ZIP Codes of Blackford County, IN

Population & People
Population & People
Total Population
12,608
Household Income
Household Income
Median Income
$61,016
Housing
Housing
Total Housing Units
6,015
Business & Economy
Business & Economy
Total Businesses
230
Employment
Employment
Employment Rate
56.55%
Education
Education
Bachelor's Degree+
14.03%
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 (2 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:765
Timezone:Eastern (GMT -05:00)
Local Time:2:12:05 PM
Population:12,608 [See All]
FIPS:18009
Land Area:171 sq mi
Water Area:1 sq mi
Coordinates:40.5124, -85.3138
Quick Link:
https://www.zip-codes.com/county/in-blackford.asp
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Indiana's #82 most populous county
12,608 residents across 2 ZIPs — #82 of 92 Indiana counties.

Standout ZIPs in this County


Most Populous
Hartford City · 9,080 people
72.0% of county total
Highest Income
Montpelier · $71,607 median
1.2× county average
Largest Land Area
Hartford City · 112.9 sq mi
Spans the most ground
Fastest Growth
Montpelier · 22.2% (10-yr)
2,886 → 3,528 residents
Most Educated
Hartford City · 15.5% bachelor's+
989 of 6,392 adults 25+

Things worth knowing about Blackford County


12,608 residents live across 2 ZIPs covering 171 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 12,805 to 12,608 from 2014 to 2024 — a -1.5% change. 1 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 47359 (Montpelier, $71,607 median) and poorest ZIP 47348 (Hartford City, $50,426) are 6.7 miles apart — a 1.4× income gap across local geography.

Median home values vary 1.1× across this county — from $109,500 in 47348 (Hartford City) to $121,900 in 47359 (Montpelier).

Density varies across the county — from 60 people/sq mi in 47359 (Montpelier) to 80 in 47348 (Hartford City).

Educational attainment ranges from 10.1% bachelor's+ in 47359 (Montpelier) to 15.5% in 47348 (Hartford City) — the breadth of educational profiles across the area.

Within Indiana, this is the #82 most populous of 92 counties and ranks #85 for median household income .

Weighted by population, the typical household earns about $56,353 across the county — reflecting what a typical resident sees, not a simple ZIP average.

14.0% of adults age 25+ hold a bachelor's degree or higher (1,223 of 8,719 reporting).

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

Stories about Blackford 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.

Hartford City

All ZIP Codes in Blackford County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
47348Hartford CityStandard9,080$50,426112.9-8.5%
47359MontpelierStandard3,528$71,60758.522.2%

Adjacent & Nearby Counties