Illinois ZIP Codes

Illinois ZIP code list — 1,285 ZIP codes across 102 counties and 1,068 cities. Search by city or filter by county.

1,285

ZIP codes

102

counties

1,068

cities

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About Illinois ZIP codes

Illinois is home to 1,285 ZIP codes that cover 102 counties and over 1,068 cities and communities, ranging from the bustling streets of Chicago to the farmlands of central and southern Illinois. ZIP codes in the state span from 60002 in the far northeastern suburbs to 62999 in the southern and western regions, using prefixes from 600 through 629. Cook County alone accounts for 183 of those ZIP codes, reflecting the enormous population density of the greater Chicago area. Whether you're looking up a ZIP code for a major metropolitan hub or a small rural town, Illinois offers a rich and well-organized postal landscape that mirrors the state's diverse geography.

Illinois ZIP codes begin with prefixes ranging from 600 to 629, reflecting a geographic distribution that generally moves from the northeastern part of the state to the southern and western regions. The 606 prefix is closely associated with the city of Chicago, while prefixes like 600–605 and 607–609 cover the surrounding suburban areas of northeastern Illinois. Higher prefixes such as 618–629 serve central and southern Illinois, including cities like Springfield, Carbondale, and East St. Louis.

Cook County leads Illinois with 183 ZIP codes, which is not surprising given that it encompasses the city of Chicago and many of its densely populated surrounding suburbs, making it the most populous county in the state and the second most populous in the entire United States.

Quick facts

Illinois was at the heart of the modern ZIP code system's rollout in 1963, and Chicago's central post office was one of the busiest mail-processing hubs in the country, handling millions of pieces of mail daily.
The ZIP code 60601 belongs to downtown Chicago's Loop district, one of the most iconic and commercially significant postal zones in the United States.
Illinois has no ZIP codes beginning with 621, creating a small but notable gap in its otherwise continuous sequence of prefixes from 600 to 629.

Frequently asked questions

What ZIP codes are in Chicago, Illinois?

Chicago uses a large number of ZIP codes, most of which fall under the 606 prefix. They range from 60601 in the downtown Loop area through 60661 and beyond, covering neighborhoods such as Lincoln Park (60614), Hyde Park (60637), Wicker Park (60622), and many more. In total, Chicago has over 60 unique ZIP codes serving its diverse neighborhoods.

How many ZIP codes does Illinois have?

Illinois has a total of 1,285 ZIP codes, spanning 102 counties and serving approximately 1,068 cities and communities across the state. This makes Illinois one of the states with the highest number of ZIP codes in the country.

What do Illinois ZIP codes start with?

Illinois ZIP codes start with the digits 60 through 62, using 29 distinct three-digit prefixes ranging from 600 to 629. The lower prefixes (600–609) generally cover the Chicago metropolitan area and northeastern Illinois, while the higher prefixes (610–629) serve central, western, and southern parts of the state.

Which county in Illinois has the most ZIP codes?

Cook County has the most ZIP codes in Illinois with 183, far exceeding the next closest counties. Sangamon County, home to the state capital of Springfield, comes in second with 48 ZIP codes, followed by DuPage County with 45. Cook County's dominance reflects its massive population and geographic expanse as the home of Chicago and dozens of surrounding suburbs.

Looking for a downloadable Illinois ZIP code list? Our Gold Edition database includes all 1,285 IL ZIP codes with city, county, latitude, longitude, timezone, and FIPS codes — available in Excel, CSV, and Access formats.

Last updated April 2026

Demographics & statistics

12,714,933

Population

39.1

Median age

$84,063

Median household income

$43,240

Per capita income

$179,062

Median home value

$883

Median monthly rent

77.4%

Home ownership

11.2%

Poverty rate

5.3%

Unemployment

3,755,923

Housing units

25.9%

Bachelor's or higher

Age distribution

Male Female

364,603

Under 5

354,241

386,485

5–9

375,501

418,154

10–14

406,270

428,918

15–19

416,728

429,487

20–24

417,280

877,464

25–34

852,526

846,453

35–44

822,397

812,942

45–54

789,838

428,576

55–59

416,395

409,659

60–64

398,017

612,475

65–74

595,069

301,222

75–84

292,661

132,671

85+

128,901

← Male

Female →

Age summary

Group	Count	%
Under 18	2,811,656	21.8%
18 and over	9,903,277	78.2%
65 and over	2,062,999	19.3%
Median age	39.1 years

Race & ethnicity

White 58.9%

Black or African American 12.5%

Hispanic or Latino 10.4%

Two or more races 6.7%

Other race 5.9%

Asian 5.2%

American Indian / Alaska Native 0.4%

Group	Count	%
White	8,351,440	58.9%
Black or African American	1,772,053	12.5%
Hispanic or Latino	1,474,222	10.4%
Two or more races	950,694	6.7%
Other race	841,714	5.9%
Asian	737,776	5.2%
American Indian / Alaska Native	55,789	0.4%

Household income

Under $10k 4.5%

$10k–$15k 3.5%

$15k–$25k 7.3%

$25k–$35k 7.8%

$35k–$50k 11.3%

$50k–$75k 17.2%

$75k–$100k 14.0%

$100k–$150k 18.4%

$150k–$200k 8.1%

$200k+ 7.8%

Range	% of households
Under $10k	4.5%
$10k–$15k	3.5%
$15k–$25k	7.3%
$25k–$35k	7.8%
$35k–$50k	11.3%
$50k–$75k	17.2%
$75k–$100k	14.0%
$100k–$150k	18.4%
$150k–$200k	8.1%
$200k+	7.8%
Median income	$84,063

