Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

Zip Code 63304, Saint Charles, MO

ZIP Code 63304 Details

Zip Code:63304
City:Saint Charles
State:MO [Missouri]
Multi County:No
City Alias(es):Saint Charles
Saint Peters
Weldon Spring
City Alias(es) To Avoid Using:St Peters
Weldon Spring Heights
Area Code:636 / 314
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Central (GMT -06:00)
Observes Daylight Saving:Yes
Elevation:613 ft
State FIPS:29
County FIPS:183
Division:West North Central
Intro Date:<2004-10

ZIP Code 63304 2010 Census Demographics

Current Population:45,664
2010 Population:40,336
Households per ZIP Code:14,277
Average House Value:$271,300
Avg. Income Per Household:$103,766
Persons Per Household:2.82
White Population:37,643
Black Population:1,664
Hispanic Population:860
Asian Population:1,136
American Indian Population:247
Hawaiian Population:22
Other Population:326
Male Population:19,826
Female Population:20,510
Median Age:39.20 years
Male Median Age:38.30 years
Female Median Age:39.90 years

ZIP Code 63304 Other Demographics

# Residential Mailboxes:16,193
# Business Mailboxes:965
Total Delivery Receptacles:21,021
Number of Businesses:912
1st Quarter Payroll:$150,285,000
Annual Payroll:$604,668,000
# of Employees:12,534
Water Area:3.294 sq mi
Land Area:55.1 sq mi
118th Congressional District:02|03
118th Congressional Land Area:465.76|6851.54 sq mi
Single Family Delivery Units:13,719
Multi Family Delivery Units:772
# Residential Mailboxes:16,193
# Business Mailboxes:965
Total Delivery Receptacles:21,021

ZIP Code 63304 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 7,210 7,560 +350
Retired Workers: 5,480 5,800 +320
Disabled Workers: 695 675 -20
Widow(er)s and Parents: 390 400 +10
Spouses: 265 290 +25
Children: 380 395 +15
65+: 5,705 6,065 +360
Monthly Benefits - All: $11,305,000 $12,163,000 +$858,000
Monthly Benefits - Retired Workers: $9,071,000 $9,888,000 +$817,000
Monthly Benefits - Widow(ers): $641,000 $658,000 +$17,000

ZIP Code 63304 Statistical Areas

CBSA: 41180
CBSA Name: St. Louis, MO-IL
CBSA Type: Metro
CBSA Division: 
CBSA Division Name: 
CBSA Population:2,812,896
CBSA Division Population:0
MSA: 7040
MSA Name: St. Louis, MO-IL MSA
PMSA Name: 
City State Key:W17756
Preferred Last Line Key:W17756
63303: Previous ZIP Code
Next ZIP Code: 63330


  1. U.S. Postal Service [Last Updated: 3/1/2023],
  2. Internal Data Creation [Last Updated: 3/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 3/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],