Weldon Spring, MO ZIP Codes
One ZIP code serves Weldon Spring, Missouri: 63304. Together they are home to 43,195 residents in 16,284 households. That is more than the 5,310 people counted inside Weldon Spring city limits, because these ZIP codes reach past its boundary.
Weldon Spring city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 5,310 |
| Households | 2,038 |
| Median household income | $158,548 |
| Median home value | $544,300 |
| Median age | 52.2 |
| Median rent | $2,800 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 43,195 |
| Households (sum of ZIP codes) | 16,284 |
| Median household income, range across ZIP codes | $114,442 (63304) to $114,442 (63304) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $114,442 |
| Homeowners | 87.7% |
| Households with kids under 18 | 33.8% |
| Moved in the past year | 8.1% |
| Carrier routes in EDDM2GO's route library | 29 routes, 17,988 homes (1 of 1 ZIP codes) |
Every ZIP code in Weldon Spring
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 63304 | Saint Charles | 43,195 | 16,284 | $114,442 | $351,000 | 87.7% | 33.8% | 8.1% | 29 | 18,934 | 14% of its land |
A ZIP code is listed for Weldon Spring when at least 10% of its land lies inside Weldon Spring city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Weldon Spring. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Weldon Spring.
Counties
- St. Charles County — 14 ZIP codes
Nearby cities sharing these ZIP codes
- St. Peters — 2 ZIP codes
- Cottleville — 2 ZIP codes
Price a mailing to Weldon Spring ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Weldon Spring, MO?
- 63304. A ZIP code is listed for Weldon Spring when at least 10% of its land lies inside Weldon Spring city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Weldon Spring.
- What is the population of Weldon Spring, MO?
- The Census Bureau counts 5,310 residents inside Weldon Spring city limits (ACS 2020–2024). The 1 ZIP code that serve Weldon Spring hold 43,195 residents in all.
- What is the median household income in Weldon Spring, MO?
- $158,548 inside Weldon Spring city limits, per the Census Bureau. Across its ZIP codes the medians run from $114,442 to $114,442.
- How many carrier routes and mailboxes are in Weldon Spring, MO?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 29 carrier routes reaching 17,988 residential and 945 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.