Housing

Home values

Under $50k 10.6%

$50k–$100k 20.0%

$100k–$150k 16.7%

$150k–$200k 14.1%

$200k–$300k 18.6%

$300k–$500k 13.7%

$500k–$1M 5.0%

$1M+ 1.3%

Housing overview

Metric	Value
Median home value	$179,062
Median rent / month	$883
Owner occupied	77.4%
Renter occupied	22.5%
Vacant	11.3%
Single-family detached	76.6%
Large apartment buildings	4.2%
Mobile homes	6.3%
Median rooms	6.0
Avg household size (owned)	2.55

Year built

Era	%
2020 or later	0.2%
2010–2019	4.1%
2000–2009	10.4%
1990–1999	11.2%
1980–1989	8.7%
1970–1979	15.1%
1960–1969	10.1%
1950–1959	10.6%
1940–1949	5.9%
1939 or earlier	23.7%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	7.1%
2 bedrooms	26.0%
3 bedrooms	44.1%
4 bedrooms	16.7%
5+ bedrooms	4.5%

Vehicles per household

Vehicles	% of households
No vehicle	6.0%
1 vehicle	28.3%
2 vehicles	39.2%
3 or more	26.5%

Heating fuel

Fuel type	%
Utility gas	58.5%
Electricity	20.1%
Propane / LP gas	17.8%
Fuel oil	0.3%
Wood	1.9%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	2,294,204	52.1%
Cohabiting couple	327,798	6.7%
Male householder, no spouse	927,519	17.9%
Female householder, no spouse	1,402,931	23.3%
Households with children under 18	1,459,076	28.8%
Households with seniors (65+)	1,480,691	33.6%
Average household size	2.50

Marital status

Status	Male	Female
Never married	31.5%	25.2%
Married	53.4%	52.3%
Separated	1.2%	1.4%
Widowed	3.3%	9.7%
Divorced	10.5%	11.3%

Education

Less than 9th grade 2.9%

Some HS, no diploma 5.6%

HS graduate 33.0%

Some college, no degree 21.9%

Associate's degree 10.6%

Bachelor's degree 16.5%

Graduate / professional 9.4%

Metric	%
HS diploma or higher	91.4%
Bachelor's or higher	25.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	199,997	7.3%
Kindergarten	149,074	5.2%
Elementary school	1,247,112	43.4%
High school	680,771	23.8%
College / grad school	828,973	19.7%

Employment

Industry of employment

Education & healthcare 23.0%

Manufacturing 13.0%

Retail trade 11.1%

Professional & management 8.2%

Transportation & utilities 7.1%

Construction 6.9%

Arts, food & hospitality 6.7%

Finance & real estate 5.8%

Other services 4.6%

Agriculture & mining 4.6%

Public administration 4.4%

Wholesale trade 3.1%

Information 1.3%

Occupation

Category	%
Management, business & arts	35.4%
Service	16.1%
Sales & office	19.7%
Natural resources & construction	10.9%
Production & transportation	17.7%

Employment type

Type	%
Private sector	79.2%
Government	14.0%
Self-employed	6.4%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	78.2%
Carpool	7.4%
Public transit	2.1%
Walk	2.2%
Other means	1.2%
Avg commute (minutes)	26.9

Poverty

All people 11.2%

Under 18 years 14.8%

18 and over 10.1%

Married-couple families 4.1%

Female-led households 22.1%

Income support

Source	% of households
Social Security	34.7%
Retirement income	26.7%
Supplemental Security	4.5%
Cash public assistance	2.3%
Food stamps / SNAP	11.7%

Health indicators

Condition	%
High blood pressure	33.2%
High cholesterol	33.0%
Heart disease	6.5%
Stroke	3.1%
Asthma	9.7%
Arthritis	26.4%
Kidney disease	2.9%
Pulmonary disease	7.1%
Cancer	6.9%

Behavior / access	%
Binge drinking	15.0%
No physical activity	24.8%
Less than 7 hrs sleep	32.3%
Fair or poor health	14.4%
Poor mental health	12.7%
Poor physical health	9.9%
No health insurance	11.0%
Visited doctor (checkup)	76.7%
Visited dentist	64.4%
Cholesterol screening	89.8%
Teeth loss	14.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	515,826	7.5%

Disability	%
Any disability	14.1%
Under 18	4.4%
18–64 years	11.5%
65 and over	33.4%

Health insurance coverage

Type	%
Private insurance	70.5%
Public insurance	37.9%
Uninsured under 19	3.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	11,996,089	94.5%
Spanish	1,030,079	3.2%
Other Indo-European	620,093	1.8%
Asian & Pacific Islander	224,234	0.8%
Other languages	145,278	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,911,379	94.6%
Born in same state	10,752,247	93.9%
Born in different state	8,515,323	75.4%
Foreign born	159,132	0.7%
Naturalized citizen	1,803,554	5.4%
Not a US citizen	958,818	47.1%

Ancestry

Ancestry	Count	%
Italian	1,365,941	10.7%
French	805,731	6.3%
Arab	435,954	3.4%
Polish	136,916	1.1%
English	132,160	1%

Ancestry	Count	%
Norwegian	72,142	0.6%
Irish	41,323	0.3%
Dutch	40,147	0.3%
German	29,750	0.2%

Technology access

Metric	% of households
Computer access	40.0%
Internet access	91.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.