ZIP code · Ottawa · Illinois · United States
ZIP code 61350 — Ottawa
ZIP code 61350 serves Ottawa, Illinois.
- Postal code
- 61350Single source Value from one source, not cross-checked.
- City
- Ottawa
- County
- LaSalle FIPS 17099
- State
- Illinois
- Country
- United States
- Coordinates
- 41.3526, -88.8416 — precision precise (locality)
View on OpenStreetMap - Population
- 23,999 (ZCTA, ACS 5-year)
- Population density
- 157 / sq mi
- Land area
- 152.5 sq mi (395.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $77,562
- Per-capita income
- $41,425
- Median age
- 42.3
- Households
- 9,748
- Housing units
- 10,853
- Median home value
- $157,100
- Median gross rent
- $940 / month
- Congressional districts
- IL-14 (also IL-16) (119th Congress)
- 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
- 815Telephone 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 61350 with another ZIP · ZIPs within 25 miles · distance from 61350
Map of ZIP code 61350
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 35 | 48 | 61 | 72 | 80 | 83 | 82 | 76 | 64 | 49 | 36 |
| Avg low °F | 15 | 19 | 29 | 39 | 51 | 61 | 64 | 62 | 54 | 43 | 32 | 21 |
| Precip in | 1.8 | 1.5 | 2.3 | 3.5 | 4.5 | 4.4 | 3.6 | 3.7 | 3.2 | 3.1 | 2.5 | 2.0 |
NOAA 1991–2020 climate normals from the nearest station: OTTAWA 5SW (4.0 mi) · NOAA NCEI
Places in ZIP 61350
- 12 schools
- 3 hospitals & clinics
- 1 doctors & dentists
- 6 supermarkets
- 40 restaurants & cafés
- 7 bars & pubs
- 15 parks
- 15 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 29 places of worship
- 10 banks
- 14 gas stations
- 1 EV charging 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