Caldwell County, MO ZIP Codes
9 ZIP codes cover all or part of Caldwell County, Missouri. The Census Bureau counts 8,927 residents in the county, with a median household income of $64,806 and a median home value of $166,500. Median household income ranges from $58,095 in 64624 to $80,552 in 64465. Its largest communities include Hamilton, Braymer, Kidder, Breckenridge and Polo.
Caldwell County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 8,927 |
| Households | 3,769 |
| Median household income | $64,806 |
| Median home value | $166,500 |
| Median age | 43.2 |
| Median rent | $640 |
All 9 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 24,503 |
| Households (sum of ZIP codes) | 9,185 |
| Median household income, range across ZIP codes | $58,095 (64624) to $80,552 (64465) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $71,540 |
| Homeowners | 71.8% |
| Households with kids under 18 | 29.7% |
| Moved in the past year | 11.7% |
| Carrier routes in EDDM2GO's route library | 6 routes, 2,110 homes (3 of 9 ZIP codes) |
Top facts
- Highest median household income in Caldwell County: 64465 ($80,552)
- Most residents: 64429 (11,449 people)
- Highest homeownership: 64671 (89.3% own their home)
- Most households with kids: 64644 (33.8% of households)
- Most new movers: 64644 (13.4% moved in last year)
- Youngest median age: 64644 (38.8 years)
- Highest median home value: 64429 ($206,600)
Every ZIP code in Caldwell County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 64429 | Cameron | 11,449 | 3,920 | $68,708 | $206,600 | 65.3% | 29.1% | 12.4% | — | — | 31% of its land |
| 64465 | Lathrop | 3,947 | 1,443 | $80,552 | $192,200 | 71.7% | 29.6% | 12.3% | — | — | 14% of its land |
| 64644 | Hamilton | 2,923 | 1,167 | $74,408 | $193,600 | 72.2% | 33.8% | 13.4% | 3 | 1,300 | 80% of its land |
| 64671 | Polo | 1,986 | 850 | $75,455 | $173,200 | 89.3% | 33.5% | 10.4% | — | — | 61% of its land |
| 64624 | Braymer | 1,489 | 638 | $58,095 | $95,500 | 82.1% | 25.9% | 7.6% | 2 | 640 | 49% of its land |
| 64649 | Kidder | 814 | 343 | $67,216 | $228,100 | 84.5% | 32.9% | 3.1% | — | — | 58% of its land |
| 64625 | Breckenridge | 738 | 322 | $35,000 | $64,300 | 59.0% | 29.2% | 6.7% | — | — | 66% of its land |
| 64650 | Kingston | 665 | 278 | $45,441 | $203,100 | 84.5% | 16.5% | 19.1% | 1 | 265 | 100% of its land |
| 64637 | Cowgill | 492 | 224 | $56,944 | $125,000 | 69.6% | 27.2% | 10.2% | — | — | 76% of its land |
A ZIP code is listed for Caldwell 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
- Hamilton — 1,755 residents · 1 ZIP code
- Braymer — 795 residents · 1 ZIP code
- Kidder — 501 residents · 1 ZIP code
- Breckenridge — 485 residents · 1 ZIP code
- Polo — 480 residents · 1 ZIP code
- Kingston — 271 residents · 1 ZIP code
- Cowgill — 176 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Caldwell County — 5 ZIP codes ranked
- ZIP codes with the highest home values in Caldwell County — 5 ZIP codes ranked
- ZIP codes with the highest homeownership in Caldwell County — 5 ZIP codes ranked
- ZIP codes with the most families with kids in Caldwell County — 5 ZIP codes ranked
- ZIP codes with the most new movers in Caldwell County — 5 ZIP codes ranked
- Youngest ZIP codes in Caldwell County — 5 ZIP codes ranked
- Oldest ZIP codes in Caldwell County — 5 ZIP codes ranked
- Fastest-growing ZIP codes in Caldwell County — 5 ZIP codes ranked
Price a mailing to Caldwell County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Caldwell County, MO?
- 64429, 64465, 64644, 64671, 64624, 64649, 64625, 64650 and 64637. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Caldwell County?
- 8,927 residents in 3,769 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Caldwell County?
- $64,806 for the county as a whole. Its ZIP codes range from $58,095 (64624) to $80,552 (64465).
- Which Caldwell County ZIP code has the highest median household income?
- 64465, at $80,552, among ZIP codes with at least 1,000 residents. See the full ranking of Caldwell County ZIP codes by income.
- How many carrier routes and mailboxes are in Caldwell County?
- For the 3 of 9 ZIP codes in EDDM2GO's stored route library: 6 carrier routes reaching 2,110 residential and 95 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.