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ZIP CODE TABULATION AREA

63303

Missouri · 46,089 residents · 19.754 sq mi
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ZIP 63303 is wealthier than most US places, with a median household income of $99,138. Population has held roughly steady since 2024. 49% of adults hold a bachelor's degree or higher. Median home value is $321,100. Poverty is rare here, at 5.3% of residents. Among the 14 ZIP codes in St. Charles County, 63303 ranks 10th by median household income.

$99,138
US average: $82,259
$321,100
US average: $376,019
48.8%
US average: 35.6%
Age, sex & households
Under 18
17.8%
Age 65+
19.3%
49.7%
50.3%
2.21 people
Race & ethnicity · 2024
2024
White, non-Hispanic79.3%(36,561)
Black5.6%(2,600)
Hispanic / Latino4.8%(2,202)
Asian5.3%(2,434)
Other5%(2,292)
Diversity Score45%(20,740)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within St. Charles County
Income rank vs other ZIPs
LOWEST10TH OF 14HIGHEST
Adjacent ZIPs
63301$85,308
63304$114,442
63332$146,146
63341$170,598
Frequently asked

How many people live in ZIP code 63303?

ZIP code 63303 has about 46,089 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 63303?

The typical household in ZIP code 63303 earns about $99,138 a year. Half of households make more than that, and half make less.

Is ZIP code 63303 expensive?

In ZIP code 63303, the median home is worth about $321,100, and the typical rent is about $1,374 a month.

How educated are people in ZIP code 63303?

About 48.8% of adults age 25 and over in ZIP code 63303 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 63303?

About 5.3% of people in ZIP code 63303 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024