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County ZIP codes · Michigan · FIPS 26105

Mason County, MI ZIP Codes

Mason County, Michigan has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Mason County and 4 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $51,324 in 49402 (Branch) to $80,917 in 49449 (Pentwater) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Mason County?

49402 · Branch: $51k49405 · Custer: $70k49410 · Fountain: $62k49411 · Free Soil: $62k49431 · Ludington: $66k49449 · Pentwater: $81k49454 · Scottville: $61k49458 · Walhalla: $113k49644 · Irons: $54k49660 · Manistee: $65k49660494114940249644494314940549454494494941049402 · Branch: $51k49405 · Custer: $70k49410 · Fountain: $62k49411 · Free Soil: $62k49431 · Ludington: $66k49449 · Pentwater: $81k49454 · Scottville: $61k49458 · Walhalla: $113k49644 · Irons: $54k49660 · Manistee: $65k49660494114940249644494314940549454494494941049402 · Branch: $51k49405 · Custer: $70k49410 · Fountain: $62k49411 · Free Soil: $62k49431 · Ludington: $66k49449 · Pentwater: $81k49454 · Scottville: $61k49458 · Walhalla: $113k49644 · Irons: $54k49660 · Manistee: $65k496604941149402496444943149405494544944949410
The residential ZIP codes of Mason 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 $61,280 and $66,336.

They carry 10 postal town names.

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

All 10 residential ZIP codes in Mason County

6 ZIP codes lie mainly in Mason County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Mason County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
49431 Ludington 17,184 179 $66k $238k 100%
49454 Scottville 4,873 67 $61k $194k 100%
49410 Fountain 1,734 46 $62k $173k 100%
49411 Free Soil 1,698 15 $62k $239k 95%
49405 Custer 1,635 23 $70k $170k 100%
49458 Walhalla 169 360 $113k $58k 100%

Partly in Mason County

Residential ZIP codes mainly in another county that reach at least 1% into Mason County, by their share here
In this county
49402 Branch 1,411 10 $51k $170k 47%
49449 Pentwater 2,587 62 $81k $307k 30%
49660 Manistee 14,578 85 $65k $193k 18%
49644 Irons 1,715 16 $54k $175k 4%

Download the 10 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?

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

Share of each ZIP code's land in Mason County and in the neighboring counties
ZIPIn MasonElsewhere
4966018%Manistee County 82%
4944930%Oceana County 70%
496444%Lake County 93%; Manistee County 3%
4941195%Manistee County 5%
4940247%Lake County 52%; Oceana County 1%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Mason County's ZIP codes use 2 prefixes: 494 and 496.

Three-digit prefixes of Mason 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 Mason County's
PrefixSectional centerHereAll codes
494 Grand Rapids, MI (SCF 493) 8 57
496 Traverse City, MI (SCF 496) 2 70

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