Cool Valley, MO ZIP Codes
One ZIP code serves Cool Valley, Missouri: 63121. Together they are home to 25,008 residents in 11,142 households. That is more than the 1,411 people counted inside Cool Valley city limits, because these ZIP codes reach past its boundary.
Cool Valley city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 1,411 |
| Households | 475 |
| Median household income | $53,560 |
| Median home value | $102,800 |
| Median age | 27.3 |
| Median rent | $992 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 25,008 |
| Households (sum of ZIP codes) | 11,142 |
| Median household income, range across ZIP codes | $42,701 (63121) to $42,701 (63121) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $42,701 |
| Homeowners | 51.6% |
| Households with kids under 18 | 22.4% |
| Moved in the past year | 15.9% |
| Carrier routes in EDDM2GO's route library | 24 routes, 10,903 homes (1 of 1 ZIP codes) |
Every ZIP code in Cool Valley
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 63121 | Saint Louis | 25,008 | 11,142 | $42,701 | $95,600 | 51.6% | 22.4% | 15.9% | 24 | 11,310 | 7% of its land |
A ZIP code is listed for Cool Valley when at least 10% of its land lies inside Cool Valley city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Cool Valley. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Cool Valley.
Counties
- St. Louis County — 46 ZIP codes
Price a mailing to Cool Valley ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Cool Valley, MO?
- 63121. A ZIP code is listed for Cool Valley when at least 10% of its land lies inside Cool Valley city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Cool Valley.
- What is the population of Cool Valley, MO?
- The Census Bureau counts 1,411 residents inside Cool Valley city limits (ACS 2020–2024). The 1 ZIP code that serve Cool Valley hold 25,008 residents in all.
- What is the median household income in Cool Valley, MO?
- $53,560 inside Cool Valley city limits, per the Census Bureau. Across its ZIP codes the medians run from $42,701 to $42,701.
- How many carrier routes and mailboxes are in Cool Valley, MO?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 24 carrier routes reaching 10,903 residential and 407 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.