In 2018, 31 is the most common age for an American (U.S.) Amity who is registered female with the Social Security Administration. It is the 6685th most common female first name for living U.S. citizens.
― Anonymous User 10/22/2018
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The name Amity was given to 37 girls born in the US in 2015.
Amity is also a word in the English language meaning Friendship (as stated in the names page) but the word itself was used by Veronica Roth in the "Divergent" novels as the faction that values kindness. The main characters take refuge in that faction at the beginning of the second book in the main trilogy "Insurgent".