Illinois Demographics, ZIP Codes and Area Codes
Illinois is the 6th most populated state in the United states, associated with 57 major cities, 102 counties, 13 NPA codes, 1464 standard zip codes, 82 unique zip codes and accommodates 12,757,634 local residents.
Illinois Demographics Summary
| Population | 12,757,634 residents |
| Male Population | 6,313,019 males |
| Female Population | 6,444,615 females |
| Male to Female Ratio | 980 females per 1,000 males |
| Land Area | 55,519 square miles |
| White Population | 8,388,659 |
| Hispanic or Latino Population | 2,275,704 |
| Black Population | 1,774,605 |
| Asian Population | 738,071 |
| Total US Natives or Citizens | 12,757,634 |
| Total Non US Citizens | 845,426 |
| Avg. household income | $108,873 |
| Percapita Income | $43,198 |
| Total Housing units | 12,757,634 |
| Vacant Housing units | 458,596 |
| Total US Natives or Citizens | 331,097,593 |
| Total Non-US Citizens | 21,614,904 |
57 Most Populous Cities in Illinois
The 6th most populous state Illinois is a place for 57 most populous cities (having the population of more than 20000 residents) in the United States.
13 Area Codes Used in Illinois
The 6th most populous state Illinois is associated with 13 area (NPA) codes in the United States for dialing/telecommunication purposes.
- 217 Area Code
- 779 Area Code
- 815 Area Code
- 224 Area Code
- 312 Area Code
- 331 Area Code
- 630 Area Code
- 708 Area Code
- 773 Area Code
- 847 Area Code
- 872 Area Code
- 618 Area Code
- 309 Area Code
NPA Overlay Complex in Illinois
- 224/847
- 312/773/872
- 331/630
- 773/872
- 779/815
- 815/779
102 Counties of Illinois
The 6th most populous state Illinois consists of 102 counties in the United States.
- Adams County, IL
- Alexander County, IL
- Bond County, IL
- Boone County, IL
- Brown County, IL
- Bureau County, IL
- Calhoun County, IL
- Carroll County, IL
- Cass County, IL
- Champaign County, IL
- Christian County, IL
- Clark County, IL
- Clay County, IL
- Clinton County, IL
- Coles County, IL
- Cook County, IL
- Crawford County, IL
- Cumberland County, IL
- DeKalb County, IL
- De Witt County, IL
- Douglas County, IL
- DuPage County, IL
- Edgar County, IL
- Edwards County, IL
- Effingham County, IL
- Fayette County, IL
- Ford County, IL
- Franklin County, IL
- Fulton County, IL
- Gallatin County, IL
- Greene County, IL
- Grundy County, IL
- Hamilton County, IL
- Hancock County, IL
- Hardin County, IL
- Henderson County, IL
- Henry County, IL
- Iroquois County, IL
- Jackson County, IL
- Jasper County, IL
- Jefferson County, IL
- Jersey County, IL
- Jo Daviess County, IL
- Johnson County, IL
- Kane County, IL
- Kankakee County, IL
- Kendall County, IL
- Knox County, IL
- Lake County, IL
- La Salle County, IL
- Lawrence County, IL
- Lee County, IL
- Livingston County, IL
- Logan County, IL
- McDonough County, IL
- McHenry County, IL
- McLean County, IL
- Macon County, IL
- Macoupin County, IL
- Madison County, IL
- Marion County, IL
- Marshall County, IL
- Mason County, IL
- Massac County, IL
- Menard County, IL
- Mercer County, IL
- Monroe County, IL
- Montgomery County, IL
- Morgan County, IL
- Moultrie County, IL
- Ogle County, IL
- Peoria County, IL
- Perry County, IL
- Piatt County, IL
- Pike County, IL
- Pope County, IL
- Pulaski County, IL
- Putnam County, IL
- Randolph County, IL
- Richland County, IL
- Rock Island County, IL
- St. Clair County, IL
- Saline County, IL
- Sangamon County, IL
- Schuyler County, IL
- Scott County, IL
- Shelby County, IL
- Stark County, IL
- Stephenson County, IL
- Tazewell County, IL
- Union County, IL
- Vermilion County, IL
- Wabash County, IL
- Warren County, IL
- Washington County, IL
- Wayne County, IL
- White County, IL
- Whiteside County, IL
- Will County, IL
- Williamson County, IL
- Winnebago County, IL
- Woodford County, IL
Adjacent States to Illinois in USA