Source: http://sol-reform.com/50-state-age-of-majority-v-age-of-consent/
Timestamp: 2019-04-18 19:22:08+00:00

Document:
Arizona 18. Ariz. Rev. Stat. Ann § 8-101 (2014) (“ ‘Child’ means any person under eighteen years of age.”) 18. Ariz. Rev. Stat. Ann. § 13-1405 (2014).
Arkansas 18. Ark. Code Ann. § 9-25-101 (West 1975) 16. Ark. Code Ann. § 5-14-127 (1975).
Iowa 18, unless you are convicted as an adult or married before 18. Iowa Code Ann. § 599.1 (West 1993) 14? See Iowa Code Ann. § 702.5 (West 1993) and Iowa Code Ann. § 709.4 (West 1993).
South Dakota 18 16. S.D. Codified Laws § 22-22-1.

References: § 8
 § 13
 § 9
 § 5
 § 599
 § 702
 § 709
 § 22