ZIP Codes of Brown County, IN

Population & People
Population & People
Total Population
8,254
Household Income
Household Income
Median Income
$72,537
Housing
Housing
Total Housing Units
4,198
Business & Economy
Business & Economy
Total Businesses
290
Employment
Employment
Employment Rate
52.27%
Education
Education
Bachelor's Degree+
27.09%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 2 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (1 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:812 / 930
Timezone:Eastern (GMT -05:00)
Local Time:2:12:05 PM
Population:8,254 [See All]
FIPS:18013
CBSA:Indianapolis-Carmel-Greenwood, IN
Land Area:197 sq mi
Water Area:4 sq mi
Coordinates:39.2261, -86.2594
Quick Link:
https://www.zip-codes.com/county/in-brown.asp
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Indiana's oldest county
Median age 50.9.

Standout ZIPs in this County


Most Populous
Nashville · 8,117 people
98.3% of county total
Highest Income
Nashville · $72,537 median
1.0× county average
Largest Land Area
Nashville · 196.9 sq mi
Spans the most ground
Fastest Growth
Nashville · 10.3% (10-yr)
7,359 → 8,117 residents
Most Educated
Nashville · 27.5% bachelor's+
1,732 of 6,287 adults 25+

Things worth knowing about Brown County


8,254 residents live across 2 ZIPs covering 197 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 7,359 to 8,117 from 2014 to 2024 — a +10.3% change. 1 ZIPs gained residents, 0 lost.

The county's wealthiest ZIP 47448 (Nashville, $72,537 median) and poorest ZIP 47448 (Nashville, $72,537) are 0.0 miles apart — a 1.0× income gap across local geography.

Educational attainment ranges from 5.8% bachelor's+ in 47435 (Helmsburg) to 27.5% in 47448 (Nashville) — the breadth of educational profiles across the area.

Within Indiana, this is the #89 most populous of 92 counties and ranks #44 for median household income with the #6 fastest decade growth .

Weighted by population, the typical household earns about $72,537 across the county — reflecting what a typical resident sees, not a simple ZIP average.

27.1% of adults age 25+ hold a bachelor's degree or higher (1,740 of 6,424 reporting).

1 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Brown County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Nashville

All ZIP Codes in Brown County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
47448NashvilleStandard8,117$72,537196.910.3%
47435HelmsburgPO Box1370.0

Adjacent & Nearby Counties