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County ZIP codes · Missouri · FIPS 29081

Harrison County, MO ZIP Codes

Harrison County, Missouri has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Harrison County and 5 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $52,083 in 64670 (Pattonsburg) to $55,341 in 64481 (Ridgeway) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Harrison County?

64424 · Bethany: $54k64426 · Blythedale: $88k64442 · Eagleville: $62k64456 · Grant City: $49k64458 · Hatfield: –64467 · Martinsville: –64471 · New Hampton: $34k64481 · Ridgeway: $55k64632 · Cainsville: $50k64636 · Coffey: $34k64642 · Gilman City: $64k64657 · McFall: $60k64670 · Pattonsburg: $52k6442464481644566467064642646326465764442644586442664471644676463664424 · Bethany: $54k64426 · Blythedale: $88k64442 · Eagleville: $62k64456 · Grant City: $49k64458 · Hatfield: –64467 · Martinsville: –64471 · New Hampton: $34k64481 · Ridgeway: $55k64632 · Cainsville: $50k64636 · Coffey: $34k64642 · Gilman City: $64k64657 · McFall: $60k64670 · Pattonsburg: $52k6442464481644566467064642646326465764442644586442664471644676463664424 · Bethany: $54k64426 · Blythedale: $88k64442 · Eagleville: $62k64456 · Grant City: $49k64458 · Hatfield: –64467 · Martinsville: –64471 · New Hampton: $34k64481 · Ridgeway: $55k64632 · Cainsville: $50k64636 · Coffey: $34k64642 · Gilman City: $64k64657 · McFall: $60k64670 · Pattonsburg: $52k64424644816445664670646426463264657644426445864426644716446764636
The residential ZIP codes of Harrison 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?

They carry 13 postal town names.

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

All 13 residential ZIP codes in Harrison County

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

Residential ZIP codes mainly in Harrison County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
64424 Bethany 3,929 24 $54k $121k 100%
64481 Ridgeway 1,154 9 $55k $120k 100%
64442 Eagleville 951 12 $62k $115k 100%
64642 Gilman City 804 7 $64k $95k 65%
64426 Blythedale 530 10 $88k $28k 100%
64471 New Hampton 309 7 $34k $74k 79%
64458 Hatfield 159 3 – $78k 95%
64467 Martinsville 145 3 – $212k 100%

Partly in Harrison County

Residential ZIP codes mainly in another county that reach at least 1% into Harrison County, by their share here
In this county
64632 Cainsville 371 4 $50k $80k 41%
64657 McFall 266 4 $60k $139k 36%
64636 Coffey 217 10 $34k $113k 26%
64456 Grant City 1,367 8 $49k $92k 6%
64670 Pattonsburg 1,007 8 $52k $177k 5%

Download the 13 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?

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

Share of each ZIP code's land in Harrison County and in the neighboring counties
ZIPIn HarrisonElsewhere
644566%Worth County94%
646705%Daviess County78%; DeKalb County12%; Gentry County5%
6464265%Daviess County24%; Grundy County12%
6463241%Mercer County59%
6447179%Gentry County21%
6465736%Gentry County54%; Daviess County10%
6463626%Daviess County74%
6445895%Worth County5%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Harrison County's ZIP codes use 2 prefixes: 644 and 646.

Three-digit prefixes of Harrison 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 Harrison County's
PrefixSectional centerHereAll codes
644Kansas City, MO (SCF 640)870
646Kansas City, MO (SCF 640)555

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