Auburn, IN micro area ZIP codes
The Auburn, IN micropolitan statistical area (CBSA 12140) covers 1 county in Indiana and 8 ZIP codes.
- ZIP codes
- 8
- Population
- 46,914
- Avg. median income
- $77,100population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Auburn, IN area
ZIP codes in the Auburn, IN area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 46705 | Ashley | DeKalb County | 1,972 | $67,266 | $201,400 |
| 46706 | Auburn | DeKalb County | 20,403 | $80,965 | $282,400 |
| 46721 | Butler | DeKalb County | 4,739 | $68,580 | $210,400 |
| 46730 | Corunna | DeKalb County | 1,299 | $116,181 | $324,100 |
| 46738 | Garrett | DeKalb County | 8,533 | $57,545 | $211,100 |
| 46785 | Saint Joe | DeKalb County | 1,491 | $63,250 | $313,100 |
| 46788 | Spencerville | DeKalb County | 4,373 | $101,553 | $466,400 |
| 46793 | Waterloo | DeKalb County | 4,104 | $79,949 | $256,300 |
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
Frequently asked questions
How many ZIP codes are in the Auburn, IN micro area?
8 ZIP codes, based on each ZIP code's main county.
Which counties make up the Auburn, IN area?
DeKalb County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).