Hero MotoCorp Ltd. sold 553,963 units in June, up 10% on year, driven by steady demand across both urban and rural markets, the company said in an exchange filing Tuesday.Domestic sales rose to 525,136 units from 491,416 units a year ago, while exports jumped to 28,827 units from 12,032 units. Motorcycle sales grew over 8% on year to 512,658 units and scooter volumes surged nearly 37% to 41,305 units.