Requirements for getting an Indian visa?

I cannot find the country consulate here in Hawaii. I just want to know if a citizen of the United Sates can acquire one when he/she arrives in the country.

As a holder of a US passport, it is not possible for you to obtain one when you arrive in India. The Consulate of India in San Francisco is servicing Hawaii. Therefore, you should send your request to the visa facilitation services in San Francisco.