DeKalb County, Tennessee ZIP codes
4 ZIP codes are in DeKalb County, plus 7 that cross in from neighboring counties.
- ZIP codes
- 4
- Population in these ZIPs
- 21,136
- Avg. median income
- $53,200population-weighted
- Cities & towns
- 4
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ZIP codes in DeKalb County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 37012 | Alexandria | 2,118 | $49,265 | $289,900 |
| 37059 | Dowelltown | 1,590 | $49,510 | $260,400 |
| 37095 | Liberty | 1,697 | $64,792 | $282,700 |
| 37166 | Smithville | 15,731 | $52,797 | $284,700 |
ZIP codes partly in DeKalb County
These ZIP codes are mostly in a neighboring county but cover part of DeKalb County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 38544 | Baxter | Putnam County | 8,175 | $69,823 | $295,400 |
| 38548 | Buffalo Valley | Putnam County | 1,154 | — | $286,700 |
| 38567 | Hickman | Smith County | 1,065 | $100,368 | $315,600 |
| 38569 | Lancaster | Smith County | 390 | — | $434,700 |
| 38581 | Rock Island | Warren County | 4,079 | $55,985 | $248,600 |
| 38582 | Silver Point | Putnam County | 1,729 | $93,333 | $362,600 |
| 38583 | Sparta | White County | 25,584 | $54,644 | $279,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in DeKalb County
Nearby counties
Frequently asked questions
How many ZIP codes are in DeKalb County, Tennessee?
4 ZIP codes are mainly in DeKalb County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in DeKalb County?
ZIP codes in DeKalb County use the city names Alexandria, Dowelltown, Liberty and Smithville.