Boundary Atlas

ZIP code 28478: Union, NC

ZIP code 28478 is in Watha (4.2% of residents), in Pender County (93%), Sampson County (6.6%) and Duplin County (0.6%), North Carolina. 96% of its residents live outside city limits. It is in North Carolina's 7th congressional district (93%) and North Carolina's 3rd congressional district (7.2%). Its state senate district is State Senate District 9; its state house districts are State House District 16 (93%), State House District 22 (6.6%) and State House District 4 (0.6%).

4,274residents (2020 Census)
122.9 sq miland area
1cities and towns
2congressional districts
5voting precincts

See it on the mapAll of North Carolina

City and county

City or townShare of ZIP residents
Watha4.2%

CountyShare of ZIP residents
Pender County93%
Sampson County6.6%
Duplin County0.6%

Town or county subdivisionShare of ZIP residents
Union township65%
Columbia township19%
Burgaw township8.8%
Franklin township6.6%
Rockfish township0.6%

Congressional districts

Congressional districtShare of ZIP residents
North Carolina's 7th congressional district (NC-07)93%
North Carolina's 3rd congressional district (NC-03)7.2%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NC-07)David Rouzer (R)202-225-273193%
U.S. Representative (NC-03)Gregory F. Murphy (R)202-225-34157.2%
U.S. SenatorTed Budd (R)202-224-3154 · contact formstatewide
U.S. SenatorThom Tillis (R)202-224-6342 · contact formstatewide
State Senator (State Senate District 9)Brent Jackson (R)100%
State Representative (State House District 16)Carson Smith (R)93%
State Representative (State House District 22)William Brisson (R)6.6%
State Representative (State House District 4)Jimmy Dixon (R)0.6%

Elected in 2024 under NC's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

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 9100%

State house districtShare of ZIP residents
State House District 1693%
State House District 226.6%
State House District 40.6%

Voting precincts

5 voting precincts overlap ZIP 28478. Map them, with each precinct's share of the ZIP's residents.

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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:28478")

ZIP 28478 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.