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County ZIP codes · Missouri · FIPS 29005

Atchison County, MO ZIP Codes

Atchison County, Missouri has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Atchison County and 3 mainly in a neighboring county; 3 cross the county line. Median household income ranges from $56,949 in 64446 (Fairfax) to $66,534 in 64482 (Rock Port) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Atchison County?

51640 · Hamburg: $65k64428 · Burlington Junction: $56k64446 · Fairfax: $57k64482 · Rock Port: $67k64487 · Skidmore: $66k64491 · Tarkio: $58k64496 · Watson: $53k64498 · Westboro: $49k644875164064482644466449164428644986449651640 · Hamburg: $65k64428 · Burlington Junction: $56k64446 · Fairfax: $57k64482 · Rock Port: $67k64487 · Skidmore: $66k64491 · Tarkio: $58k64496 · Watson: $53k64498 · Westboro: $49k644875164064482644466449164428644986449651640 · Hamburg: $65k64428 · Burlington Junction: $56k64446 · Fairfax: $57k64482 · Rock Port: $67k64487 · Skidmore: $66k64491 · Tarkio: $58k64496 · Watson: $53k64498 · Westboro: $49k6448751640644826444664491644286449864496
The residential ZIP codes of Atchison 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 $56,949 and $65,385.

They carry 8 postal town names: Rock Port, Tarkio, Hamburg, Fairfax, Burlington Junction, Skidmore, Watson, Westboro.

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

All 8 residential ZIP codes in Atchison County

5 ZIP codes lie mainly in Atchison County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Atchison County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
64482 Rock Port 1,980 15 $67k $120k 100%
64491 Tarkio 1,638 14 $58k $91k 100%
64446 Fairfax 1,066 8 $57k $102k 100%
64496 Watson 224 6 $53k $207k 100%
64498 Westboro 221 3 $49k $46k 100%

Partly in Atchison County

Residential ZIP codes mainly in another county that reach at least 1% into Atchison County, by their share here
In this county
51640 Hamburg 1,381 12 $65k $123k 18%
64487 Skidmore 572 4 $66k $96k 16%
64428 Burlington Junction 609 7 $56k $106k 14%

Download the 8 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?

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

Share of each ZIP code's land in Atchison County and in the neighboring counties
ZIPIn AtchisonElsewhere
5164018%Fremont County 82%
6442814%Nodaway County 87%
6448716%Nodaway County 75%; Holt County 9%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Atchison County's ZIP codes use 2 prefixes: 516 and 644.

Three-digit prefixes of Atchison 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 Atchison County's
PrefixSectional centerHereAll codes
516 Omaha, NE (SCF 680) 1 21
644 Kansas City, MO (SCF 640) 7 70

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