Madison County, MO ZIP Codes
5 ZIP codes cover all or part of Madison County, Missouri: 63645, 63655, 63621, 63620 and 63636. The Census Bureau counts 12,729 residents in the county, with a median household income of $54,434 and a median home value of $159,000. Median household income ranges from $42,426 in 63620 to $87,825 in 63621. Its largest communities include Fredericktown, Junction City, Mine La Motte, Cobalt and Marquand.
Madison County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 12,729 |
| Households | 4,683 |
| Median household income | $54,434 |
| Median home value | $159,000 |
| Median age | 41.1 |
| Median rent | $808 |
All 5 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 16,307 |
| Households (sum of ZIP codes) | 6,162 |
| Median household income, range across ZIP codes | $42,426 (63620) to $87,825 (63621) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $57,935 |
| Homeowners | 75.1% |
| Households with kids under 18 | 28.3% |
| Moved in the past year | 12.4% |
| Carrier routes in EDDM2GO's route library | 19 routes, 7,240 homes (5 of 5 ZIP codes) |
Top facts
- Highest median household income in Madison County: 63621 ($87,825)
- Most residents: 63645 (11,554 people)
- Highest homeownership: 63621 (86.5% own their home)
- Most households with kids: 63645 (31.2% of households)
- Most new movers: 63645 (13.2% moved in last year)
- Youngest median age: 63645 (40.2 years)
- Highest median home value: 63620 ($202,600)
Every ZIP code in Madison County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 63645 | Fredericktown | 11,554 | 4,236 | $54,747 | $157,500 | 73.1% | 31.2% | 13.2% | 12 | 5,384 | 87% of its land |
| 63655 | Marquand | 1,639 | 666 | $61,469 | $175,600 | 78.5% | 16.7% | 12.8% | 2 | 667 | 66% of its land |
| 63621 | Arcadia | 1,632 | 607 | $87,825 | $175,300 | 86.5% | 24.2% | 13.0% | 1 | 554 | 31% of its land |
| 63620 | Annapolis | 1,036 | 451 | $42,426 | $202,600 | 71.8% | 22.0% | 6.5% | 3 | 766 | 21% of its land |
| 63636 | Des Arc | 446 | 202 | $65,000 | $65,400 | 77.7% | 32.2% | 2.0% | 1 | 218 | 24% of its land |
A ZIP code is listed for Madison County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Fredericktown — 4,507 residents · 1 ZIP code
- Junction City — 372 residents · 1 ZIP code
- Mine La Motte — 370 residents · 1 ZIP code
- Cobalt — 364 residents · 1 ZIP code
- Marquand — 187 residents · 1 ZIP code
- Cherokee Pass — 121 residents · 1 ZIP code
Price a mailing to Madison County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Madison County, MO?
- 63645, 63655, 63621, 63620 and 63636. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Madison County?
- 12,729 residents in 4,683 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Madison County?
- $54,434 for the county as a whole. Its ZIP codes range from $42,426 (63620) to $87,825 (63621).
- Which Madison County ZIP code has the highest median household income?
- 63621, at $87,825, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Madison County?
- For the 5 of 5 ZIP codes in EDDM2GO's stored route library: 19 carrier routes reaching 7,240 residential and 348 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.