I just looked it up on Wikipedia. Looks like it's in California.
Here's the full list of the 42 Presidents by Home State:
Virginia 6
1 George Washington
2 Thomas Jefferson
3 James Madison
4 James Monroe
5 William Harrison
6 John Tyler
Massachusetts 4
1 John Adams
2 John Q. Adams
3 Calvin Coolidge
4 John Kennedy
Tennessee 3
1 Andrew Jackson
2 James Polk
3 Andrew Johnson
New York 6
1 Martin Van Buren
2 Millard Fillmore
3 Chester Arthur
4 Grover Cleveland
5 Theodore Roosevelt
6 Franklin Roosevelt
Louisiana 1
1 Zachary Taylor
New Hampshire 1
1 Franklin Pierce
Pennsylvania
James Buchanan
Illinois 1
1 Abraham Lincoln
Ohio 6
1 Ulysses Grant
2 Rutherford Hayes
3 James Garfield
4 William McKinley
5 William Taft
6 Warren Harding
Indiana 1
1 Benjamin Harrison
New Jersey 1
1 Woodrow Wilson
Iowa 1
1 Herbert Hoover
Missouri 1
1 Missouri
Kansas 1
1 Dwight Eisenhower
Texas 3
1 Lyndon Johnson
2 George Bush
3 George W. Bush
California 2
1 Richard Nixon
2 Ronald Reagan
Michigan 1
1 Gerald Ford
Georgia 1
1 James Carter
Arkansas 1
1 Bill Clinton
That's inconsistent. Wilscon was not born in New Jersey. Eisenhower was not elected from Kansas.
