district residence website state_senate succeeded children imagesize party preceded state_house birth_date term_start spouse image article_title term_end name alma_mater
12th 23rd imogene , iowa -lsb- https://www.legis.iowa.gov/legislators/legislator?ga=86&amp;personid=10749 costello 's website -rsb- iowa david sieck 4 children 150px republican joni ernst dan rasmussen iowa 24 october 1961 december 30 , 2014 january 14 , 2013 rachel mark costello - official portrait - 85th ga.jpg mark costello -lrb- iowa politician -rrb-
 december 30 , 2014 mark costello university of northern iowa
mark costello -lrb- iowa politician -rrb-

mark costello is the iowa state senator from the 12th district .
he previously served as an iowa state representative in the 23rd district .
a republican , he served in the iowa house of representatives from 2013-2014 and the iowa state senate since 2015 .
costello resides in imogene , iowa .
he has a b.a. in computer information systems from the university of northern iowa .
