Residential delivery area · Illinois
ZIP Code 62305: Quincy, IL
ZIP code 62305 uses the postal name Quincy, Illinois and lies entirely in Adams County (Census 2020 ZIP-county file). About 19,000 people live there (Census Bureau, ACS 2020-2024), the less populous of Quincy's 2 residential ZIP codes. Median household income is $83,598 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Bloomfield (under 1%) and Burton (under 1%), and 4% in smaller places; 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Quincy · 2 residential ZIPs
- County
- Adams County
- Census places
- Bloomfield (under 1%) census-designated place; Burton (under 1%) census-designated place
- Neighborhoods
- Holiday Hills, Meadowbrook, Northridge, Southern View GeoNames
- Micro area
- Quincy, IL-MO
- House district
- IL-15 119th Congress
- State
- Illinois
- Time zone
- Central
- Land area
- 139.3 sq mi · 137 people per sq mi
- PO Box ZIPs
- 62306 also use the name Quincy
Where is ZIP code 62305?
62305 centers on 39.928°, -91.344° and covers 139.3 square miles of land plus 8.1 of water. It borders 12 ZIP codes: 62301, 62338, 63471, 62360, 63448, 62376, 62351, 62347, 63461, 62320 and more.
The map draws ZIP code areas only. For the streets inside 62305, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 62305 compare with the rest of Quincy?
| Measure | 62305 | In Quincy | In Adams County | In IL |
|---|---|---|---|---|
| People (ACS 2020-2024) | 19,036 | 2nd of 2 | 2nd of 23 | 249th of 1,396 |
| Median household income | $84k | 1st of 2 | 3rd of 8 | 355th of 797 |
| Median home value | $214k | 1st of 2 | 3rd of 11 | 361st of 842 |
Its median household income is higher than in 66% of U.S. residential ZIP codes, and it is denser than 58% 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 62305?
The 2020 Census counted 19,042 people in 62305; the ACS, which samples households over 2020-2024, estimates 19,036. Between the 2010 and 2020 censuses its population grew 5.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 19,036
- 2020 Census count
- 19,042+5.5% since 2010 (18,052)
- Households
- 7,990
- Median age
- 46.4
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 62305?
Of the 19,036 people the ACS estimates in 62305, 22.3% are under 18 and 24.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.6%).
- Under 1822.3%
- 18 to 6453.3%
- 65 and older24.3%
- White, not Hispanic94.6%
- Other or two or more2.6%
- Hispanic or Latino1.3%
- Black, not Hispanic1.2%
- 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 62305 earn?
Median household income is $83,598 (ACS 2020-2024), the 3rd highest of the 8 ranked ZIP codes in Adams County. It is not measurably different from 2015-2019 ($89,374 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $83,598
- Income per person
- $45,435
- Below the poverty line
- 7.2%
- Unemployed (of the labor force)
- 1.8%
- Adults 25+ with a bachelor's degree
- 35.0%
- Adjusted gross income per tax return, 2022
- $99,1029,410 returns; wages 59% 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 62305?
FHFA's house price index for 62305, built from repeat sales and appraisals of the same homes, rose 55% from 2015 to 2025 and rose 43% from 2020 to 2025, and moved +13.1% in 2025.
- Median home value (owners' estimate)
- $213,600
- Median gross rent
- $926
- Homes owned by their occupants
- 84.7%
- Housing units
- 8,405
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 62305?
477 business establishments had a location in this ZIP code in 2023, 14 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade75
- Construction74
- Other services (except public administration)55
- Accommodation and food services34
- Manufacturing33
- Administrative and support and waste management and remediation services33
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 62305?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 62301 | Quincy | 30,746 | $52k | 2.4 mi |
| 62338 | Fowler | 1,075 | $92k | 7.5 mi |
| 63471 | Taylor, MO | 770 | $103k | 8.1 mi |
| 62360 | Payson | 1,605 | $55k | 8.8 mi |
| 63448 | La Grange, MO | 1,760 | $61k | 12.1 mi |
| 62376 | Ursa | 1,276 | $58k | 13.3 mi |
| 62351 | Mendon | 1,928 | $77k | 13.4 mi |
| 62347 | Liberty | 1,977 | $94k | 14.1 mi |
| 63461 | Palmyra, MO | 5,446 | $70k | 14.2 mi |
| 62320 | Camp Point | 2,667 | $77k | 15.5 mi |
| 62343 | Hull | 611 | $61k | 16.8 mi |
| 62379 | Warsaw | 1,854 | $62k | 23.8 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.