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County ZIP codes · Indiana · FIPS 18029

Dearborn County, IN ZIP Codes

Dearborn County, Indiana has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Dearborn County and 2 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $61,085 in 47018 (Dillsboro) to $93,633 in 47022 (Guilford) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Dearborn County?

47001 · Aurora: $76k47012 · Brookville: $85k47018 · Dillsboro: $61k47022 · Guilford: $94k47025 · Lawrenceburg: $93k47031 · Milan: $71k47032 · Moores Hill: $67k47041 · Sunman: $81k47060 · West Harrison: $86k47012470014701847041470314706047025470324702247001 · Aurora: $76k47012 · Brookville: $85k47018 · Dillsboro: $61k47022 · Guilford: $94k47025 · Lawrenceburg: $93k47031 · Milan: $71k47032 · Moores Hill: $67k47041 · Sunman: $81k47060 · West Harrison: $86k47012470014701847041470314706047025470324702247001 · Aurora: $76k47012 · Brookville: $85k47018 · Dillsboro: $61k47022 · Guilford: $94k47025 · Lawrenceburg: $93k47031 · Milan: $71k47032 · Moores Hill: $67k47041 · Sunman: $81k47060 · West Harrison: $86k4701247001470184704147031470604702547022
The residential ZIP codes of Dearborn 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 $66,950 and $84,958.

They carry 9 postal town names.

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

All 9 residential ZIP codes in Dearborn County

7 ZIP codes lie mainly in Dearborn County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Dearborn County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
47025 Lawrenceburg 23,570 451 $93k $258k 100%
47001 Aurora 10,696 140 $76k $200k 79%
47060 West Harrison 6,309 108 $86k $299k 57%
47041 Sunman 5,884 76 $81k $287k 51%
47018 Dillsboro 4,166 56 $61k $189k 45%
47032 Moores Hill 3,285 85 $67k $246k 93%
47022 Guilford 3,074 87 $94k $283k 100%

Partly in Dearborn County

Residential ZIP codes mainly in another county that reach at least 1% into Dearborn County, by their share here
In this county
47031 Milan 5,659 89 $71k $196k 11%
47012 Brookville 10,733 65 $85k $258k 5%

Download the 9 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?

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

Share of each ZIP code's land in Dearborn County and in the neighboring counties
ZIPIn DearbornElsewhere
470125%Franklin County 95%
4700179%Ohio County 21%
4706057%Franklin County 43%
4704151%Ripley County 47%; Franklin County 2%
4703111%Ripley County 89%
4701845%Ohio County 28%; Ripley County 24%; Switzerland County 3%
4703293%Ripley County 7%

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

Which first three digits do Dearborn 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 Dearborn County starts with 470.

Three-digit prefixes of Dearborn 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 Dearborn County's
PrefixSectional centerHereAll codes
470 Cincinnati, OH (SCF 450) 9 31

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