The highest annual increase in NIAAA membership numbers for 2017-18 was led by the Ohio IAAA, with a gain of 117 members over the last year. The top twelve in order included:
- Ohio IAAA --- 117
- Tennessee IAAA --- 87
- Iowa HSADA --- 70
- North Carolina IAA --- 43
- Maryland SADA --- 38
- Colorado ADA --- 36
- Virginia IAAA --- 31
- Arizona IAAA & Idaho AAA --- 30
- Florida IAAA, Mississippi AAA & South Carolina --- 27
