Family based green card to Citizenship

[sub shah]

Hi

can any one give details on the following ..

1) how long it takes to apply for citizenship from the date of entry assuming did not leave the us or no breaks of 2 months

2) is there any income to be showed and if so what should be the minimum income 

pl clarify on the above.

thanks

[pontevecchio]

https://www.dhs.gov/external/guide-naturalization-uscis

[sub shah]

Thanks

is there any minimum income to be maintained ?