DeKalb County, Indiana ZIP codes
8 ZIP codes are in DeKalb County, plus 6 that cross in from neighboring counties. It's part of the Auburn, IN micro area.
- ZIP codes
- 8
- Population in these ZIPs
- 46,914
- Avg. median income
- $77,100population-weighted
- Cities & towns
- 8
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in DeKalb County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 46705 | Ashley | 1,972 | $67,266 | $201,400 |
| 46706 | Auburn | 20,403 | $80,965 | $282,400 |
| 46721 | Butler | 4,739 | $68,580 | $210,400 |
| 46730 | Corunna | 1,299 | $116,181 | $324,100 |
| 46738 | Garrett | 8,533 | $57,545 | $211,100 |
| 46785 | Saint Joe | 1,491 | $63,250 | $313,100 |
| 46788 | Spencerville | 4,373 | $101,553 | $466,400 |
| 46793 | Waterloo | 4,104 | $79,949 | $256,300 |
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 |
|---|---|---|---|---|---|
| 46710 | Avilla | Noble County | 4,506 | $84,408 | $286,900 |
| 46742 | Hamilton | Steuben County | 3,292 | $78,750 | $366,800 |
| 46747 | Hudson | Steuben County | 2,388 | $75,662 | $269,500 |
| 46748 | Huntertown | Allen County | 6,902 | $109,375 | $352,800 |
| 46755 | Kendallville | Noble County | 15,441 | $66,717 | $228,600 |
| 46763 | Laotto | Noble County | 1,444 | $97,054 | $356,500 |
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, Indiana?
8 ZIP codes are mainly in DeKalb County, and 6 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 Ashley, Auburn, Butler, Corunna, Garrett, Saint Joe, Spencerville and Waterloo.
What metro area is DeKalb County in?
DeKalb County is part of the Auburn, IN micropolitan statistical area.