ZIP Codes of Dearborn County, IN

Population & People
Population & People
Total Population
51,100
Household Income
Household Income
Median Income
$79,437
Housing
Housing
Total Housing Units
21,444
Business & Economy
Business & Economy
Total Businesses
989
Employment
Employment
Employment Rate
60.63%
Education
Education
Bachelor's Degree+
25.61%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:812 / 930
Timezone:Eastern (GMT -05:00)
Local Time:2:12:05 PM
Population:51,100 [See All]
FIPS:18029
CBSA:Cincinnati, OH-KY-IN
Land Area:342 sq mi
Water Area:3 sq mi
Coordinates:39.1311, -84.9635
Quick Link:
https://www.zip-codes.com/county/in-dearborn.asp
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Owner-dominated county
Just 14.6% of homes are rentals — strong homeownership culture.

Standout ZIPs in this County


Most Populous
Lawrenceburg · 23,570 people
46.1% of county total
Highest Income
Guilford · $93,633 median
1.2× county average
Largest Land Area
Aurora · 78.6 sq mi
Spans the most ground
Fastest Growth
Moores Hill · 4.2% (10-yr)
3,153 → 3,285 residents
Most Educated
Guilford · 32.1% bachelor's+
691 of 2,156 adults 25+

Things worth knowing about Dearborn County


51,100 residents live across 6 ZIPs covering 342 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 50,432 to 51,100 from 2014 to 2024 — a +1.3% change. 3 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 47022 (Guilford, $93,633 median) and poorest ZIP 47018 (Dillsboro, $61,085) are 16.8 miles apart — a 1.5× income gap across local geography.

Median home values vary 1.6× across this county — from $188,800 in 47018 (Dillsboro) to $299,300 in 47060 (West Harrison).

Density varies across the county — from 55 people/sq mi in 47018 (Dillsboro) to 436 in 47025 (Lawrenceburg).

Educational attainment ranges from 16.3% bachelor's+ in 47001 (Aurora) to 32.1% in 47022 (Guilford) — the breadth of educational profiles across the area.

Within Indiana, this is the #28 most populous of 92 counties and ranks #21 for median household income .

Weighted by population, the typical household earns about $84,307 across the county — reflecting what a typical resident sees, not a simple ZIP average.

25.6% of adults age 25+ hold a bachelor's degree or higher (9,231 of 36,045 reporting).

6 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Dearborn County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
47025LawrenceburgStandard23,570$92,95154.03.1%
47001AuroraStandard10,696$75,88678.62.1%
47060West HarrisonStandard6,309$86,11858.4-0.2%
47018DillsboroStandard4,166$61,08576.3-3.7%
47032Moores HillStandard3,285$66,95038.94.2%
47022GuilfordStandard3,074$93,63336.1-6.4%

Adjacent & Nearby Counties