Deductions & credits

It will show in the State and Local taxes section of Schedule A, Form 1040. To put it there
click on
Federal (Personal using Home and Business)
then on
Deductions and Credits
choose "I'll choose what I work on"
scroll down to
Estimates and Other Taxes Paid
click start or update on the Other Income Taxes line
scroll all the way down to
Other Income Taxes paid in 2014