What is my bank routing number my bank is on 19th st in the city of costa mesa?

Your routing number should be listed on your check.

Routing numbers are on the bottom left corner of the check. Or you could call the bank and they will tell ya.

Your bank routing numbers are the numbers listed on the bottom of your checks.

The routing number is on your checks it is in the lower left corner along with your checking account number

Simply call your bank and ask. Or if you use on-line banking, sign in and have a look at your account information.

if you have check's .
on the left hand side ,you have your routing #'s and checking account # .
left hand your routing . right hand just before your signature your checking #

It's the number right in front of your acct number on the checks you use....NOT on deposit slips!!

It is either:

121000358

or

122000661

See source for details.

Hope this helps!