亞厄懷勒縣北面同北萊茵－西法倫州嘅哀士噱軒縣、萊茵-肆役-縣、波恩市相鄰，東面接新樾縣，南面接邁恩-可勃倫茨縣，西南面接闊勤埃佛縣。
The county of Aeuwyl is bordered to the north by the counties of Eishihxuan, Rhine-Ran-Gang and Bonn in North Rhine-West Phalon, to the east by Xinyue County, to the south by Main-Kobrenz County, and to the southwest by Koqin Ever.