If you have changed your location and that's why you don't receive your bill then it's your fault. As it's the property owner's responsibility to inform the County office about his new location. But if it became late by chance then you should contact the Collector's office at 434-296-5851 as soon as possible to minimize penalty and interest.
The first installment is due by June 5th and the second installment is due by December 5th. After these due dates, your taxes will become delinquent. A penalty of 10% or $10 whichever will be greater plus 10% interest per year accrues each month will be added to your tax bill until you pay.
You can ask any questions related to this service here. We will try to answer them soon!