Quincy, IL ZIP codes

Quincy, Illinois has 3 ZIP codes, including 1 PO Box ZIP. They are in Adams County.

Population in these ZIPs: 49,782
Avg. median income: $64,100population-weighted
Typical home value: $187,500population-weighted
Metro area: Quincy, IL-MO

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Quincy, IL ZIP codes list

Quincy, IL ZIP codes
ZIP code	County	Population	Median income	Typical home value
62301	Adams County	30,746	$52,055	$141,700
62305	Adams County	19,036	$83,598	$261,500
62306 PO Box	Adams County	—	—	—

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Quincy

Fowler 9 mi
Payson 10 mi
Paloma 12 mi
Ursa 13 mi
Mendon 14 mi
Coatsburg 14 mi
Plainville 15 mi
Liberty 16 mi
Camp Point 17 mi
Lima 18 mi
Hull 18 mi
Loraine 19 mi

Frequently asked questions

What is the ZIP code for Quincy, IL?

Quincy, IL has 3 ZIP codes: 62301, 62305 and 62306.

What county is Quincy, Illinois in?

Quincy ZIP codes are in Adams County.

Which Quincy ZIP codes are PO Boxes?

62306 is a PO Box or single-organization ZIP code; it has no residential delivery area.