ZIP code 37640: District 4, TN
ZIP code 37640 is in Butler (8.1% of residents), in Johnson County (71%) and Carter County (29%), Tennessee. 92% of its residents live outside city limits. It is in Tennessee's 1st congressional district. Its state senate district is State Senate District 3; its state house district is State House District 3.
See it on the mapAll of Tennessee
City and county
| City or town | Share of ZIP residents |
|---|---|
| Butler | 8.1% |
| County | Share of ZIP residents |
|---|---|
| Johnson County | 71% |
| Carter County | 29% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 4 | 65% |
| District 6 | 29% |
| District 5 | 4.6% |
| District 3 | 1.7% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Tennessee's 1st congressional district (TN-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (TN-01) | Diana Harshbarger (R) | 202-225-6356 | 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 3) | Rusty Crowe (R) | 100% | |
| State Representative (State House District 3) | Timothy Hill (R) | 100% |
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
- Butler laws: search for the Butler, Tennessee code of ordinances
- Johnson County website: https://www.johnsoncountytn.gov/
- Johnson County laws: search for the Johnson County, Tennessee code of ordinances
- Carter County website: http://www.cartercountytn.gov
- Carter County laws: search for the Carter County, Tennessee code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 3 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 3 | 100% |
Voting precincts
6 voting precincts overlap ZIP 37640. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:37640")
ZIP 37640 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.