Boundary Atlas

ZIP code 16438: Union City, PA

ZIP code 16438 is in Union City (39% of residents) and Canadohta Lake (6.7%), in Erie County (79%) and Crawford County (21%), Pennsylvania. 54% of its residents live outside city limits. It is in Pennsylvania's 16th congressional district. Its state senate districts are State Senate District 49 (79%), State Senate District 50 (21%) and State Senate District 21 (0.8%); its state house districts are State House District 4 (78%), State House District 65 (21%) and State House District 2 (1.7%).

7,504residents (2020 Census)
102.4 sq miland area
3cities and towns
1congressional district
11voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Union City39%
Canadohta Lake6.7%
Lincolnville0.2%

CountyShare of ZIP residents
Erie County79%
Crawford County21%

Town or county subdivisionShare of ZIP residents
Union City borough39%
Union township20%
Bloomfield township19%
Amity township11%
LeBoeuf township4.9%
Venango township2.2%
Rockdale township1.8%
Greene township1.7%
Wayne township0.7%
Waterford township0.5%

Congressional district

Congressional districtShare of ZIP residents
Pennsylvania's 16th congressional district (PA-16)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (PA-16)Mike Kelly (R)202-225-5406100%
U.S. SenatorDavid McCormick (R)202-224-6324 · contact formstatewide
U.S. SenatorJohn Fetterman (D)202-224-4254 · contact formstatewide
State Senator (State Senate District 49)Dan Laughlin (R)814-453-251579%
State Senator (State Senate District 50)Michele Brooks (R)724-654-144421%
State Senator (State Senate District 21)Scott Hutchinson (R)814-677-63450.8%
State Representative (State House District 4)Jake Banta (R)78%
State Representative (State House District 65)Kathy Rapp (R)814-723-520321%
State Representative (State House District 2)Bob Merski (Democratic)814-455-63191.7%

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 4979%
State Senate District 5021%
State Senate District 210.8%

State house districtShare of ZIP residents
State House District 478%
State House District 6521%
State House District 21.7%

Voting precincts

11 voting precincts overlap ZIP 16438. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:16438")

ZIP 16438 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.