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County ZIP codes · North Dakota · FIPS 38055

McLean County, ND ZIP Codes

McLean County, North Dakota has 18 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 13 of the residential ones lie mainly in McLean County and 5 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $74,471 in 58577 (Washburn) to $102,614 in 58576 (Underwood) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of McLean County?

58531 · Coleharbor: $81k58540 · Garrison: $76k58559 · Mercer: $80k58565 · Riverdale: $73k58575 · Turtle Lake: $83k58576 · Underwood: $103k58577 · Washburn: $75k58579 · Wilton: $94k58716 · Benedict: $62k58723 · Butte: $60k58735 · Douglas: $150k58756 · Makoti: $77k58759 · Max: $87k58770 · Parshall: $65k58771 · Plaza: $89k58775 · Roseglen: $50k58778 · Ruso: $149k58779 · Ryder: $63k585405877958771585775877058579585755875958559587235873558531585765877858756587165877558531 · Coleharbor: $81k58540 · Garrison: $76k58559 · Mercer: $80k58565 · Riverdale: $73k58575 · Turtle Lake: $83k58576 · Underwood: $103k58577 · Washburn: $75k58579 · Wilton: $94k58716 · Benedict: $62k58723 · Butte: $60k58735 · Douglas: $150k58756 · Makoti: $77k58759 · Max: $87k58770 · Parshall: $65k58771 · Plaza: $89k58775 · Roseglen: $50k58778 · Ruso: $149k58779 · Ryder: $63k5854058779587715857758770585795857558759587235873558531585765877858756587165877558531 · Coleharbor: $81k58540 · Garrison: $76k58559 · Mercer: $80k58565 · Riverdale: $73k58575 · Turtle Lake: $83k58576 · Underwood: $103k58577 · Washburn: $75k58579 · Wilton: $94k58716 · Benedict: $62k58723 · Butte: $60k58735 · Douglas: $150k58756 · Makoti: $77k58759 · Max: $87k58770 · Parshall: $65k58771 · Plaza: $89k58775 · Roseglen: $50k58778 · Ruso: $149k58779 · Ryder: $63k5854058779587715857758770585795857558759587235853158576587785875658775
The residential ZIP codes of McLean 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 $74,471 and $93,750.

They carry 18 postal town names.

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

All 18 residential ZIP codes in McLean County

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

Residential ZIP codes mainly in McLean County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58540 Garrison 2,634 7 $76k $228k 100%
58577 Washburn 1,954 10 $75k $260k 100%
58576 Underwood 1,063 6 $103k $197k 100%
58575 Turtle Lake 910 4 $83k $170k 100%
58759 Max 756 3 $87k $153k 53%
58559 Mercer 411 2 $80k $297k 73%
58779 Ryder 343 1 $63k $67k 54%
58716 Benedict 308 4 $62k $283k 62%
58531 Coleharbor 303 3 $81k $319k 100%
58723 Butte 244 1 $60k $119k 55%
58775 Roseglen 218 3 $50k – 100%
58565 Riverdale 187 116 $73k $223k 100%
58778 Ruso 187 1 $149k $373k 92%

Partly in McLean County

Residential ZIP codes mainly in another county that reach at least 1% into McLean County, by their share here
In this county
58735 Douglas 565 3 $150k $308k 41%
58770 Parshall 1,369 5 $65k $170k 37%
58579 Wilton 1,001 4 $94k $282k 31%
58756 Makoti 165 1 $77k $100k 4%
58771 Plaza 585 2 $89k $170k 3%

Download the 18 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?

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

Share of each ZIP code's land in McLean County and in the neighboring counties
ZIPIn McLeanElsewhere
5877037%Mountrail County 63%
5857931%Burleigh County 69%
5875953%Ward County 47%
587713%Mountrail County 76%; Ward County 20%
5873541%Ward County 59%
5855973%Sheridan County 27%
5877954%Ward County 46%
5871662%Ward County 38%
5872355%Sheridan County 44%; McHenry County 1%
5877892%McHenry County 8%
587564%Ward County 75%; Mountrail County 21%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. McLean County's ZIP codes use 2 prefixes: 585 and 587.

Three-digit prefixes of McLean 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 McLean County's
PrefixSectional centerHereAll codes
585 Bismarck, ND (SCF 585) 8 48
587 Bismarck, ND (SCF 585) 10 64

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