Residential delivery area · Illinois
ZIP Code 61728: Colfax, IL
ZIP code 61728 uses the postal name Colfax, Illinois and lies entirely in McLean County (Census 2020 ZIP-county file). About 1,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $97,159 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Colfax; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Colfax · its only residential ZIP
- County
- McLean County
- Census places
- Colfax
- Metro area
- Bloomington, IL
- House district
- IL-16 119th Congress
- State
- Illinois
- Time zone
- Central
- Land area
- 69.4 sq mi · 20 people per sq mi
Where is ZIP code 61728?
61728 centers on 40.581°, -88.622° and covers 69.4 square miles of land plus 0.0 of water. It borders 8 ZIP codes: 61720, 61730, 61753, 61737, 61722, 61770, 61739, 61726.
The map draws ZIP code areas only. For the streets inside 61728, 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 61728 compare with the rest of McLean County?
| Measure | 61728 | In McLean County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 1,359 | 20th of 33 | 797th of 1,396 |
| Median household income | $97k | 10th of 22 | 225th of 797 |
| Median home value | $155k | 21st of 25 | 532nd of 842 |
Its median household income is higher than in 79% of U.S. residential ZIP codes, and it is denser than 26% 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 61728?
The 2020 Census counted 1,381 people in 61728; the ACS, which samples households over 2020-2024, estimates 1,359. Between the 2010 and 2020 censuses its population fell 2.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,359±202 (90% margin)
- 2020 Census count
- 1,381−2.1% since 2010 (1,410)
- Households
- 491
- Median age
- 36.6
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 61728?
Of the 1,359 people the ACS estimates in 61728, 30.2% are under 18 and 20.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.2%).
- Under 1830.2%
- 18 to 6449.5%
- 65 and older20.2%
- White, not Hispanic89.2%
- Other or two or more6.1%
- Hispanic or Latino2.3%
- Black, not Hispanic2.2%
- Asian, not Hispanic0.2%
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 61728 earn?
Median household income is $97,159 (ACS 2020-2024), the 10th highest of the 22 ranked ZIP codes in McLean County. It rose from $75,035 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $97,159±$16,186
- Income per person
- $47,640
- Below the poverty line
- 11.7%
- Unemployed (of the labor force)
- 5.0%
- Adults 25+ with a bachelor's degree
- 27.5%
- Adjusted gross income per tax return, 2022
- $79,146650 returns; wages 65% 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 61728?
FHFA's house price index for 61728, built from repeat sales and appraisals of the same homes, rose 88% from 2015 to 2025 and rose 81% from 2020 to 2025, and moved +21.4% in 2025.
- Median home value (owners' estimate)
- $155,200
- Median gross rent
- $875
- Homes owned by their occupants
- 77.2%
- Housing units
- 530
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 61728?
31 business establishments had a location in this ZIP code in 2023, 3 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction6
- Transportation and warehousing5
- Other services (except public administration)5
- Wholesale trade4
- Finance and insurance3
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 61728?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61720 | Anchor | 374 | $91k | 6.6 mi |
| 61730 | Cooksville | 361 | $77k | 6.8 mi |
| 61753 | Lexington | 2,833 | $104k | 9.3 mi |
| 61737 | Ellsworth | 416 | $84k | 10.4 mi |
| 61722 | Arrowsmith | 658 | $111k | 10.9 mi |
| 61770 | Saybrook | 1,067 | $61k | 11.4 mi |
| 61739 | Fairbury | 4,628 | $77k | 11.5 mi |
| 61726 | Chenoa | 2,546 | $78k | 11.5 mi |
| 61731 | Cropsey | 76 | – | 7.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.