Residential delivery area · Indiana
ZIP Code 46319: Griffith, IN
ZIP code 46319 is in Griffith, Indiana, entirely in Lake County (Census 2020 ZIP-county file). About 18,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $74,662 (Census Bureau, ACS 2020-2024). By Census place, 76% of its land lies in Griffith; 24% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Griffith · its only residential ZIP
- County
- Lake County
- Census places
- Griffith
- Metro area
- Chicago-Naperville-Elgin, IL-IN
- House district
- IN-1 119th Congress
- State
- Indiana
- Time zone
- Central
- Land area
- 9.6 sq mi · 1,863 people per sq mi
Where is ZIP code 46319?
46319 centers on 41.522°, -87.422° and covers 9.6 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 46322, 46375, 46408, 46410, 46406.
The map draws ZIP code areas only. For the streets inside 46319, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 46319 compare with the rest of Lake County?
| Measure | 46319 | In Lake County | In IN |
|---|---|---|---|
| People (ACS 2020-2024) | 17,847 | 13th of 28 | 145th of 807 |
| Median household income | $75k | 11th of 26 | 203rd of 478 |
| Median home value | $203k | 12th of 25 | 222nd of 509 |
Its median household income is higher than in 54% of U.S. residential ZIP codes, and it is denser than 84% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 46319?
The 2020 Census counted 18,108 people in 46319; the ACS, which samples households over 2020-2024, estimates 17,847. Between the 2010 and 2020 censuses its population fell 1.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 17,847
- 2020 Census count
- 18,108−1.6% since 2010 (18,404)
- Households
- 7,615
- Median age
- 37.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 46319?
Of the 17,847 people the ACS estimates in 46319, 20.3% are under 18 and 18.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (61.2%), then Hispanic or Latino (18.0%).
- Under 1820.3%
- 18 to 6461.4%
- 65 and older18.2%
- White, not Hispanic61.2%
- Hispanic or Latino18.0%
- Black, not Hispanic13.4%
- Other or two or more5.5%
- Asian, not Hispanic1.9%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 46319 earn?
Median household income is $74,662 (ACS 2020-2024), the 11th highest of the 26 ranked ZIP codes in Lake County. It is not measurably different from 2015-2019 ($79,846 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $74,662
- Income per person
- $39,854
- Below the poverty line
- 6.8%
- Unemployed (of the labor force)
- 3.7%
- Adults 25+ with a bachelor's degree
- 27.0%
- Adjusted gross income per tax return, 2022
- $61,3848,640 returns; wages 78% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 46319?
FHFA's house price index for 46319, built from repeat sales and appraisals of the same homes, rose 92% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +3.6% in 2025.
- Median home value (owners' estimate)
- $203,300
- Median gross rent
- $1,242
- Homes owned by their occupants
- 72.9%
- Housing units
- 8,038
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 46319?
391 business establishments had a location in this ZIP code in 2023, 18 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade54
- Other services (except public administration)51
- Construction47
- Transportation and warehousing44
- Accommodation and food services40
- Wholesale trade33
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 46319?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 46322 | Highland | 23,680 | $78k | 2.5 mi |
| 46375 | Schererville | 24,188 | $93k | 2.6 mi |
| 46408 | Gary | 15,747 | $48k | 3.2 mi |
| 46410 | Merrillville | 39,243 | $64k | 5.3 mi |
| 46406 | Gary | 9,001 | $36k | 5.9 mi |
| 46321 | Munster | 23,733 | $110k | 4.6 mi (near) |
| 46323 | Hammond | 23,047 | $60k | 5.0 mi (near) |
| 46404 | Gary | 15,428 | $42k | 5.0 mi (near) |
| 46409 | Gary | 7,184 | $45k | 5.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.