ZIP code · Rock Island · Illinois · United States
ZIP code 61299 — Rock Island
ZIP code 61299 serves Rock Island, Illinois.
- Postal code
- 61299Single source Value from one source, not cross-checked.
- City
- Rock Island
- County
- Rock Island
- State
- Illinois
- Country
- United States
- Coordinates
- 41.5203, -90.5416 — precision precise (locality)
View on OpenStreetMap - USDA hardiness zone
- 5b (-15 to -10 °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
- 309Telephone 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 61299 with another ZIP · ZIPs within 25 miles · distance from 61299
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 13°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 36 | 48 | 61 | 72 | 81 | 84 | 82 | 77 | 64 | 49 | 36 |
| Avg low °F | 13 | 18 | 28 | 39 | 51 | 61 | 65 | 63 | 55 | 43 | 30 | 20 |
| Precip in | 1.5 | 1.8 | 2.6 | 3.8 | 5.1 | 5.2 | 4.2 | 4.0 | 3.3 | 2.9 | 2.3 | 2.0 |
NOAA 1991–2020 climate normals from the nearest station: ROCK ISLAND L&D 15 (1.2 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