The answer depends on lot of things eg- mortgage program there are about 400 different kind, your credit score( what interest rate you qualify for), downpayment etc. Most mortgage broker will let you know for free. But lets say you are putting 20% down and getting 6% 30 yrs fixed you will be paying about 2000 mortgage plus interest.
This is very rough. You can actually visit www.essexhomesnj.com and click on calculator to know it yourself.