ZIP code 28521: Cypress Creek, NC
ZIP code 28521 is in Chinquapin (4.1% of residents), in Duplin County (90%) and Onslow County (9.6%), North Carolina. 96% of its residents live outside city limits. It is in North Carolina's 3rd congressional district. Its state senate districts are State Senate District 9 (90%) and State Senate District 6 (9.6%); its state house districts are State House District 4 (90%) and State House District 15 (9.6%).
See it on the mapAll of North Carolina
City and county
| City or town | Share of ZIP residents |
|---|---|
| Chinquapin | 4.1% |
| County | Share of ZIP residents |
|---|---|
| Duplin County | 90% |
| Onslow County | 9.6% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Cypress Creek township | 77% |
| Limestone township | 13% |
| Richlands township | 9.6% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| North Carolina's 3rd congressional district (NC-03) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (NC-03) | Gregory F. Murphy (R) | 202-225-3415 | 100% |
| U.S. Senator | Ted Budd (R) | 202-224-3154 · contact form | statewide |
| U.S. Senator | Thom Tillis (R) | 202-224-6342 · contact form | statewide |
| State Senator (State Senate District 9) | Brent Jackson (R) | 90% | |
| State Senator (State Senate District 6) | Michael Lazzara (R) | 9.6% | |
| State Representative (State House District 4) | Jimmy Dixon (R) | 90% | |
| State Representative (State House District 15) | Phil Shepard (R) | 9.6% |
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
- Chinquapin laws: search for the Chinquapin, North Carolina code of ordinances
- Duplin County website: http://www.DuplinCountyNC.com
- Duplin County laws: search for the Duplin County, North Carolina code of ordinances
- Onslow County website: http://www.onslowcountync.gov
- Onslow County laws: search for the Onslow County, North Carolina code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 9 | 90% |
| State Senate District 6 | 9.6% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 4 | 90% |
| State House District 15 | 9.6% |
Voting precincts
5 voting precincts overlap ZIP 28521. 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:28521")
ZIP 28521 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.