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County ZIP codes · North Dakota · FIPS 38053

McKenzie County, ND ZIP Codes

McKenzie County, North Dakota has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in McKenzie County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $58,110 in 58763 (New Town) to $99,000 in 58854 (Watford City) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of McKenzie County?

58621 · Beach: $67k58634 · Grassy Butte: $158k58757 · Mandaree: $82k58763 · New Town: $58k58831 · Alexander: $98k58835 · Arnegard: $138k58838 · Cartwright: $59k58847 · Keene: $85k58854 · Watford City: $99k59221 · Fairview: $77k59270 · Sidney: $73k592705885458763586215875758831586345883559221588385884758621 · Beach: $67k58634 · Grassy Butte: $158k58757 · Mandaree: $82k58763 · New Town: $58k58831 · Alexander: $98k58835 · Arnegard: $138k58838 · Cartwright: $59k58847 · Keene: $85k58854 · Watford City: $99k59221 · Fairview: $77k59270 · Sidney: $73k592705885458763586215875758831586345883559221588385884758621 · Beach: $67k58634 · Grassy Butte: $158k58757 · Mandaree: $82k58763 · New Town: $58k58831 · Alexander: $98k58835 · Arnegard: $138k58838 · Cartwright: $59k58847 · Keene: $85k58854 · Watford City: $99k59221 · Fairview: $77k59270 · Sidney: $73k592705885458763586215875758831586345883559221
The residential ZIP codes of McKenzie 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 $58,110 and $98,380.

They carry 11 postal town names.

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

All 11 residential ZIP codes in McKenzie County

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

Residential ZIP codes mainly in McKenzie County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58854 Watford City 9,368 14 $99k $389k 92%
58831 Alexander 1,089 3 $98k $342k 100%
58835 Arnegard 839 3 $138k $375k 100%
58634 Grassy Butte 402 1 $158k – 98%
58838 Cartwright 252 1 $59k $173k 100%
58847 Keene 209 1 $85k $103k 100%

Partly in McKenzie County

Residential ZIP codes mainly in another county that reach at least 1% into McKenzie County, by their share here
In this county
59270 Sidney 8,571 10 $73k $268k 40%
58763 New Town 4,426 8 $58k $227k 40%
58757 Mandaree 986 3 $82k $200k 21%
59221 Fairview 1,951 7 $77k $244k 15%
58621 Beach 1,161 3 $67k $125k 3%

Download the 11 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 McKenzie County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in McKenzie County and in the neighboring counties
ZIPIn McKenzieElsewhere
5885492%Dunn County 8%
5927040%Richland County 60%
5876340%Mountrail County 60%
5922115%Richland County 85%
586213%Golden Valley County 91%; Wibaux County 4%; Billings County 2%
5875721%Dunn County 79%
5863498%Billings County 2%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. McKenzie County's ZIP codes use 4 prefixes: 586, 587, 588 and 592.

Three-digit prefixes of McKenzie 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 McKenzie County's
PrefixSectional centerHereAll codes
586 Bismarck, ND (SCF 585) 2 32
587 Bismarck, ND (SCF 585) 2 64
588 Bismarck, ND (SCF 585) 5 17
592 Billings, MT (SCF 590) 2 41

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