Zip Code 37640 — Butler, TN
37640 is a ZIP Code associated with Butler, TN, located within Johnson. 37640 ranks #2 out of 5 ZIP codes in Johnson County by population (and #342 out of 636 in TN). The area supports an estimated population of 3,851 residents across Data Pending housing units, with a population density of 14.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (36.330230, -81.977300)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 37640 |
| Primary City | Butler |
| State / Province | TN |
| County | Johnson |
| Total Population | 3,851 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 14.2 people/sq mi |
| Timezone | America/New_York |
How 37640 Compares
| Metric | ZIP 37640 | Johnson County | TN State Average |
|---|
| Population | 3,851 | 19,304 (Total) | 7,058,868 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 14.2 /sq mi | -- | -- |
| County Pop Rank | #2 of 5 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →