ZIP code · Vermillion · Kansas · United States
ZIP code 66544 — Vermillion
ZIP code 66544 serves Vermillion, Kansas.
- Postal code
- 66544Single source Value from one source, not cross-checked.
- City
- Vermillion
- County
- Marshall FIPS 20117
- State
- Kansas
- Country
- United States
- Coordinates
- 39.6946, -96.2780 — precision precise (locality)
View on OpenStreetMap - Population
- 307 (ZCTA, ACS 5-year)
- Population density
- 3 / sq mi
- Land area
- 90.1 sq mi (233.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $92,813
- Per-capita income
- $46,833
- Median age
- 56.1
- Households
- 133
- Housing units
- 142
- Median home value
- $75,900
- Median gross rent
- $725 / month
- Congressional districts
- KS-1 (also KS-2) (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 785Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 66544 with another ZIP · ZIPs within 25 miles · distance from 66544
Map of ZIP code 66544
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 36 | 42 | 53 | 64 | 74 | 83 | 88 | 87 | 80 | 67 | 52 | 40 |
| Avg low °F | 15 | 19 | 28 | 39 | 51 | 61 | 65 | 62 | 53 | 40 | 29 | 19 |
| Precip in | 0.7 | 1.1 | 2.1 | 3.1 | 4.8 | 4.7 | 4.4 | 3.6 | 3.1 | 2.6 | 1.7 | 1.3 |
NOAA 1991–2020 climate normals from the nearest station: FRANKFORT 6NE (6.8 mi) · NOAA NCEI
Places in ZIP 66544
- 1 schools
- 1 parks
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page