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County ZIP codes · Indiana · FIPS 18033

DeKalb County, IN ZIP Codes

DeKalb County, Indiana has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in DeKalb County and 6 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $57,545 in 46738 (Garrett) to $116,181 in 46730 (Corunna) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of DeKalb County?

46705 · Ashley: $67k46706 · Auburn: $81k46710 · Avilla: $84k46721 · Butler: $69k46730 · Corunna: $116k46738 · Garrett: $58k46742 · Hamilton: $79k46747 · Hudson: $76k46748 · Huntertown: $109k46755 · Kendallville: $67k46763 · Laotto: $97k46785 · Saint Joe: $63k46788 · Spencerville: $102k46793 · Waterloo: $80k467064672146755467934674746742467104678846763467854670546730467384674846705 · Ashley: $67k46706 · Auburn: $81k46710 · Avilla: $84k46721 · Butler: $69k46730 · Corunna: $116k46738 · Garrett: $58k46742 · Hamilton: $79k46747 · Hudson: $76k46748 · Huntertown: $109k46755 · Kendallville: $67k46763 · Laotto: $97k46785 · Saint Joe: $63k46788 · Spencerville: $102k46793 · Waterloo: $80k467064672146755467934674746742467104678846763467854670546730467384674846705 · Ashley: $67k46706 · Auburn: $81k46710 · Avilla: $84k46721 · Butler: $69k46730 · Corunna: $116k46738 · Garrett: $58k46742 · Hamilton: $79k46747 · Hudson: $76k46748 · Huntertown: $109k46755 · Kendallville: $67k46763 · Laotto: $97k46785 · Saint Joe: $63k46788 · Spencerville: $102k46793 · Waterloo: $80k4670646721467554679346747467424671046788467634678546705467304673846748
The residential ZIP codes of DeKalb County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $66,717 and $80,965.

They carry 14 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 14 residential ZIP codes in DeKalb County

8 ZIP codes lie mainly in DeKalb County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in DeKalb County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
46706 Auburn 20,403 232 $81k $219k 96%
46738 Garrett 8,533 328 $58k $164k 100%
46721 Butler 4,739 60 $69k $139k 100%
46788 Spencerville 4,373 127 $102k $285k 53%
46793 Waterloo 4,104 77 $80k $184k 99%
46705 Ashley 1,972 89 $67k $160k 70%
46785 Saint Joe 1,491 58 $63k $163k 100%
46730 Corunna 1,299 46 $116k $317k 100%

Partly in DeKalb County

Residential ZIP codes mainly in another county that reach at least 1% into DeKalb County, by their share here
In this county
46742 Hamilton 3,292 63 $79k $251k 31%
46763 Laotto 1,444 58 $97k $271k 19%
46747 Hudson 2,388 65 $76k $161k 14%
46710 Avilla 4,506 101 $84k $218k 13%
46748 Huntertown 6,902 370 $109k $320k 3%
46755 Kendallville 15,441 206 $67k $164k 2%

Download the 14 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

10 ZIP codes of DeKalb County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in DeKalb County and in the neighboring counties
ZIPIn DeKalbElsewhere
4670696%Allen County4%
467552%Noble County98%
467483%Allen County93%; Noble County5%
4671013%Noble County87%
4678853%Allen County47%
4679399%
4674231%Steuben County69%
4674714%Steuben County74%; LaGrange County12%
4670570%Steuben County30%
4676319%Noble County81%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do DeKalb County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of DeKalb County starts with 467.

Three-digit prefixes of DeKalb County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are DeKalb County's
PrefixSectional centerHereAll codes
467Fort Wayne, IN (SCF 467)1466

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.