ZIP code 63304
Where is ZIP code 63304?
Saint Charles, Missouri
St. Charles County · Standard ZIP code
ZIP code 63304 belongs to Saint Charles, Missouri in St. Charles County. 63304 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area code 636. About 43,195 people live in the 63304 area, where the median household income is $114,442. The closest ZIP codes are 63338 (Cottleville, 1.7 mi west), 63376 (Saint Peters, 2.9 mi north) and 63303 (Saint Charles, 4.4 mi east).
| ZIP code | 63304 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Saint Charles |
| Also accepted | Cottleville, Saint Peters, Weldon Spring |
| State | Missouri (MO) |
| County | St. Charles County |
| Time zone | Central Time · now |
| Area code | 636 |
| Coordinates | 38.7378, -90.6234 map |
| 3-digit prefix | 633 |
Population and income in 63304
| Population | 43,195 · higher than 98% of Missouri ZIP codes |
|---|---|
| People per square mile | 784 · higher than 86% of Missouri ZIP codes |
| Median age | 40.7 years · lower than 55% of Missouri ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $114,442 · higher than 96% of Missouri ZIP codes |
| Income per person | $60,115 |
| Below the poverty line | 3.5% |
| Bachelor’s degree or higher | 49% of adults 25+ |
| Median home value | $351,000 · higher than 94% of Missouri ZIP codes |
| Median rent | $1,749 a month |
| Housing units | 16,690 |
| Households | 16,284 (2.65 people on average) |
| Owners / renters | 88% / 12% |
| Land area | 55.1 sq mi (plus 3.29 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 63304. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 63304
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 63338 | Cottleville, MO | 1.7 mi W | PO Box only |
| 63376 | Saint Peters, MO | 2.9 mi N | Standard |
| 63303 | Saint Charles, MO | 4.4 mi E | Standard |
| 63006 | Chesterfield, MO | 5.7 mi SE | PO Box only |
| 63368 | O Fallon, MO | 5.8 mi W | Standard |
| 63005 | Chesterfield, MO | 7.3 mi S | Standard |
| 63301 | Saint Charles, MO | 7.7 mi NE | Standard |
| 63017 | Chesterfield, MO | 7.7 mi SE | Standard |
| 63302 | Saint Charles, MO | 8.3 mi NE | PO Box only |
| 63045 | Earth City, MO | 8.7 mi E | Standard |
| 63366 | O Fallon, MO | 8.8 mi NW | Standard |
| 63146 | Saint Louis, MO | 8.8 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 63304 or measure the distance to another ZIP code.
How to address mail to 63304
123 MAIN ST
SAINT CHARLES MO 63304
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts COTTLEVILLE, SAINT PETERS and WELDON SPRING as the city name for 63304. Avoid St Peters and Weldon Spring Heights: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (63304-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Saint Charles, MO
All Saint Charles ZIP codes with population and income →
Questions
- What city is ZIP code 63304?
- 63304 is a Saint Charles, Missouri ZIP code. Cottleville, Saint Peters and Weldon Spring are also accepted as the city name.
- What county is 63304 in?
- ZIP code 63304 is in St. Charles County, Missouri.
- What time zone is ZIP code 63304 in?
- 63304 is in the Central Time zone (America/Chicago).
- What area code is 63304?
- Phone numbers in ZIP code 63304 use area code 636.
- What is the population of ZIP code 63304?
- About 43,195 people live in ZIP code 63304, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 63304?
- The median household income in 63304 is $114,442 a year, higher than 96% of Missouri ZIP codes.
- What ZIP codes are near 63304?
- The nearest ZIP codes to 63304 are 63338 (Cottleville, 1.7 miles), 63376 (Saint Peters, 2.9 miles), 63303 (Saint Charles, 4.4 miles) and 63006 (Chesterfield, 5.7 miles).