ZIP code · Oskaloosa · Kansas · United States
ZIP code 66066 — Oskaloosa
ZIP code 66066 serves Oskaloosa, Kansas.
- Postal code
- 66066Single source Value from one source, not cross-checked.
- City
- Oskaloosa
- County
- Jefferson FIPS 20087
- State
- Kansas
- Country
- United States
- Coordinates
- 39.2152, -95.3135 — precision precise (locality)
View on OpenStreetMap - Population
- 2,750 (ZCTA, ACS 5-year)
- Population density
- 36 / sq mi
- Land area
- 77.2 sq mi (200 km²) (ZCTA, ACS 5-year)
- Median household income
- $76,733
- Per-capita income
- $40,868
- Median age
- 36
- Households
- 1,123
- Housing units
- 1,158
- Median home value
- $215,100
- Median gross rent
- $852 / month
- Congressional district
- KS-1 (119th Congress)
- USDA hardiness zone
- 6b (-5 to 0 °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 66066 with another ZIP · ZIPs within 25 miles · distance from 66066
Map of ZIP code 66066
Climate — monthly normals
Warmest month Jul (avg high 90°F), coldest Jan (avg low 18°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 45 | 56 | 66 | 76 | 85 | 90 | 88 | 80 | 68 | 54 | 42 |
| Avg low °F | 18 | 22 | 31 | 42 | 54 | 64 | 68 | 66 | 57 | 44 | 32 | 22 |
| Precip in | 1.0 | 1.3 | 2.5 | 3.5 | 5.3 | 5.4 | 4.5 | 4.8 | 3.4 | 2.9 | 2.0 | 1.8 |
NOAA 1991–2020 climate normals from the nearest station: OSKALOOSA 4 NE (2.9 mi) · NOAA NCEI
Places in ZIP 66066
- 6 schools
- 1 supermarkets
- 1 restaurants & cafés
- 1 parks
- 4 playgrounds
- 4 gyms & sports centres
- 1 libraries
- 1 post offices
- 12 places of worship
- 1 gas stations
- 5 police & fire stations
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