Residential delivery area · Illinois
ZIP Code 61051: Milledgeville, IL
ZIP code 61051 uses the postal name Milledgeville, Illinois and lies mostly in Carroll County (96% of its land) with the rest in Ogle County (Census 2020 ZIP-county file). About 1,500 people live there (Census Bureau, ACS 2020-2024). Median household income is $59,565 (Census Bureau, ACS 2020-2024). By Census place, 1% of its land lies in Milledgeville; 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Milledgeville · its only residential ZIP
- County
- Carroll County (96%); Ogle County (4%)
- Census places
- Milledgeville
- House districts
- IL-17 (96%), IL-16 (4%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 50.7 sq mi · 29 people per sq mi
Where is ZIP code 61051?
61051 centers on 41.983°, -89.762° and covers 50.7 square miles of land. It borders 4 ZIP codes: 61014, 61046, 61064, 61081.
The map draws ZIP code areas only. For the streets inside 61051, 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 61051 compare with the rest of Carroll County?
| Measure | 61051 | In Carroll County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 1,469 | 8th of 10 | 766th of 1,396 |
| Median household income | $60k | 9th of 10 | 671st of 797 |
| Median home value | $104k | 8th of 10 | 743rd of 842 |
Its median household income is higher than in 28% of U.S. residential ZIP codes, and it is denser than 32% 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 61051?
The 2020 Census counted 1,444 people in 61051; the ACS, which samples households over 2020-2024, estimates 1,469. Between the 2010 and 2020 censuses its population fell 8.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,469±233 (90% margin)
- 2020 Census count
- 1,444−8.3% since 2010 (1,574)
- Households
- 656
- Median age
- 39.8
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 61051?
Of the 1,469 people the ACS estimates in 61051, 23.7% are under 18 and 21.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.2%).
- Under 1823.7%
- 18 to 6454.4%
- 65 and older21.9%
- White, not Hispanic96.2%
- Hispanic or Latino3.1%
- Other or two or more0.6%
- Black, not Hispanic0.1%
- Asian, not Hispanic0.0%
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 61051 earn?
Median household income is $59,565 (ACS 2020-2024), the 9th highest of the 10 ranked ZIP codes in Carroll County. It is not measurably different from 2015-2019 ($73,619 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $59,565±$11,585
- Income per person
- $32,528
- Below the poverty line
- 9.3%
- Unemployed (of the labor force)
- 4.5%
- Adults 25+ with a bachelor's degree
- 19.4%
- Adjusted gross income per tax return, 2022
- $67,916760 returns; wages 64% 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 61051?
FHFA's house price index for 61051, built from repeat sales and appraisals of the same homes, rose 48% from 2015 to 2025 and rose 47% from 2020 to 2025.
- Median home value (owners' estimate)
- $104,200
- Median gross rent
- $550
- Homes owned by their occupants
- 84.1%
- Housing units
- 673
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 61051?
48 business establishments had a location in this ZIP code in 2023, 6 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction9
- Wholesale trade5
- Retail trade5
- Accommodation and food services5
- Other services (except public administration)5
- Transportation and warehousing4
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 61051?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61014 | Chadwick | 1,067 | $69k | 6.4 mi |
| 61046 | Lanark | 2,794 | $79k | 8.8 mi |
| 61064 | Polo | 3,757 | $75k | 9.0 mi |
| 61081 | Sterling | 20,844 | $68k | 9.3 mi |
| 61091 | Woosung | 248 | – | 11.9 mi (near) |
| 61030 | Forreston | 2,194 | $72k | 12.9 mi (near) |
| 61078 | Shannon | 1,459 | $76k | 12.8 mi (near) |
| 61037 | Galt | 145 | $70k | 13.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.