Zip Code 46321
Munster, Indiana — Lake County
📍 ZIP code 46321 is in Munster, Lake County, Indiana.
ZIP code 46321 is located in Munster, Lake County, Indiana. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 23,733. The area code for ZIP code 46321 is 317.
Quick Answer
Zip code 46321 is in Munster, Indiana (Lake County). It has a population of 23,733, median household income of $105,764, and median home value of $312,000.
Population
23,733
Income
$105,764
Home Value
$312,000
Climate
84°F / 15°F
About Zip Code 46321
Zip code 46321 is located in Munster, Indiana, within Lake County. Home to approximately 23,733 residents, this area sits at an elevation of 616 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 317.
The median household income is $105,764 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $312,000, and the cost of living index is 115 (15% above the national average of 100).
Summers average a high of 84°F while winters drop to 15°F. The area receives about 42 in of rain and 28 in of snow annually. The zip code covers 7.5 square miles of land area and 0.1 square miles of water.
Key Statistics
23,733
$105,764
$312,000
Eastern (EST/EDT)
317
616 ft
7.5 sq mi
45.3
9,786
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Compare With Nearby Zip Codes
| Metric | 46321 | 46322 | 46324 | 60438 | 46323 | 46319 |
|---|---|---|---|---|---|---|
| City | Munster, IN | Highland, IN | Hammond, IN | Lansing, IL | Hammond, IN | Griffith, IN |
| Population | 23,733 | 23,749 | 21,433 | 28,802 | 23,184 | 17,683 |
| Median Income | $105,764 | $76,219 | $61,118 | $72,043 | $56,906 | $75,976 |
| Home Value | $312,000 | $219,500 | $141,600 | $168,600 | $149,200 | $194,300 |
| Cost of Living | 115 | 82 | 60 | 70 | 60 | 77 |
| Median Age | 45.3 | 44.5 | 37.8 | 40.1 | 36.9 | 38.5 |
Cost of Living
100 = National Average. Munster's cost of living is 15% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
2.9x
Demographics
Zip code 46321 has a population of 23,733 people with a median age of 45.3. There are 9,786 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Munster (46321) population trend from 2010 to 2024
↓ -8.7%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
84°F
15°F
42 in
28 in
Munster experiences warm summers with average highs around 84°F. Winters are cold with lows averaging 15°F. The area receives about 28 in of snow per year.
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Housing & Economy
Median Home Value
$312,000
Median Household Income
$105,764
With 9,786 housing units across 7.5 square miles, 46321 has a housing density of 1,305 units per square mile. The home price-to-income ratio is 2.9x.
Location & Geography
Latitude
41.5469°
Longitude
-87.5046°
Land Area
7.5 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 46321 (Munster, IN) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 46321's $105,764. A way to compare Munster to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 46321 (Munster, IN). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Munster, Indiana?
Munster, Indiana uses zip code 46321.
What county is zip code 46321 in?
Zip code 46321 is located in Lake County, Indiana.
What is the population of zip code 46321?
The population of zip code 46321 is 23,733 with a median age of 45.3.
Is 46321 in Munster, Indiana?
Yes, zip code 46321 is in Munster, Lake County, Indiana. The area code is 317.
Frequently Asked Questions
What city is zip code 46321 in?
Zip code 46321 is in Munster, Indiana. It is part of Lake County and uses the Eastern (EST/EDT) timezone.
What is zip code 46321?
Zip code 46321 is a U.S. postal code in Munster, Indiana (Lake County). It has a population of 23,733 and covers 7.5 square miles.
What is the population of zip code 46321?
The population of zip code 46321 (Munster, IN) is 23,733 with a median age of 45.3. There are approximately 9,786 housing units in this area.
What is the median income in zip code 46321?
The median household income in zip code 46321 (Munster, IN) is $105,764 per year. The cost of living index is 115 (100 = national average).
What is the average home price in zip code 46321?
The median home value in zip code 46321 (Munster, IN) is $312,000. The cost of living index is 115 compared to the national average of 100.
What county is zip code 46321 in?
Zip code 46321 is located in Lake County, Indiana. The primary city is Munster.
What is the area code for zip code 46321?
Zip code 46321 in Munster, IN uses area code 317. It is located in the Eastern (EST/EDT) timezone.
Is zip code 46321 a good place to live?
Zip code 46321 (Munster, IN) has a cost of living index of 115 (100 = national average), a median household income of $105,764, and median home values of $312,000. The median age is 45.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 46321?
The cost of living index for zip code 46321 (Munster, IN) is 115, where 100 represents the national average. This area is above the national average. Median home value: $312,000.
What schools serve zip code 46321?
Zip code 46321 in Munster, Indiana is served by the local school district of Lake County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.