Boundary Atlas

ZIP code 62305: Quincy, IL

ZIP code 62305 is in Quincy (44% of residents), in Adams County, Illinois. 56% of its residents live outside city limits. It is in Illinois's 15th congressional district. Its state senate district is State Senate District 50; its state house districts are State House District 99 (96%) and State House District 100 (3.8%).

19,042residents (2020 Census)
139.2 sq miland area
4cities and towns
1congressional district
31voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Quincy44%
Burton0.5%
Bloomfield0.2%
Columbus<0.1%

CountyShare of ZIP residents
Adams County100%

Town or county subdivisionShare of ZIP residents
Quincy township44%
Melrose township28%
Ellington township12%
Riverside township11%
Burton township2.6%
Fall Creek township1.2%
Gilmer township1.0%
Ursa township0.6%
Mendon township0.2%
Columbus township<0.1%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 15th congressional district (IL-15)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-15)Mary E. Miller (R)202-225-5271100%
U.S. SenatorRichard J. Durbin (D)202-224-2152 · contact formstatewide
U.S. SenatorTammy Duckworth (D)202-224-2854 · contact formstatewide
State Senator (State Senate District 50)Jil Tracy (R)217-223-0833100%
State Representative (State House District 99)Kyle Moore (R)217-223-083396%
State Representative (State House District 100)C.D. Davidsmeyer (R)618-639-20713.8%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 50100%

State house districtShare of ZIP residents
State House District 9996%
State House District 1003.8%

Voting precincts

31 voting precincts overlap ZIP 62305. Map them, with each precinct's share of the ZIP's residents.

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ZIP 62305 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.