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US ZIP Code Profile

ZIP Code 46319
Griffith, Indiana

ZIP code 46319 is in Griffith, located in Lake County, Indiana, within the Chicago-Naperville-Elgin metro area. Its 2020 Census population was 18,108. The estimated median adjusted gross income per tax return is $46,934, and about 2% of filers report $200,000 or more.

2020 Population
18,108
Census ZCTA
County
Lake
FIPS 18089
Median income (est.)
$46,934
IRS SOI 2022
Land Area
9.267 mi²
+ 0.023 mi² water

01Location & Geography

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

Primary CityGriffith, 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
Coordinates41.52547, -87.4222
Land / Water Area9.267 mi² land · 0.023 mi² water

02Income & Economics

Distribution of the 8,640 individual tax returns filed in 46319 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
28.5%
$25K–$50K
24.5%
$50K–$75K
17.5%
$75K–$100K
11.8%
$100K–$200K
15.5%
$200K+
2.2%
The $200,000+ bracket accounts for 11% of 46319's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($46,934) 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 46319's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,934
▲ 4.6%
Filers earning $200K+
2.2%
▲ 0.5 pt
Total filers
8,640
▼ 1.1%
GET /zipc/v2/zipcodes/46319/soi?year=… $42K 2020 $45K 2021 $47K 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 46319 ZCTA.

2000
19,174
 
2010
18,404
▼ -4.0%
2020
18,108
▼ -1.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 46319. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 46319

Griffith and its immediate neighbors, sorted by distance.

3 mi
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Distance from 46319 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number173498
City AliasesGriffith, New Elliott

07Frequently Asked Questions

What county is ZIP code 46319 in?

ZIP code 46319 is in Lake County, Indiana (county FIPS code 18089).

What city is ZIP code 46319?

The primary USPS city for 46319 is Griffith, IN.

What metro area (MSA) is 46319 in?

46319 is part of the Chicago-Naperville-Elgin, IL-IN-WI Metro Area (MSA code 16980).

What is the population of ZIP code 46319?

The 2020 Census population of 46319 was 18,108 residents.

What is the median income in ZIP code 46319?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 46319 is about $46,934, with around 2% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.