ZIP code 37421: Chattanooga, TN
ZIP code 37421 is in Chattanooga (74% of residents), in Hamilton County, Tennessee. 26% of its residents live outside city limits. It is in Tennessee's 3rd congressional district. Its state senate districts are State Senate District 10 (91%) and State Senate District 11 (8.7%); its state house districts are State House District 30 (56%), State House District 29 (36%) and State House District 28 (7.7%).
See it on the mapAll of Tennessee
City and county
| City or town | Share of ZIP residents |
|---|---|
| Chattanooga | 74% |
| County | Share of ZIP residents |
|---|---|
| Hamilton County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 7 | 48% |
| District 8 | 24% |
| District 5 | 15% |
| District 10 | 12% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Tennessee's 3rd congressional district (TN-03) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (TN-03) | Charles J. "Chuck" Fleischmann (R) | 202-225-3271 | 100% |
| U.S. Senator | Bill Hagerty (R) | 202-224-4944 · contact form | statewide |
| U.S. Senator | Marsha Blackburn (R) | 202-224-3344 · contact form | statewide |
| State Senator (State Senate District 10) | Todd Gardenhire (R) | 91% | |
| State Senator (State Senate District 11) | Bo Watson (R) | 8.7% | |
| State Representative (State House District 30) | Esther Helton-Haynes (R) | 56% | |
| State Representative (State House District 29) | Greg Vital (R) | 36% | |
| State Representative (State House District 28) | Yusuf Hakeem (Democratic) | 7.7% | |
| State Representative (State House District 26) | Greg Martin (R) | <0.1% |
Elected in 2024 under TN'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
- Chattanooga website: https://www.chattanooga.gov
- Chattanooga laws: search for the Chattanooga, Tennessee code of ordinances
- Hamilton County website: http://www.hamiltontn.gov
- Hamilton County laws: search for the Hamilton County, Tennessee code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 10 | 91% |
| State Senate District 11 | 8.7% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 30 | 56% |
| State House District 29 | 36% |
| State House District 28 | 7.7% |
| State House District 26 | land only |
Voting precincts
16 voting precincts overlap ZIP 37421. 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:37421")
ZIP 37421 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.