PlainZIP

Saint John, IN · standard

ZIP Code 46373

Lake County, Indiana - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

13,859
529/sq mi
$127,146
Median income
$408,900
Median home value
42.5%
Bachelor's or higher

The verdict

Saint John pairs a top-decile household income with upper-quartile home values, in a low-density, homeowner-dominated area.

Top 8%
household income, US ZIPs
Top 20%
home value, US ZIPs
529
people per sq mi
97%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 46373 against every reporting US ZIP.

ZIP code 46373 is a mid-sized community (a standard USPS delivery area) in Saint John, Lake County, Indiana, home to 13,859 residents across 26.2 square miles, a density of 529 people per square mile, in the Chicago time zone.

ZIP 46373 skews affluent, with a median household income of $127,146 (73% above the Indiana average), while per-capita income is $56,346. The poverty rate stands at 2.8% and the unemployment rate at 2.7%. Housing costs here run $408,900 for a typical home value (111% above the state average), with rent averaging $981 a month; 97.1% of homes are owner-occupied.

A solid share of residents have a four-year degree: 42.5% of adults hold a bachelor's degree or higher, the median age is 44.4, and the average commute is 31 minutes. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Lake County, letting you compare 46373 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 46373

Top 5 sectors by establishment count in Saint John, IN

Which industries have the most business establishments in ZIP 46373.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 46373, Saint John, IN · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

13,859

Population

26.2

Area (sq mi)

529

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 46373?

44.4

Median Age

51.0%

Male

49.0%

Female

5.8%

Foreign-Born

White 82.9%
African American 2.1%
Asian 1.5%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 7.7%
Hispanic or Latino 11.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$127,146

Median Household Income

+73% vs state

$56,346

Per Capita Income

2.8%

Poverty Rate

2.7%

Unemployment Rate

30.9 min

Mean Commute Time

How ZIP 46373 ranks nationally

Saint John, IN household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$127,146 Top 8% higher than 92% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.7%
Bachelor's Degree or Higher 42.5%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

6,751

Total Housing Units

6,658

Occupied Units

93

Vacant Units

2.82

Avg Household Size

Occupancy Type

Owner 97.1%
Renter 2.9%

$408,900

Median Home Value

+111% vs state

$981

Median Rent

2001

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+1.1%

YoY Change (2024)

202

HPI Index (2000 = 100)

+102%

Total Change Since 2000

Home values in ZIP 46373 have increased 1.1% over the past year (2024). Since 2000, this ZIP has seen +102% cumulative appreciation.

Year Annual Change HPI Index
2020 +0.8% 154
2021 +9.4% 169
2022 +14.9% 194
2023 +3.2% 200
2024 +1.1% 202

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 402 business establishments in ZIP 46373, employing approximately 3,891 people with a combined annual payroll of $164,104,000.

402

Businesses

3,891

Employees

$164.1M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Construction 61 15.2%
Health care and social assistance 50 12.4%
Retail trade 47 11.7%
Professional, scientific, and technical services 40 9.9%
Finance and insurance 35 8.7%
Other services (except public administration) 35 8.7%
Accommodation and food services 29 7.2%
Real estate and rental and leasing 24 6.0%
Wholesale trade 20 5.0%
Transportation and warehousing 17 4.2%
Administrative and support and waste management and remediation services 14 3.5%
Manufacturing 11 2.7%
Arts, entertainment, and recreation 8 2.0%
Information 5 1.2%
Educational services 5 1.2%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 46373 vs 46311 →

ZIP 46373 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 46373 ranks #0 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 46373 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 46373 ranks the highest of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
46311 Dyer, IN 20,816 2.4 mi
46375 Schererville, IN 23,820 3.3 mi
46303 Cedar Lake, IN 14,170 5.3 mi
46322 Highland, IN 23,727 7.0 mi
46319 Griffith, IN 18,404 5.9 mi
46321 Munster, IN 23,603 7.1 mi
60417 Crete, IL 15,547 6.6 mi
46323 Hammond, IN 22,743 9.9 mi
46324 Hammond, IN 23,165 9.5 mi
46410 Merrillville, IN 38,340 7.4 mi

More ZIP Codes in Lake County

46307 standard
Crown Point, IN
Pop: 60,619
46410 standard
Merrillville, IN
Pop: 38,340
46342 standard
Hobart, IN
Pop: 31,244
46312 standard
East Chicago, IN
Pop: 29,698
46375 standard
Schererville, IN
Pop: 23,820
46322 standard
Highland, IN
Pop: 23,727

Related Areas

Lake County Saint John, IN Indiana

Frequently Asked Questions

What county is ZIP code 46373 in? ▼
ZIP code 46373 (Saint John) is located in Lake County, Indiana. Lake County contains multiple ZIP codes, see the full list at /counties/lake-in.
What is the population of ZIP code 46373? ▼
ZIP code 46373 in Saint John, IN has a population of 13,859 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 46373? ▼
The median household income in ZIP 46373 is $127,146, which is 67% above the national average of $76,288.
What is the average home value in ZIP 46373? ▼
The median home value in ZIP 46373 is $408,900, which is 47% above the national average of $278,155.
What is the demographic makeup of ZIP 46373? ▼
The largest racial group in ZIP 46373 is White at 82.9%. Hispanic or Latino residents make up 11.5% of the population.
How many businesses are in ZIP code 46373? ▼
ZIP code 46373 has 402 business establishments employing approximately 3,891 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 46373? ▼
The top industries by establishment count in ZIP 46373 are: Construction (61), Health care and social assistance (50), Retail trade (47). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 46373? ▼
According to the FHFA House Price Index, home values in ZIP 46373 increased by 1.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 102%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 46373? ▼
In ZIP code 46373, 66.7% of residents aged 25+ have a high school diploma or higher, and 42.5% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 46373? ▼
The mean commute time for workers in ZIP code 46373 is 30.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 46373? ▼
In ZIP code 46373, approximately 97.1% of occupied housing units are owner-occupied and 2.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 46373? ▼
The poverty rate in ZIP code 46373 is 2.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.