Residential delivery area · Illinois
ZIP Code 61065: Poplar Grove, IL
ZIP code 61065 uses the postal name Poplar Grove, Illinois and lies entirely in Boone County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $97,386 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Poplar Grove (14%) and Candlewick Lake (4%), and under 1% in smaller places; 81% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Poplar Grove · its only residential ZIP
- County
- Boone County
- Census places
- Poplar Grove (14%); Candlewick Lake (4%) census-designated place
- Metro area
- Rockford, IL
- House districts
- IL-16 (98%), IL-11 (2%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 50.9 sq mi · 208 people per sq mi
Where is ZIP code 61065?
61065 centers on 42.401°, -88.837° and covers 50.9 square miles of land plus 0.4 of water. It borders 5 ZIP codes: 61011, 61012, 61080, 53525, 61008.
The map draws ZIP code areas only. For the streets inside 61065, 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 61065 compare with the rest of Boone County?
| Measure | 61065 | In Boone County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 10,570 | 8th of 15 | 360th of 1,396 |
| Median household income | $97k | 7th of 15 | 223rd of 797 |
| Median home value | $217k | 8th of 14 | 354th of 842 |
Its median household income is higher than in 79% of U.S. residential ZIP codes, and it is denser than 63% 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 61065?
The 2020 Census counted 11,206 people in 61065; the ACS, which samples households over 2020-2024, estimates 10,570. Between the 2010 and 2020 censuses its population grew 0.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,570
- 2020 Census count
- 11,206+0.4% since 2010 (11,156)
- Households
- 3,468
- Median age
- 35.7
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 61065?
Of the 10,570 people the ACS estimates in 61065, 27.2% are under 18 and 13.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (73.4%), then Hispanic or Latino (18.9%).
- Under 1827.2%
- 18 to 6459.4%
- 65 and older13.4%
- White, not Hispanic73.4%
- Hispanic or Latino18.9%
- Other or two or more4.9%
- Black, not Hispanic2.4%
- Asian, not Hispanic0.4%
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 61065 earn?
Median household income is $97,386 (ACS 2020-2024), the 7th highest of the 15 ranked ZIP codes in Boone County. It is not measurably different from 2015-2019 ($91,628 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $97,386±$16,504
- Income per person
- $34,795
- Below the poverty line
- 6.7%
- Unemployed (of the labor force)
- 5.9%
- Adults 25+ with a bachelor's degree
- 26.3%
- Adjusted gross income per tax return, 2022
- $76,4185,250 returns; wages 74% 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 61065?
FHFA's house price index for 61065, built from repeat sales and appraisals of the same homes, rose 83% from 2015 to 2025 and rose 57% from 2020 to 2025, and moved +0.6% in 2025.
- Median home value (owners' estimate)
- $217,300
- Median gross rent
- $1,452
- Homes owned by their occupants
- 92.6%
- Housing units
- 3,729
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 61065?
98 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction18
- Other services (except public administration)13
- Retail trade11
- Administrative and support and waste management and remediation services11
- Transportation and warehousing10
- Professional, scientific, and technical services10
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 61065?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61011 | Caledonia | 2,676 | $127k | 3.1 mi |
| 61012 | Capron | 2,264 | $99k | 3.7 mi |
| 61080 | South Beloit | 10,955 | $77k | 9.3 mi |
| 53525 | Clinton, WI | 4,066 | $79k | 9.9 mi |
| 61008 | Belvidere | 33,582 | $77k | 10.7 mi |
| 61073 | Roscoe | 20,194 | $102k | 8.2 mi (near) |
| 61111 | Loves Park | 23,286 | $61k | 9.6 mi (near) |
| 61115 | Machesney Park | 22,364 | $75k | 9.9 mi (near) |
| 61114 | Rockford | 15,325 | $86k | 10.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.