ZIP Code 63304 - Saint Charles Missouri
Overview
ZIP Code 63304 is located in Saint Charles Missouri. Portions of 63304 are also in Cottleville and St. Peters and O'Fallon and Weldon Spring and Weldon Spring Heights and Cottleville Township and Dardenne Township and Boone Township (Saint Charles County) and Harvester Township and St. Peters Township and Weldon Spring Township. 63304 is entirely within Saint Charles County. Regionally, 63304 is located in Metro St. Louis.
ZIP Code 63304 Quick Stats
| ZIP Code Name | Saint Charles |
| Primary County | Saint Charles County |
| ZIP Code Type | Standard |
| Population (2022) | 42,738 |
| Area Code(s) | 636 |
| Current Time | CDT |
ZIP Code 63304 Map
63304 Demographics
63304 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in Missouri based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 63304 is White. The majority race/ethnicity attending public schools in 63304 is White. The current unemployment level in 63304 is 4.2%.
| Population | 42,738 |
| Population Growth Rate | 3.43% |
| Population Density | 1,142 People per Square Mile |
| Total Households | 14,390 |
| Percentage High Income Households | 6.8% |
| Median Household Income (2021) | $103,766 |
| Average Adjusted Gross Income (2021) | $445,200 |
| Current Unemployment Rate (May 2026) | 4.2% |
| Sales Tax Rate (2025) | 9.9% |
| Majority Race/Ethnicity | White - 91.36% |
| Public School Majority Race/Ethnicity | White - 80.97% |
63304 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 38,369 | 91.36% |
| Black | 1,383 | 3.29% |
| Hispanic | 1,343 | 3.2% |
| Asian | 863 | 2.05% |
| Native American | 40 | 0.1% |
| Hawaiian/Pac. Islander | 0 | 0% |
63304 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 7,612 | 84.53% |
| Black | 651 | 7.23% |
| Hispanic | 435 | 4.83% |
| Asian | 287 | 3.19% |
| Native American | 15 | 0.17% |
| Hawaiian/Pac. Islander | 5 | 0.06% |
63304 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 2,042 | 8.07% |
| Bachelor Degree | 6,846 | 27.06% |
| High School Diploma | 5,164 | 20.41% |
| No High School Diploma | 480 | 1.9% |
| GED or Alternate | 582 | 2.3% |
| 1 or More Years of College | 4,196 | 16.58% |
| Associates Degree | 1,889 | 7.47% |
| Masters Degree | 3,261 | 12.89% |
| Professional Degree | 463 | 1.83% |
| Doctorate Degree | 377 | 1.49% |
63304 Geography
| Coordinates | 38.71306992, -90.6540451 |
| Adjacent ZIP Codes | |
| Cities/Towns in 63304 | |
| Neighborhoods in 63304 | |
| Region | Metro St. Louis |
| Metropolitan/Micropolitan Stat Area | St. Louis, MO-IL |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 37 Square Miles |
63304 Schools
| School Districts in 63304 | |
| Elementary Schools in 63304 | |
| Middle Schools in 63304 | |
| High Schools in 63304 |
63304 Weather and Climate Data
| Plant Hardiness Zone | Zone 6a: -10F to -5F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 72f - River Hills | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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