Residential delivery area · Illinois
ZIP Code 61310: Amboy, IL
ZIP code 61310 uses the postal name Amboy, Illinois and lies entirely in Lee County (Census 2020 ZIP-county file). About 3,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $69,756 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Amboy (4%) and Lee Center (under 1%); 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Amboy · its only residential ZIP
- County
- Lee County
- Census places
- Amboy (4%); Lee Center (under 1%) census-designated place
- Micro area
- Dixon, IL
- House district
- IL-16 119th Congress
- State
- Illinois
- Time zone
- Central
- Land area
- 108.6 sq mi · 31 people per sq mi
Where is ZIP code 61310?
61310 centers on 41.702°, -89.355° and covers 108.6 square miles of land plus 0.5 of water. It borders 7 ZIP codes: 61331, 61367, 61031, 61378, 61042, 61021, 61349.
The map draws ZIP code areas only. For the streets inside 61310, 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 61310 compare with the rest of Lee County?
| Measure | 61310 | In Lee County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 3,347 | 7th of 24 | 549th of 1,396 |
| Median household income | $70k | 7th of 13 | 522nd of 797 |
| Median home value | $166k | 2nd of 14 | 479th of 842 |
Its median household income is higher than in 46% of U.S. residential ZIP codes, and it is denser than 33% 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 61310?
The 2020 Census counted 3,700 people in 61310; the ACS, which samples households over 2020-2024, estimates 3,347. Between the 2010 and 2020 censuses its population fell 6.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,347
- 2020 Census count
- 3,700−6.8% since 2010 (3,970)
- Households
- 1,451
- Median age
- 50.4
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 61310?
Of the 3,347 people the ACS estimates in 61310, 15.1% are under 18 and 24.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.9%).
- Under 1815.1%
- 18 to 6460.2%
- 65 and older24.6%
- White, not Hispanic92.9%
- Hispanic or Latino3.4%
- Other or two or more2.7%
- Black, not Hispanic1.0%
- 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 61310 earn?
Median household income is $69,756 (ACS 2020-2024), the 7th highest of the 13 ranked ZIP codes in Lee County. It is not measurably different from 2015-2019 ($71,064 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $69,756±$7,939
- Income per person
- $37,248
- Below the poverty line
- 10.6%
- Unemployed (of the labor force)
- 8.2%
- Adults 25+ with a bachelor's degree
- 10.8%
- Adjusted gross income per tax return, 2022
- $69,3501,810 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 61310?
FHFA's house price index for 61310, built from repeat sales and appraisals of the same homes, rose 47% from 2015 to 2025 and rose 34% from 2020 to 2025, and moved +2.6% in 2025.
- Median home value (owners' estimate)
- $165,800
- Median gross rent
- $847
- Homes owned by their occupants
- 79.5%
- Housing units
- 1,631
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 61310?
67 business establishments had a location in this ZIP code in 2023, 2 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services10
- Other services (except public administration)9
- Wholesale trade8
- Retail trade8
- Health care and social assistance7
- Construction6
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 61310?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61331 | Lee Center | 0 | – | 5.1 mi |
| 61367 | Sublette | 843 | $61k | 7.4 mi |
| 61031 | Franklin Grove | 1,492 | $75k | 9.0 mi |
| 61378 | West Brooklyn | 513 | $85k | 10.4 mi |
| 61042 | Harmon | 404 | $71k | 10.6 mi |
| 61021 | Dixon | 22,308 | $69k | 10.8 mi |
| 61349 | Ohio | 1,151 | $71k | 11.4 mi |
| 61324 | Eldena | 97 | – | 5.6 mi (near) |
| 61057 | Nachusa | 30 | – | 9.2 mi (near) |
| 61374 | Van Orin | 56 | $59k | 10.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.