Northwoods, MO ZIP Codes
One ZIP code serves Northwoods, Missouri: 63121. Together they are home to 25,008 residents in 11,142 households. That is more than the 3,623 people counted inside Northwoods city limits, because these ZIP codes reach past its boundary.
Northwoods city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 3,623 |
| Households | 1,773 |
| Median household income | $45,330 |
| Median home value | $76,000 |
| Median age | 48.1 |
| Median rent | $1,167 |
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 Northwoods
| 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 | 10% of its land |
A ZIP code is listed for Northwoods when at least 10% of its land lies inside Northwoods city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Northwoods. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Northwoods.
Counties
- St. Louis County — 46 ZIP codes
Price a mailing to Northwoods ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Northwoods, MO?
- 63121. A ZIP code is listed for Northwoods when at least 10% of its land lies inside Northwoods city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Northwoods.
- What is the population of Northwoods, MO?
- The Census Bureau counts 3,623 residents inside Northwoods city limits (ACS 2020–2024). The 1 ZIP code that serve Northwoods hold 25,008 residents in all.
- What is the median household income in Northwoods, MO?
- $45,330 inside Northwoods 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 Northwoods, 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.