ZIP Code 62305

62305 is one of Illinois's ZIP codes, delivering to addresses in Quincy, Adams County.

City: Quincy
County: Adams County
State: Illinois
Prefix: 623xx

Where this code sits

62305 is part of the 623xx range, the group of codes handled by one mail processing centre. Quincy is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Quincy page.

Quincy Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 62305 delivers to without sharing its boundary.

ZIP codes nearest 62305

The ZIP codes whose reference points sit closest to 62305.
ZIP code	Distance	Delivers to
ZIP code 62338	3.8 mi	Fowler, IL
ZIP code 62301	4.4 mi	Quincy, IL
ZIP code 62306	5.9 mi	Quincy, IL
ZIP code 62359	7.4 mi	Paloma, IL
ZIP code 62351	8.7 mi	Mendon, IL
ZIP code 62376	9.1 mi	Ursa, IL
ZIP code 62325	9.4 mi	Coatsburg, IL
ZIP code 62360	10 mi	Payson, IL

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 62305, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 62305. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.