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County ZIP codes · Michigan · FIPS 26127

Oceana County, MI ZIP Codes

Oceana County, Michigan has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Oceana County and 4 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $51,324 in 49402 (Branch) to $82,805 in 49437 (Montague) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Oceana County?

49402 · Branch: $51k49412 · Fremont: $67k49420 · Hart: $59k49421 · Hesperia: $54k49425 · Holton: $63k49436 · Mears: $67k49437 · Montague: $83k49446 · New Era: $65k49449 · Pentwater: $81k49452 · Rothbury: $55k49455 · Shelby: $64k49459 · Walkerville: $56k49402494214941249420494554943749425494594944949452494464943649402 · Branch: $51k49412 · Fremont: $67k49420 · Hart: $59k49421 · Hesperia: $54k49425 · Holton: $63k49436 · Mears: $67k49437 · Montague: $83k49446 · New Era: $65k49449 · Pentwater: $81k49452 · Rothbury: $55k49455 · Shelby: $64k49459 · Walkerville: $56k49402494214941249420494554943749425494594944949452494464943649402 · Branch: $51k49412 · Fremont: $67k49420 · Hart: $59k49421 · Hesperia: $54k49425 · Holton: $63k49436 · Mears: $67k49437 · Montague: $83k49446 · New Era: $65k49449 · Pentwater: $81k49452 · Rothbury: $55k49455 · Shelby: $64k49459 · Walkerville: $56k494024942149412494204945549437494254945949449494524944649436
The residential ZIP codes of Oceana 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 $55,441 and $66,741.

They carry 12 postal town names.

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

All 12 residential ZIP codes in Oceana County

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

Residential ZIP codes mainly in Oceana County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
49420 Hart 6,202 53 $59k $167k 100%
49421 Hesperia 5,734 45 $54k $162k 60%
49455 Shelby 5,429 64 $64k $178k 100%
49449 Pentwater 2,587 62 $81k $307k 70%
49452 Rothbury 2,208 49 $55k $123k 100%
49446 New Era 2,184 69 $65k $209k 100%
49436 Mears 1,644 52 $67k $255k 100%
49459 Walkerville 1,524 19 $56k $108k 95%

Partly in Oceana County

Residential ZIP codes mainly in another county that reach at least 1% into Oceana County, by their share here
In this county
49437 Montague 6,895 105 $83k $222k 39%
49425 Holton 3,520 55 $63k $179k 28%
49412 Fremont 12,097 110 $67k $198k 2%
49402 Branch 1,411 10 $51k $170k 1%

Download the 12 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 Oceana County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Oceana County and in the neighboring counties
ZIPIn OceanaElsewhere
494122%Newaygo County 97%
4943739%Muskegon County 61%
4942160%Newaygo County 40%
4942528%Muskegon County 63%; Newaygo County 10%
4944970%Mason County 30%
4945995%Newaygo County 5%
494021%Lake County 52%; Mason County 47%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Oceana County starts with 494.

Three-digit prefixes of Oceana 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 Oceana County's
PrefixSectional centerHereAll codes
494 Grand Rapids, MI (SCF 493) 12 57

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