Mercer County, MO ZIP Codes
6 ZIP codes cover all or part of Mercer County, Missouri: 64673, 64679, 64661, 64632, 64667 and 64645. The Census Bureau counts 3,482 residents in the county, with a median household income of $62,679 and a median home value of $104,900. Its largest communities include Princeton, Mercer, Cainsville, Ravanna and South Lineville.
Mercer County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 3,482 |
| Households | 1,302 |
| Median household income | $62,679 |
| Median home value | $104,900 |
| Median age | 42.4 |
| Median rent | $590 |
All 6 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 4,996 |
| Households (sum of ZIP codes) | 1,875 |
| Median household income, range across ZIP codes | $61,364 (64673) to $61,364 (64673) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $61,364 |
| Homeowners | 80.5% |
| Households with kids under 18 | 22.8% |
| Moved in the past year | 9.5% |
| Carrier routes in EDDM2GO's route library | 2 routes, 300 homes (1 of 6 ZIP codes) |
Every ZIP code in Mercer County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 64673 | Princeton | 2,497 | 888 | $61,364 | $101,600 | 80.7% | 25.0% | 13.4% | — | — | 100% of its land |
| 64679 | Spickard | 921 | 306 | $53,611 | $118,100 | 77.5% | 23.2% | 4.8% | — | — | 12% of its land |
| 64661 | Mercer | 757 | 326 | $54,122 | $73,800 | 77.9% | 21.5% | 8.2% | — | — | 100% of its land |
| 64632 | Cainsville | 371 | 163 | $50,313 | $79,600 | 85.3% | 18.4% | 3.2% | 2 | 305 | 59% of its land |
| 64667 | Newtown | 255 | 117 | $47,841 | $90,000 | 83.8% | 17.1% | 6.7% | — | — | 35% of its land |
| 64645 | Harris | 195 | 75 | $53,125 | — | 86.7% | 18.7% | 2.1% | — | — | 29% of its land |
A ZIP code is listed for Mercer 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
- Princeton — 1,352 residents · 1 ZIP code
- Mercer — 325 residents · 1 ZIP code
- Cainsville — 212 residents · 1 ZIP code
- Ravanna — 68 residents · 1 ZIP code
- South Lineville — 16 residents · 1 ZIP code
Price a mailing to Mercer County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Mercer County, MO?
- 64673, 64679, 64661, 64632, 64667 and 64645. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Mercer County?
- 3,482 residents in 1,302 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Mercer County?
- $62,679 for the county as a whole. Its ZIP codes range from $61,364 (64673) to $61,364 (64673).
- How many carrier routes and mailboxes are in Mercer County?
- For the 1 of 6 ZIP codes in EDDM2GO's stored route library: 2 carrier routes reaching 300 residential and 5 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.