ZIP code 37405: Chattanooga, TN
ZIP code 37405 is in Chattanooga (88% of residents) and Red Bank (6.8%), in Hamilton County (95%) and Marion County (4.8%), Tennessee. 5.4% of its residents live outside city limits. It is in Tennessee's 3rd congressional district (95%) and Tennessee's 4th congressional district (4.8%). Its state senate districts are State Senate District 11 (75%) and State Senate District 10 (25%); its state house districts are State House District 26 (38%), State House District 27 (37%), State House District 28 (21%) and State House District 39 (4.8%).
See it on the mapAll of Tennessee
City and county
| City or town | Share of ZIP residents |
|---|---|
| Chattanooga | 88% |
| Red Bank | 6.8% |
| County | Share of ZIP residents |
|---|---|
| Hamilton County | 95% |
| Marion County | 4.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 6 | 73% |
| District 2 | 22% |
| District 4 | 4.8% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Tennessee's 3rd congressional district (TN-03) | 95% |
| Tennessee's 4th congressional district (TN-04) | 4.8% |
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.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 11 | 75% |
| State Senate District 10 | 25% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 26 | 38% |
| State House District 27 | 37% |
| State House District 28 | 21% |
| State House District 39 | 4.8% |
Voting precincts
11 voting precincts overlap ZIP 37405. 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:37405")
ZIP 37405 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.