it all depends on how many people lived in your household

Only one couple, that's it.

Poverty Line for the 48 Contiguous States plus D.C. Size of Family Unit Guideline 1 $12,880 2 $17,420 3 $21,960 4 $26,500 5 $31,040 6 $35,580 7 $40,120 8 $44,660

if u petition for someone they include u plus that person

What I understood based on this information for four people, including (me & my spouse) the total income should be 33,125 before tax, is that right?

yes

Thank you & also do you know what would be the household size? For four people? Do they have such requirements?

There is no size requirement. But you will have to count all the individuals you support. Example if you have 2 kids then that means the requirement is You + Spouse + 2 kids + 2 parents (you are filing for); so total of 6 will be the income requirement

thanks, everyone for your inputs