A profile of Illinois, latest battleground in the race for the Republican presidential nomination:

NUMBERS

Population: 12,869,257

AGE

Median age: 35.7

Percentage of population 65 and over: 12.5 percent

RACE

63.7 percent non-Hispanic white, 14.5 percent black, 4.6 percent Asian, 15.8 percent Hispanic or Latino origin

LANGUAGE

Language other than English spoken at home: 21.7 percent

EDUCATION

High school graduate: 86.2 percent

Bachelor's degree or higher: 30.3 percent

MONEY:

Median household income: $55,735

Persons below poverty level: 12.6 percent

Homeownership rate: 69.2 percent

2008 PRESIDENTIAL RESULTS

_General: Barack Obama, 61.9 percent; John McCain, 36.8 percent

_Democratic primary: Barack Obama, 64.7 percent; Hillary Clinton, 32.8 percent; John Edwards, 1.9 percent

_Republican primary: John McCain, 47.5 percent; Mitt Romney, 28.6 percent; Mike Huckabee, 16.5 percent

VOTES CAST BY PARTY, 2008

Republican, 899,422

Democratic, 2,038,614

ILLINOIS QUICK FACTS

_Illinois' Latino population grew by 32 percent between 2000 and 2010.

_Illinois has the highest high-school dropout rate in the nation.

_Two of its previous governors are now in federal prison.

_McLean County in central Illinois is the country's No. 1 producer of soybeans. North-central LaSalle County ranks first nationally in corn.

_Illinois has just under 7,000 units of local government, such as school districts, townships and cities. That's far more than any other state.