State Rep. Mark Boyko
State Representative · Missouri State House of Representatives · Democrat
State Representative for Missouri, District 90.
Phone
Capitol office
Missouri State House of Representatives
Room 101-K, 201 W. Capitol Ave.
Jefferson City, MO 65101
Room 101-K, 201 W. Capitol Ave.
Jefferson City, MO 65101
Email
Online
The official office email, as the state publishes it.
Committees
House of RepresentativesElementary and Secondary Education
House of RepresentativesGovernment Efficiency
JointLegislative Research
House of RepresentativesPensionsRanking Member
House of RepresentativesProperty Tax Reform Special
House of RepresentativesUtilities
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Source: Open States (public domain), from the official state websites. Last checked October 29, 2026. Official website ↗