Residential delivery area · Illinois
ZIP Code 61350: Ottawa, IL
ZIP code 61350 uses the postal name Ottawa, Illinois and lies entirely in LaSalle County (Census 2020 ZIP-county file). About 24,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $77,921 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Ottawa (10%), Dayton (1%) and Naplate (under 1%); 89% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Ottawa · its only residential ZIP
- County
- LaSalle County
- Census places
- Ottawa (10%); Dayton (1%) census-designated place; Naplate (under 1%)
- Micro area
- Ottawa, IL
- House districts
- IL-14 (86%), IL-16 (14%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 152.5 sq mi · 155 people per sq mi
Where is ZIP code 61350?
61350 centers on 41.372°, -88.865° and covers 152.5 square miles of land plus 5.7 of water. It borders 9 ZIP codes: 60557, 61373, 61341, 61325, 61348, 60549, 60551, 60518, 61364.
The map draws ZIP code areas only. For the streets inside 61350, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 61350 compare with the rest of LaSalle County?
| Measure | 61350 | In LaSalle County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 23,713 | 1st of 28 | 203rd of 1,396 |
| Median household income | $78k | 8th of 14 | 417th of 797 |
| Median home value | $165k | 9th of 16 | 488th of 842 |
Its median household income is higher than in 59% of U.S. residential ZIP codes, and it is denser than 60% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 61350?
The 2020 Census counted 23,997 people in 61350; the ACS, which samples households over 2020-2024, estimates 23,713. Between the 2010 and 2020 censuses its population fell 1.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 23,713
- 2020 Census count
- 23,997−1.0% since 2010 (24,246)
- Households
- 9,756
- Median age
- 42.2
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 61350?
Of the 23,713 people the ACS estimates in 61350, 24.1% are under 18 and 18.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.2%).
- Under 1824.1%
- 18 to 6457.6%
- 65 and older18.3%
- White, not Hispanic85.2%
- Hispanic or Latino8.4%
- Other or two or more3.6%
- Black, not Hispanic2.0%
- Asian, not Hispanic0.8%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 61350 earn?
Median household income is $77,921 (ACS 2020-2024), the 8th highest of the 14 ranked ZIP codes in LaSalle County. It rose from $67,374 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $77,921
- Income per person
- $42,813
- Below the poverty line
- 15.1%
- Unemployed (of the labor force)
- 6.3%
- Adults 25+ with a bachelor's degree
- 22.8%
- Adjusted gross income per tax return, 2022
- $73,75211,870 returns; wages 66% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 61350?
FHFA's house price index for 61350, built from repeat sales and appraisals of the same homes, rose 72% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +7.8% in 2025.
- Median home value (owners' estimate)
- $164,500
- Median gross rent
- $928
- Homes owned by their occupants
- 74.1%
- Housing units
- 10,681
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 61350?
658 business establishments had a location in this ZIP code in 2023, 17 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade97
- Accommodation and food services95
- Other services (except public administration)72
- Health care and social assistance68
- Professional, scientific, and technical services60
- Construction43
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 61350?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 60557 | Wedron | 0 | – | 7.2 mi |
| 61373 | Utica | 2,123 | $109k | 7.2 mi |
| 61341 | Marseilles | 7,692 | $73k | 9.0 mi |
| 61325 | Grand Ridge | 949 | $88k | 9.9 mi |
| 61348 | Oglesby | 4,375 | $76k | 10.7 mi |
| 60549 | Serena | 784 | $108k | 11.1 mi |
| 60551 | Sheridan | 5,058 | $87k | 14.0 mi |
| 60518 | Earlville | 3,289 | $70k | 15.9 mi |
| 61364 | Streator | 17,963 | $59k | 16.9 mi |
| 61301 | La Salle | 10,398 | $60k | 11.5 mi (near) |
| 61371 | Triumph | 83 | – | 11.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.