Officials
Mark Costello
Mark Costello holds the office of State Senator in State Senate District 8, Iowa, on the roster read 2026-09-01. This page is what Rallybase holds about that office and where each part of it was read from.
- Office
- State Senator
- Body
- State Senate District 8
- State
- Iowa
- Party, as recorded
- Republican
- Phone
- 515-281-3371
- mark.costello@legis.iowa.gov
- Website
- https://www.iowasenaterepublicans.com/senators/mark-costello/
- Mailing address
- 1007 E. Grand Ave., Des Moines, IA 50319
- Read on
Where this seat sits, and what you can do
- State Senate District 8The district this seat represents
- Write to Mark CostelloRallybase composes the letter; sending it yourself is free
What Rallybase does not know here
- When this term ends. The sources we sync do not publish it and we store none.
- How this person has voted. We hold recorded votes for some chambers and none that this person appears in.
- Committee assignments, office hours, and anything this person has said. We hold none of it.