Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/IL/COUNTY/LAKE

Lake County, IL ZIP codes

There are 32 ZIP codes in Lake County, IL, in 29 towns, from 60002 to 60099. The largest are 60085 (Waukegan), 60073 (Round Lake) and 60089 (Buffalo Grove). 1 more crosses into it from a neighbouring county: 60010.

The county seat is Waukegan.

ZIP codes
32
Partly in it
1 more
Towns
29
County seat
Waukegan
County FIPS
17097
Population
714,223
Median household income
$110,416
Land area
444 sq mi
Area codes
224, 847

Lake County ZIP codes by town

Waukegan (county seat)
60079, 60085, 60087

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Lake County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Lake County.

Map of Lake County ZIP codes

6000260011600156002060030600316003560037600406004160042600446004560046600476004860060600616006460069600736007560079600836008460085600866008760088600896009660099

The ZIP codes of Lake County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Lake County in numbers

About 714,223 people live in Lake County, in 258,455 households, the 3rd most populous of Illinois's 102 counties. The median household income is $110,416 a year, 32% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $345,700 (31% above the Illinois median), and median gross rent is $1,477 a month. The median age is 39.1; 47.7% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 29 minutes.

Population714,223Lake714,223
Households258,455Lake258,455
Median age39.1Lake39.1Illinois39.0US 38.9
Median household income$110,416Lake$110,416Illinois$83,390US $80,734
Median home value$345,700Lake$345,700Illinois$263,300US $332,700
Median gross rent$1,477Lake$1,477Illinois$1,274US $1,413
Bachelor's degree or higher47.7%Lake47.7%Illinois37.8%US 35.7%
Mean commute28.5 minLake28.5 minIllinois27.8 minUS 26.4 min
Population density1,610 / sq miLake1,610 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Lake County

Largest towns in Lake County
TownZIP codesPopulation
Waukegan 3 89,076
Buffalo Grove 1 42,891
Mundelein 1 31,915
North Chicago 2 30,643
Gurnee 1 30,510
Highland Park 1 30,398
Vernon Hills 1 26,876
Zion 1 24,600
Grayslake 1 20,929
Libertyville 1 20,525
Lake Zurich 1 19,832
Deerfield 1 19,518
Lake Forest 1 19,416
Round Lake 1 18,628
Antioch 1 14,859

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Lake County.

Not sure you are in Lake County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Lake County, with figures

ZIP codes in Lake County
ZIP City Type Population Median income Median home
60002 Antioch , IL Standard 24,232 $104,981 $301,900
60011 Barrington , IL No street area — — —
60015 Deerfield , IL Standard 28,096 $183,125 $606,000
60020 Fox Lake , IL Standard 10,970 $73,949 $226,200
60030 Grayslake , IL Standard 35,792 $104,795 $292,400
60031 Gurnee , IL Standard 37,107 $111,034 $335,100
60035 Highland Park , IL Standard 30,398 $168,094 $607,300
60037 Fort Sheridan , IL No street area — — —
60040 Highwood , IL Standard 5,301 $107,875 $405,400
60041 Ingleside , IL Standard 9,024 $93,396 $245,300
60042 Island Lake , IL Standard 8,347 $99,917 $259,100
60044 Lake Bluff , IL Standard 10,312 $134,724 $599,900
60045 Lake Forest , IL Standard 21,074 $233,125 $923,500
60046 Lake Villa , IL Standard 34,613 $126,042 $308,100
60047 Lake Zurich , IL Standard 44,240 $176,081 $541,300
60048 Libertyville , IL Standard 29,124 $173,975 $551,200
60060 Mundelein , IL Standard 37,344 $110,335 $326,700
60061 Vernon Hills , IL Standard 27,974 $124,468 $416,700
60064 North Chicago , IL Standard 14,884 $49,195 $152,200
60069 Lincolnshire , IL Standard 8,502 $162,826 $611,900
60073 Round Lake , IL Standard 62,868 $98,514 $231,200
60075 Russell , IL Standard 129 — —
60079 Waukegan , IL No street area — — —
60083 Wadsworth , IL Standard 9,981 $123,125 $323,200
60084 Wauconda , IL Standard 17,192 $110,090 $303,200
60085 Waukegan , IL Standard 72,341 $66,793 $177,400
60086 North Chicago , IL No street area — — —
60087 Waukegan , IL Standard 27,293 $76,738 $206,600
60088 Great Lakes , IL Standard 14,400 $66,008 —
60089 Buffalo Grove , IL Standard 42,872 $129,401 $412,200
60096 Winthrop Harbor , IL Standard 6,527 $95,601 $249,100
60099 Zion , IL Standard 30,881 $66,109 $196,700

Cite this page

zipcodes.pro. “Lake County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/il/county/lake

Underlying data is public domain or openly licensed — sources, vintages and licences.