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63357
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  2. ZIP Codes
  3. ZIP Code 63357
Missouri (MO)Warren CountySt. Louis636

ZIP Code 63357 — Marthasville, MO

Warren County * St. Louis metro

Compare

6.5K

Population

$92.2K

Median income

per household

$292.6K

Home value

6.2%

Poverty rate

What stands out

  • Median household income: $92.2K (top quartile vs US ZIP codes).
  • Median home value: $292.6K.
  • Poverty rate: 6.2%.

Categories vs U.S.

Economy

2 of 5 metrics better than U.S. benchmarks

Median household income

$92.2K

U.S.

$81K

Per-capita income

$37.7K

U.S.

$45K

Median home value

$292.6K

U.S.

$333K

Housing stress

Rent-burdened renters (≥30%)

21.1%

U.S.

51.1%

Severely rent-burdened (≥50%)

7.5%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

10.8%

Below 30% threshold

Home-Value-to-Income

3.2×

Within typical 3-5x range

Income distribution

Share of households by income bracket (ACS).

< $50k
23.2%
$50–100k
31.1%
$100–200k
38.4%
$200k+
7.3%

Health

3 of 6 available metrics better than U.S.

CDC PLACES modeled ZCTA-level estimates (adult prevalence).

Obesity

37.4%

U.S.

33.3%

Diabetes

11.4%

U.S.

12.0%

Current smoking

15.0%

U.S.

13.1%

Connectivity

1 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

70.5%

U.S.

85.3%

Gigabit ready

1.4%

U.S.

8.6%

5G available

85.1%

U.S.

77.4%

Learning

Education metrics come from ACS 5-year estimates for ZIP Code Tabulation Areas (ZCTAs).

Bachelor's degree+ (age 25+)

24.6%

U.S.

35.7%

ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as noise.

School districts

Washington School District

Map

ZIP 63357

Marthasville, MO

Population

6.5K

Area

122.9 sq mi

Density

53.2/sq mi

Neighbors

6301463068630906333263348633836339065041
More Details

Census Tracts

4 tracts overlap this ZIP. Hover over segments to explore.

53%
37%
6%

Tract 8202.03

53.1%

Tract 8202.04

36.8%

Tract 8202.01

6.4%

Tract 3122.04

3.8%

Total tracts: 4Coverage: 100.0%

Representation

U.S. House

ZIP codes can span multiple congressional districts. Overlap percentages are approximate by land area. Verify by address.

100%

MO-2

100%

Districts: 1Coverage: 100.0%

Data freshness

ACS 5-Year
2020–2024
CDC PLACES
2025
Broadband
2020-12
Mobile
2025-11-24
Page Updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

US Census Bureau (ACS 5-year)HUD USPS ZIP crosswalkUS Census TIGER/Line (geometry inputs)US Census TIGER/Line (school districts)US Census Bureau (ZCTA-to-tract relationship, 2020)US Census Bureau (2020 ZCTA-to-congressional-district relationship file, CD119)CDC PLACES (ZCTA)FCC (Form 477 broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ZIP pages use Census ZIP Code Tabulation Areas (ZCTAs), not USPS delivery routes.
  • Population density is computed as population ÷ land area.
  • Overlap percentages (tracts and districts) are derived from map geometry and are approximate.

Data accuracy & methodology

ZIP pages combine 2020–2024 ACS 5-year ZCTA estimates with other public datasets when available (see Sources). Connectivity metrics use FCC coverage data, not ACS. ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as statistical noise rather than precise changes.