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County ZIP codes · Missouri · FIPS 29115

Linn County, MO ZIP Codes

Linn County, Missouri has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Linn County and 6 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $59,361 in 64628 (Brookfield) to $75,848 in 64658 (Marceline) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Linn County?

63557 · New Boston: $61k63566 · Winigan: $97k64628 · Brookfield: $59k64630 · Browning: $58k64631 · Bucklin: $60k64635 · Chula: $78k64646 · Humphreys: $68k64651 · Laclede: $72k64653 · Linneus: $55k64658 · Marceline: $76k64659 · Meadville: $74k64674 · Purdin: $70k64681 · Sumner: $71k64688 · Wheeling: $68k646286463064658646886355764653646746463164646646356465964681646516356663557 · New Boston: $61k63566 · Winigan: $97k64628 · Brookfield: $59k64630 · Browning: $58k64631 · Bucklin: $60k64635 · Chula: $78k64646 · Humphreys: $68k64651 · Laclede: $72k64653 · Linneus: $55k64658 · Marceline: $76k64659 · Meadville: $74k64674 · Purdin: $70k64681 · Sumner: $71k64688 · Wheeling: $68k6462864630646586468863557646536467464631646466463564681646516356663557 · New Boston: $61k63566 · Winigan: $97k64628 · Brookfield: $59k64630 · Browning: $58k64631 · Bucklin: $60k64635 · Chula: $78k64646 · Humphreys: $68k64651 · Laclede: $72k64653 · Linneus: $55k64658 · Marceline: $76k64659 · Meadville: $74k64674 · Purdin: $70k64681 · Sumner: $71k64688 · Wheeling: $68k64628646306465864688635576465364674646316464664635646816465163566
The residential ZIP codes of Linn 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 14 postal town names.

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

All 14 residential ZIP codes in Linn County

8 ZIP codes lie mainly in Linn County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Linn County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
64628 Brookfield 5,661 38 $59k $124k 87%
64631 Bucklin 836 9 $60k $110k 69%
64659 Meadville 793 12 $74k $143k 100%
64651 Laclede 461 12 $72k $78k 100%
64653 Linneus 431 5 $55k $108k 100%
64674 Purdin 409 6 $70k $116k 100%
63557 New Boston 272 3 $61k $281k 66%
63566 Winigan 72 4 $97k $100k 61%

Partly in Linn County

Residential ZIP codes mainly in another county that reach at least 1% into Linn County, by their share here
In this county
64630 Browning 495 5 $58k $148k 47%
64688 Wheeling 705 11 $68k $133k 26%
64658 Marceline 3,147 34 $76k $145k 22%
64635 Chula 508 8 $78k $140k 15%
64646 Humphreys 471 10 $68k – 12%
64681 Sumner 170 3 $71k $81k 6%

Download the 14 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?

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

Share of each ZIP code's land in Linn County and in the neighboring counties
ZIPIn LinnElsewhere
6462887%Chariton County 13%
6465822%Chariton County 75%; Macon County 3%
6463169%Macon County 31%
6468826%Livingston County 74%
6463515%Livingston County 74%; Grundy County 10%
6463047%Sullivan County 53%
6464612%Sullivan County 88%
6355766%Macon County 21%; Adair County 9%; Sullivan County 3%
646816%Chariton County 94%
6356661%Sullivan County 39%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Linn County's ZIP codes use 2 prefixes: 635 and 646.

Three-digit prefixes of Linn 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 Linn County's
PrefixSectional centerHereAll codes
635 Mid-Missouri, MO (SCF 650) 2 33
646 Kansas City, MO (SCF 640) 12 55

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