ZIP codes
14
St. Charles County, MO Demographics & ZIP Codes
St. Charles County, Missouri demographics and median household income by ZIP code — 14 ZIP codes — population 411,888 — avg. income $108,519 — avg. home value $316,746. Compare income, housing, and ZIP-level data on US5.
Population
411,888
Median household income (avg.)
$108,519
144% of U.S. median
Average home value
$316,746
91% of U.S. median
Average rent
$1,111
96% of U.S. median
St. Charles County demographics
St. Charles County, Missouri covers 14 ZIP codes, with a combined ZIP-area population of about 411,888.
Median household income in St. Charles County
The average median household income across ZIP codes in St. Charles County, Missouri is about $108,519 — about 66% above the MO ZIP average ($65,505), and about 44% above the U.S. median ($75,149).
Among ZIPs with income data, 63341 (Defiance) is near the top at about $177,583, while 63365 (New Melle) is near the bottom at about $41,125.
Housing in St. Charles County
For housing in St. Charles County, Missouri, the average median home value is about $316,746 and the average median rent is about $1,111.
The most populous ZIP is 63376 (St. Peters) with about 74,876 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in St. Charles County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 63376 | St. Peters | St. Charles County | MO | 74,876 | $94,921 | $255,500 |
| 63366 | O'Fallon | St. Charles County | MO | 54,449 | $98,237 | $283,900 |
| 63301 | St. Charles | St. Charles County | MO | 51,625 | $83,551 | $249,400 |
| 63385 | Wentzville | St. Charles County | MO | 50,420 | $111,851 | $321,300 |
| 63303 | St. Charles | St. Charles County | MO | 46,627 | $98,031 | $301,700 |
| 63368 | O'Fallon | St. Charles County | MO | 45,862 | $118,811 | $327,700 |
| 63304 | Weldon Spring | St. Charles County | MO | 43,389 | $114,124 | $331,300 |
| 63367 | Lake St. Louis | St. Charles County | MO | 27,893 | $134,932 | $381,000 |
| 63348 | Foristell | St. Charles County | MO | 10,207 | $106,458 | $364,900 |
| 63341 | Defiance | St. Charles County | MO | 3,554 | $177,583 | $552,600 |
| 63332 | Augusta | St. Charles County | MO | 1,676 | $137,083 | $385,600 |
| 63373 | Portage Des Sioux | St. Charles County | MO | 717 | $77,250 | $206,500 |
| 63386 | West Alton | St. Charles County | MO | 537 | $125,313 | $156,300 |
| 63365 | New Melle | St. Charles County | MO | 56 | $41,125 | — |
Frequently asked questions
What are the demographics of St. Charles County?
St. Charles County, Missouri has a combined ZIP-area population of about 411,888 across 14 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in St. Charles County?
The average median household income across ZIP codes in St. Charles County, Missouri is about $108,519, about 66% above the state ZIP average ($65,505), and about 44% above the U.S. median ($75,149). Average median home value is about $316,746. Among ZIPs with data, 63341 (Defiance) is near the top ($177,583) and 63365 (New Melle) is near the bottom ($41,125).
How many ZIP codes are in St. Charles County?
St. Charles County, Missouri includes 14 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for St. Charles County?
This page lists ZIP codes in St. Charles County, Missouri with population, median household income, and home value. Select a ZIP for a full demographics profile.