ZIP code · Topeka · Kansas · United States
ZIP code 66620 — Topeka
ZIP code 66620 serves Topeka, Kansas.
- Postal code
- 66620Single source Value from one source, not cross-checked.
- City
- Topeka
- County
- Shawnee
- State
- Kansas
- Country
- United States
- Coordinates
- 39.0429, -95.7697 — precision precise (locality)
View on OpenStreetMap - 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 66620 with another ZIP · ZIPs within 25 miles · distance from 66620
Climate — monthly normals
Warmest month Jul (avg high 89°F), coldest Jan (avg low 19°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 56 | 67 | 76 | 85 | 89 | 87 | 80 | 69 | 55 | 43 |
| Avg low °F | 19 | 23 | 33 | 43 | 55 | 64 | 68 | 66 | 57 | 44 | 32 | 23 |
| Precip in | 0.9 | 1.3 | 2.2 | 3.9 | 5.3 | 5.0 | 4.2 | 4.4 | 3.5 | 2.9 | 2.0 | 1.5 |
NOAA 1991–2020 climate normals from the nearest station: TOPEKA - NWS (7.8 mi) · NOAA NCEI
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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page