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County ZIP codes · North Dakota · FIPS 38059

Morton County, ND ZIP Codes

Morton County, North Dakota has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones extend into a neighboring county. Median household income ranges from $78,214 in 58563 (New Salem) to $80,120 in 58554 (Mandan) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Morton County?

58520 · Almont: $96k58535 · Flasher: $66k58554 · Mandan: $80k58563 · New Salem: $78k58566 · Saint Anthony: $52k58570 · Solen: $111k58631 · Glen Ullin: $58k58638 · Hebron: $64k585545856358631586385857058535585205856658520 · Almont: $96k58535 · Flasher: $66k58554 · Mandan: $80k58563 · New Salem: $78k58566 · Saint Anthony: $52k58570 · Solen: $111k58631 · Glen Ullin: $58k58638 · Hebron: $64k585545856358631586385857058535585205856658520 · Almont: $96k58535 · Flasher: $66k58554 · Mandan: $80k58563 · New Salem: $78k58566 · Saint Anthony: $52k58570 · Solen: $111k58631 · Glen Ullin: $58k58638 · Hebron: $64k5855458563586315863858570585355852058566
The residential ZIP codes of Morton 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 8 postal town names: Mandan, New Salem, Glen Ullin, Hebron, Flasher, Solen, Almont, Saint Anthony.

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

All 8 residential ZIP codes in Morton County

Residential ZIP codes mainly in Morton County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58554 Mandan 29,479 51 $80k $278k 94%
58563 New Salem 1,961 3 $78k $220k 68%
58631 Glen Ullin 953 3 $58k $133k 62%
58638 Hebron 874 3 $64k $109k 43%
58535 Flasher 500 1 $66k $122k 63%
58570 Solen 437 1 $111k $120k 51%
58520 Almont 272 1 $96k $89k 69%
58566 Saint Anthony 272 3 $52k $310k 100%

Download the 8 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 Morton County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Morton County and in the neighboring counties
ZIPIn MortonElsewhere
5855494%Oliver County 6%
5856368%Oliver County 30%; Grant County 2%
5863162%Grant County 30%; Mercer County 9%
5863843%Mercer County 30%; Stark County 16%; Grant County 7%; Dunn County 4%
5853563%Grant County 37%
5857051%Sioux County 49%
5852069%Grant County 31%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Morton County's ZIP codes use 2 prefixes: 585 and 586.

Three-digit prefixes of Morton 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 Morton County's
PrefixSectional centerHereAll codes
585 Bismarck, ND (SCF 585) 6 48
586 Bismarck, ND (SCF 585) 2 32

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