An expression asking or indicating an approximate location, time, or range — similar in meaning to 'どのへん'.
駅からどのあたりに住んでいますか？
Around where do you live from the station?
その問題はどのあたりで起きたのですか？詳しく教えてください。
Where roughly did that incident occur? Please tell me the details.
給料はどのあたりが相場ですか？
What is the approximate going rate for the salary?
開花は例年どのあたりですか、桜は早いですか遅いですか？
Around when does it usually bloom — are the cherry blossoms early or late this year?