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US ZIP Code Profile

ZIP Code 46312
East Chicago, Indiana

ZIP code 46312 is in East Chicago, located in Lake County, Indiana, within the Chicago-Naperville-Elgin metro area. Its 2020 Census population was 26,370. The estimated median adjusted gross income per tax return is $28,937, and about 1% of filers report $200,000 or more.

2020 Population
26,370
Census ZCTA
County
Lake
FIPS 18089
Median income (est.)
$28,937
IRS SOI 2022
Land Area
14.014 mi²
+ 0.266 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityEast Chicago, IN
CountyLake County (FIPS 18089)
StateIndiana (FIPS 18)
Metro Area (MSA)Chicago-Naperville-Elgin, IL-IN-WI Metro Area (16980)
Census Region / DivisionMidwest Region · East North Central Division
Coordinates41.646954, -87.45398
Land / Water Area14.014 mi² land · 0.266 mi² water

02Income & Economics

Distribution of the 9,670 individual tax returns filed in 46312 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
45.0%
$25K–$50K
31.9%
$50K–$75K
11.9%
$75K–$100K
5.6%
$100K–$200K
5.2%
$200K+
0.5%
The $200,000+ bracket accounts for 4% of 46312's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($28,937) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 46312's IRS income metrics, 2020–2022.

Median income (2021→2022)
$28,937
▲ 12.4%
Filers earning $200K+
0.5%
▲ 0.1 pt
Total filers
9,670
▼ 2.1%
GET /zipc/v2/zipcodes/46312/soi?year=… $24K 2020 $26K 2021 $29K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 46312 ZCTA.

2000
32,385
 
2010
29,698
▼ -8.3%
2020
26,370
▼ -11.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 46312. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 46312

East Chicago and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 46312 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number172409
City AliasesEast Chicago

07Frequently Asked Questions

What county is ZIP code 46312 in?

ZIP code 46312 is in Lake County, Indiana (county FIPS code 18089).

What city is ZIP code 46312?

The primary USPS city for 46312 is East Chicago, IN.

What metro area (MSA) is 46312 in?

46312 is part of the Chicago-Naperville-Elgin, IL-IN-WI Metro Area (MSA code 16980).

What is the population of ZIP code 46312?

The 2020 Census population of 46312 was 26,370 residents.

What is the median income in ZIP code 46312?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 46312 is about $28,937, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.