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 High-density area
- $127,146
- Median income Above-median income area
- $408,900
- Median home value Above-median home value
- 42.5%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 46373 (Saint John, IN) rose +1.1% from 2023 to 2024. The all-transactions index moved from 200.3 in 2023 to 202.4 in 2024 (2000 = 100).
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 average Indiana ZIP), while per-capita income is $56,346. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.8% and unemployment is 2.7%. Housing is both higher-cost and owner-heavy: median home value is $408,900 (111% above the average Indiana ZIP), while 97.1% of occupied homes are owner-occupied and median rent is $981.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Lake County, so 46373 can be compared with both its immediate and county-level context.
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.
- Construction
Construction
61 establishments
- Health care and social assistance
Health care and social assistance
50 establishments
- Retail trade
Retail trade
47 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
40 establishments
- Finance and insurance
Finance and insurance
35 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, 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
Who lives in ZIP 46373?
44.4
Median Age
51.0%
Male
49.0%
Female
5.8%
Foreign-Born
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 ZIP avg
$56,346
Per Capita Income
2.8%
Poverty Rate
2.7%
Unemployment Rate
30.9 min
Mean Commute Time
How ZIP 46373 ranks among Indiana ZIPs
Saint John, IN household income vs. every Indiana ZIP code
Median household income among 721 reporting Indiana ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$127,146 Top 2% higher than 98% of 721 Indiana ZIPs
Each bar is a $20K-wide band; taller bars hold more Indiana 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
6,751housing units
6,751
Total Housing Units
6,658
Occupied Units
93
Vacant Units
2.82
Avg Household Size
Occupancy Type
$408,900
Median Home Value
+111% vs state ZIP avg
$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.
- 46410
Merrillville (46410)
38,340 residents
- 46375
Schererville (46375)
23,820 residents
- 46322
Highland (46322)
23,727 residents
- 46321
Munster (46321)
23,603 residents
- 46324
Hammond (46324)
23,165 residents
- 46323
Hammond (46323)
22,743 residents
- 46311
Dyer (46311)
20,816 residents
- 46319
Griffith (46319)
18,404 residents
- 60417
Crete (60417)
15,547 residents
What this shows Among its immediate neighbors, ZIP 46373 ranks #0 by population - useful context the national average alone can't give.
ZIP 46373 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 46373
Saint John (46373)
$127,146 median income
- 46311
Dyer (46311)
$116,652 median income
- 46321
Munster (46321)
$110,187 median income
- 46375
Schererville (46375)
$93,160 median income
- 60417
Crete (60417)
$91,952 median income
- 46303
Cedar Lake (46303)
$84,211 median income
- 46322
Highland (46322)
$78,062 median income
- 46319
Griffith (46319)
$74,662 median income
- 46410
Merrillville (46410)
$64,127 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 46373, both outside IN so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (13,859 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Lake County
Related Areas
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.
Related
Take this with you
What to do with ZIP 46373's numbers, next.
- See how ZIP 46373 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Saint John, IN ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.