

Iowa House District 38

A district of about 29,000 people, 18% of adults with a bachelor's degree. It votes R+23.2 relative to the nation for president.

VacantNext election Nov 7, 2028The 2026 race →

Where it sits among all 100 seats

Every Iowa House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

R+23.261st most
Democratic
Most DemocraticMost Republican51st seat · the majority lineDistrict 38

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

202220242026
Iowa House of RepresentativesR+20.7R+11.5R+4.1

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: Iowa Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 100 seats. Small marks are other seats in Iowa. The black marker is District 38.

Adults with a bachelor's degree18% 7th pct · 93rd of 100 in IA

Lower than 93% of seats.

White adults without a degree74% 94th pct · 7th of 100 in IA

Higher than 94% of seats.

Hispanic residents4% 30th pct · 70th of 100 in IA

Lower than 70% of seats.

Black residents2% 46th pct · 54th of 100 in IA

Lower than 54% of seats.

Asian residents1% 21st pct · 79th of 100 in IA

Lower than 79% of seats.

People per square mile52 40th pct · 60th of 100 in IA

Less dense than 60% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Seats most like this one

Nearest seats on demographics, density and lean.

District 100
22% college gradsR+25.3Held RDistrict 68
21% college gradsR+28.9Held RDistrict 66
21% college gradsR+30.2Held RDistrict 58
21% college gradsR+31.9Held R

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Who has held it

These lines took effect in 2022.

  1. Matthew Oleson (R)
    2027– · Won 2026 by 4.1
  2. Jon Dunwell (R)
    2023–2027 · Won 2022 by 20.7, 2024 by 11.5

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)