Residential delivery area · Illinois
ZIP Code 61356: Princeton, IL
ZIP code 61356 uses the postal name Princeton, Illinois and lies entirely in Bureau County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $68,243 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Princeton (4%), Dover (under 1%) and Hollowayville (0%), and under 1% in smaller places; 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Princeton · its only residential ZIP
- County
- Bureau County
- Census places
- Princeton (4%); Dover (under 1%); Hollowayville (0%)
- Micro area
- Ottawa, IL
- House districts
- IL-16 (67%), IL-14 (33%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 189.6 sq mi · 57 people per sq mi
Where is ZIP code 61356?
61356 centers on 41.389°, -89.440° and covers 189.6 square miles of land plus 2.1 of water. It borders 12 ZIP codes: 61323, 61315, 61337, 61379, 61322, 61359, 61368, 61349, 61362, 61312 and more.
The map draws ZIP code areas only. For the streets inside 61356, 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 61356 compare with the rest of Bureau County?
| Measure | 61356 | In Bureau County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 10,799 | 2nd of 31 | 353rd of 1,396 |
| Median household income | $68k | 7th of 14 | 540th of 797 |
| Median home value | $153k | 4th of 15 | 546th of 842 |
Its median household income is higher than in 44% of U.S. residential ZIP codes, and it is denser than 45% 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 61356?
The 2020 Census counted 10,915 people in 61356; the ACS, which samples households over 2020-2024, estimates 10,799. Between the 2010 and 2020 censuses its population fell 3.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,799
- 2020 Census count
- 10,915−3.2% since 2010 (11,281)
- Households
- 4,798
- Median age
- 46.8
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 61356?
Of the 10,799 people the ACS estimates in 61356, 18.6% are under 18 and 26.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.0%).
- Under 1818.6%
- 18 to 6455.2%
- 65 and older26.2%
- White, not Hispanic88.0%
- Other or two or more5.1%
- Hispanic or Latino4.7%
- Asian, not Hispanic1.4%
- Black, 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 61356 earn?
Median household income is $68,243 (ACS 2020-2024), the 7th highest of the 14 ranked ZIP codes in Bureau County. It is not measurably different from 2015-2019 ($73,444 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $68,243
- Income per person
- $41,434
- Below the poverty line
- 11.9%
- Unemployed (of the labor force)
- 5.1%
- Adults 25+ with a bachelor's degree
- 28.5%
- Adjusted gross income per tax return, 2022
- $73,0465,340 returns; wages 60% 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 61356?
FHFA's house price index for 61356, built from repeat sales and appraisals of the same homes, rose 59% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +7.9% in 2025.
- Median home value (owners' estimate)
- $152,900
- Median gross rent
- $794
- Homes owned by their occupants
- 72.9%
- Housing units
- 5,220
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 61356?
322 business establishments had a location in this ZIP code in 2023, 23 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade47
- Accommodation and food services44
- Other services (except public administration)44
- Health care and social assistance38
- Finance and insurance24
- Professional, scientific, and technical services21
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 61356?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61323 | Dover | 125 | $48k | 3.9 mi |
| 61315 | Bureau | 264 | $57k | 8.1 mi |
| 61337 | Malden | 558 | $79k | 8.5 mi |
| 61379 | Wyanet | 1,260 | $64k | 8.7 mi |
| 61322 | Depue | 1,530 | $66k | 8.7 mi |
| 61359 | Seatonville | 369 | $53k | 8.9 mi |
| 61368 | Tiskilwa | 1,273 | $88k | 9.7 mi |
| 61349 | Ohio | 1,151 | $71k | 11.0 mi |
| 61362 | Spring Valley | 5,764 | $72k | 11.5 mi |
| 61312 | Arlington | 392 | $81k | 11.5 mi |
| 61330 | La Moille | 1,182 | $69k | 13.1 mi |
| 61327 | Hennepin | 1,442 | $89k | 13.2 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.