Portage Des Sioux, MO · standard
ZIP Code 63373
St. Charles County, Missouri - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 603
- 14/sq mi Moderate-density area
- $88,750
- Median income Above-median income area
- $221,300
- Median home value Near-median home value
- 24.1%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Portage Des Sioux pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.
- Top 28%
- household income, US ZIPs
- Top 50%
- home value, US ZIPs
- 14
- people per sq mi
- 86%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 63373 against every reporting US ZIP.
ZIP code 63373 is a sparsely populated ZIP (a standard USPS delivery area) in Portage Des Sioux, St. Charles County, Missouri, home to just 603 residents across 43.1 square miles, a density of 14 people per square mile, in the Chicago time zone.
ZIP 63373 lands in the middle-income range, with a median household income of $88,750 (33% above the average Missouri ZIP), while per-capita income is $48,564. The poverty rate is 8.0%, with unemployment at 2.6%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $221,300 (16% above the average Missouri ZIP), while 85.8% of occupied homes are owner-occupied and median rent is $1,082.
Educational attainment sits below the national norm: 24.1% of adults hold a bachelor's degree or higher, the median age is 46, and the average commute is -. The page also surfaces 8 ZIP codes within roughly 10 miles and 6 more in St. Charles County, so 63373 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 →
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 63373, Portage Des Sioux, MO · 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
603
Population
43.1
Area (sq mi)
14
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 63373?
46.0
Median Age
49.3%
Male
50.7%
Female
1.2%
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?
$88,750
Median Household Income
+33% vs state ZIP avg
$48,564
Per Capita Income
8.0%
Poverty Rate
2.6%
Unemployment Rate
How ZIP 63373 ranks among Missouri ZIPs
Portage Des Sioux, MO household income vs. every Missouri ZIP code
Median household income among 948 reporting Missouri ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$88,750 Top 14% higher than 86% of 948 Missouri ZIPs
Each bar is a $20K-wide band; taller bars hold more Missouri 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
303housing units
303
Total Housing Units
260
Occupied Units
43
Vacant Units
2.65
Avg Household Size
Occupancy Type
$221,300
Median Home Value
+16% vs state ZIP avg
$1,082
Median Rent
1968
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 13 business establishments in ZIP 63373, employing approximately 60 people with a combined annual payroll of $1,892,000.
13
Businesses
60
Employees
$1.9M
Annual Payroll
1
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 3 | 23.1% |
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 63373 vs 62028 →
ZIP 63373 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 63301
Saint Charles (63301)
48,514 residents
- 63031
Florissant (63031)
48,212 residents
- 63033
Florissant (63033)
43,000 residents
- 63042
Hazelwood (63042)
19,602 residents
- 63034 17,761
Florissant (63034)
17,761 residents
- 62037 1,993
Grafton (62037)
1,993 residents
- 62028 1,276
Elsah (62028)
1,276 residents
- 62022 1,138
Dow (62022)
1,138 residents
- 63373 603
Portage Des Sioux (63373)
603 residents
What this shows Among its immediate neighbors, ZIP 63373 ranks #9 by population - useful context the national average alone can't give.
ZIP 63373 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 62022
Dow (62022)
$110,703 median income
- 63034
Florissant (63034)
$103,905 median income
- 63373
Portage Des Sioux (63373)
$88,750 median income
- 63301
Saint Charles (63301)
$85,308 median income
- 62037
Grafton (62037)
$73,454 median income
- 62028
Elsah (62028)
$72,031 median income
- 63031
Florissant (63031)
$70,811 median income
- 63033
Florissant (63033)
$66,776 median income
- 63042
Hazelwood (63042)
$49,453 median income
What this shows By household income, ZIP 63373 ranks #3 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 63373, both outside MO so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in St. Charles County
Related Areas
Frequently Asked Questions
What county is ZIP code 63373 in?
ZIP code 63373 (Portage Des Sioux) is located in St. Charles County, Missouri. St. Charles County contains multiple ZIP codes, see the full list at /counties/st-charles-mo.
What is the population of ZIP code 63373?
ZIP code 63373 in Portage Des Sioux, MO has a population of 603 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 63373?
The median household income in ZIP 63373 is $88,750, which is 16% above the national average of $76,288.
What is the average home value in ZIP 63373?
The median home value in ZIP 63373 is $221,300, which is 20% below the national average of $278,155.
What is the demographic makeup of ZIP 63373?
The largest racial group in ZIP 63373 is White at 91.0%. Hispanic or Latino residents make up 6.7% of the population.
How many businesses are in ZIP code 63373?
ZIP code 63373 has 13 business establishments employing approximately 60 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 63373?
In ZIP code 63373, 65.4% of residents aged 25+ have a high school diploma or higher, and 24.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 63373?
In ZIP code 63373, approximately 85.8% of occupied housing units are owner-occupied and 14.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 63373?
The poverty rate in ZIP code 63373 is 8.0% 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 63373's numbers, next.
- See how ZIP 63373 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Portage Des Sioux, MO ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.