Lake County, Indiana

|colspan="4" style="text-align:center;border-top:none;"|**Demographics (2020)**|||
| --- | --- | --- | --- |
|**White**|**Black**|**Native**|**Asian**|
|55.2%|24.9%|0.6%|1.5%|
|**Islander**|**Other**|**Mixed**|**Hispanic (any race)**|
|0.0%|7.8%|10.1%|20.0%|
**Lake County** is a county located in the U.S. state of Indiana. In 2020, its population was 498,700, making it Indiana's second-most populous county. The county seat is Crown Point.

This county is part of the Chicago metropolitan area.

## Infobox (settlement)

- **official name**: Lake County, Indiana
- **settlement type**: County (United States), County
- **image skyline**: Lake County Indiana Courthouse.jpg
- **imagesize**: 260px
- **image caption**: Former Lake County Courthouse
in Crown Point, Indiana
- **seal size**: 75px
- **image map**: Map of Indiana highlighting Lake County.svg
- **mapsize**: 130px
- **map caption**: Location in the state of Indiana
- **image map1**: Map of USA IN.svg
- **mapsize1**: 200px
- **map caption1**: Indiana's location in the United States, U.S.
- **subdivision type**: Country
- **subdivision type1**: U.S. state, State
- **subdivision type2**: Region
- **subdivision name2**: Northwest Indiana
- **subdivision type3**: Metro area
- **subdivision name3**: Chicago metropolitan area, Chicago Metropolitan
- **established title**: Settled
- **established date**: October 1834
- **established title1**: Established
- **established date1**: February 16, 1837
- **named for**: Lake Michigan
- **seat type**: County seat
- **seat**: Crown Point, Indiana, Crown Point
- **seat1 type**: Largest city
- **seat1**: Hammond, Indiana, Hammond (population)
Gary, Indiana, Gary (total area)
- **parts type**: Incorporated
municipalities
- **parts**: 19 cities and towns
- **parts style**: coll
- **p1**: Cedar Lake, Indiana, Cedar Lake (town)
- **p2**: Crown Point, Indiana, Crown Point (city)
- **p3**: Dyer, Indiana, Dyer (town)
- **p4**: East Chicago, Indiana, East Chicago (city)
- **p5**: Gary, Indiana, Gary (city)
- **p6**: Griffith, Indiana, Griffith (town)
- **p7**: Hammond, Indiana, Hammond (city)
- **p8**: Highland, Lake County, Indiana, Highland (town)
- **p9**: Hobart, Indiana, Hobart (city)
- **p10**: Lake Station, Indiana, Lake Station (city)
- **p11**: Lowell, Indiana, Lowell (town)
- **p12**: Merrillville, Indiana, Merrillville (town)
- **p13**: Munster, Indiana, Munster (town)
- **p14**: New Chicago, Indiana, New Chicago (town)
- **p15**: Schererville, Indiana, Schererville (town)
- **p16**: Schneider, Indiana, Schneider (town)
- **p17**: St. John, Indiana, St. John (town)
- **p18**: Whiting, Indiana, Whiting (city)
- **p19**: Winfield, Indiana, Winfield (town)
- **unit pref**: US
- **area total sq mi**: 626.5
- **area land sq mi**: 498.9
- **area water sq mi**: 127.6
- **area rank**: List of counties in Indiana, 12th largest county in Indiana
- **length mi**: 36
- **width mi**: 16
- **elevation footnotes**: _(mean)_
- **elevation ft**: 663
- **elevation max footnotes**: _– NE Winfield Twp_
- **elevation min footnotes**: _– at Lake Michigan_
- **elevation max ft**: 801
- **elevation min ft**: 585
- **population total**: 498,700
- **population as of**: 2020 United States Census, **2020**
- **population density sq mi**: 994
- **population rank**: List of counties in Indiana, 2nd largest county in Indiana 131st largest county in U.S.
- **timezone**: Central Standard Time, Central
- **utc offset**: −6
- **timezone dst**: Central Daylight Time, Central
- **utc offset dst**: −5
- **postal code type**: ZIP Codes
- **postal code**: 46303, 46307-08, 46311-12, 46319-25, 46327, 46341-42, 46355-56, 46373, 46375-77, 46394, 46401-11
- **area code type**: North American Numbering Plan, Area code
- **area code**: Area code 219, 219
- **blank name sec1**: Congressional district
- **blank info sec1**: Indiana's 1st congressional district, 1st
- **blank1 name sec1**: Indiana Senate districts
- **blank1 info sec1**: 1st, 2nd, 3rd and 6th
- **blank2 name sec1**: Indiana House of Representatives districts
- **blank2 info sec1**: 1st, 2nd, 3rd, 11th, 12th, 14th, 15th and 19th
- **blank3 name sec1**: Federal Information Processing Standard, FIPS code
- **blank3 info sec1**: 18-089
- **blank4 name sec1**: Geographic Names Information System, GNIS feature ID
- **blank4 info sec1**: 0450495
- **blank name sec2**: Interstate Highway, Interstates
- **blank info sec2**:
---
- **blank1 name sec2**: U.S. Routes
- **blank1 info sec2**:
---
- **blank2 name sec2**: State highway, State Routes
- **blank2 info sec2**:

---
- **blank3 name sec2**: Airports
- **blank3 info sec2**: Gary/Chicago International Airport, Gary/Chicago International
Griffith-Merrillville Airport, Griffith-Merrillville
---
- **blank4 name sec2**: Waterways
- **blank4 info sec2**: Grand Calumet River

Kankakee River
Lake Michigan
---
- **blank5 name sec2**: Amtrak stations
- **blank5 info sec2**: Dyer (Amtrak station), Dyer – Hammond–Whiting (Amtrak station), Hammond-Whiting
---
- **blank6 name sec2**: South Shore Line stations
- **blank6 info sec2**: Hammond (NICTD station), Hammond – East Chicago (NICTD station), East Chicago
Adam Benjamin Metro Center
Gary Airport (NICTD station), Gary/Chicago Airport – Miller (NICTD station), Miller
---
- **blank7 name sec2**: Public transit
- **blank7 info sec2**: East Chicago Transit
Gary Public Transportation Corporation, Gary Public Transportation
_Broadway Metro Express_
- **website**: [http://www.lakecountyin.org/ www.lakecountyin.org]
- **footnotes**: * Indiana county number 45
* Second most-populous county in Indiana