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County ZIP codes · Indiana · FIPS 18009

Blackford County, IN ZIP Codes

Blackford County, Indiana has 7 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Blackford County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $50,426 in 47348 (Hartford City) to $71,607 in 47359 (Montpelier) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Blackford County?

46952 · Marion: $53k46989 · Upland: $82k47336 · Dunkirk: $51k47338 · Eaton: $68k47348 · Hartford City: $50k47359 · Montpelier: $72k47369 · Pennville: $33k4695247348473594733647369469894733846952 · Marion: $53k46989 · Upland: $82k47336 · Dunkirk: $51k47338 · Eaton: $68k47348 · Hartford City: $50k47359 · Montpelier: $72k47369 · Pennville: $33k4695247348473594733647369469894733846952 · Marion: $53k46989 · Upland: $82k47336 · Dunkirk: $51k47338 · Eaton: $68k47348 · Hartford City: $50k47359 · Montpelier: $72k47369 · Pennville: $33k46952473484735947336473694698947338
The residential ZIP codes of Blackford 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 $50,633 and $68,239.

They carry 7 postal town names: Marion, Hartford City, Upland, Montpelier, Dunkirk, Eaton, Pennville.

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

All 7 residential ZIP codes in Blackford County

2 ZIP codes lie mainly in Blackford County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Blackford County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
47348 Hartford City 9,080 78 $50k $110k 98%
47359 Montpelier 3,528 62 $72k $122k 63%

Partly in Blackford County

Residential ZIP codes mainly in another county that reach at least 1% into Blackford County, by their share here
In this county
47336 Dunkirk 2,851 61 $51k $98k 17%
47338 Eaton 2,355 79 $68k $111k 7%
47369 Pennville 1,212 34 $33k $143k 5%
46952 Marion 18,189 172 $53k $147k 3%
46989 Upland 5,385 168 $82k $219k 1%

Download the 7 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 Blackford County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Blackford County and in the neighboring counties
ZIPIn BlackfordElsewhere
469523%Grant County90%; Wells County5%; Huntington County3%
4734898%Grant County2%
469891%Grant County97%; Delaware County2%
4735963%Wells County37%
4733617%Jay County54%; Delaware County30%
473387%Delaware County93%
473695%Jay County95%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Blackford County's ZIP codes use 2 prefixes: 469 and 473.

Three-digit prefixes of Blackford 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 Blackford County's
PrefixSectional centerHereAll codes
469Indianapolis, IN (SCF 460)271
473Muncie, IN (SCF 473)563

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