A lot of people hit a roadblock with the India visa application before they can even get it going!
On the first page of the online application, the very first question will be "Country you are applying visa from". If you selected 'India', you're not alone. This first question is asking which country you are in when you apply for the India visa.
You will need to be sure to select 'United States of America' here in order to have the US Missions listed on the next question.
In order to determine which mission your visa will be applied through, please visit our India Consulate Jurisdictions page and find your state on the list.