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County ZIP codes · North Dakota · FIPS 38057

Mercer County, ND ZIP Codes

Mercer County, North Dakota has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Mercer County and 4 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $81,641 in 58545 (Hazen) to $81,806 in 58523 (Beulah) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Mercer County?

58523 · Beulah: $82k58541 · Golden Valley: $98k58545 · Hazen: $82k58571 · Stanton: $61k58580 · Zap: $110k58625 · Dodge: –58631 · Glen Ullin: $58k58636 · Halliday: $62k58638 · Hebron: $64k58636586315854558638585415852358580585715862558523 · Beulah: $82k58541 · Golden Valley: $98k58545 · Hazen: $82k58571 · Stanton: $61k58580 · Zap: $110k58625 · Dodge: –58631 · Glen Ullin: $58k58636 · Halliday: $62k58638 · Hebron: $64k586365863158545586385854158523585715862558523 · Beulah: $82k58541 · Golden Valley: $98k58545 · Hazen: $82k58571 · Stanton: $61k58580 · Zap: $110k58625 · Dodge: –58631 · Glen Ullin: $58k58636 · Halliday: $62k58638 · Hebron: $64k586365863158545586385854158523
The residential ZIP codes of Mercer 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 9 postal town names.

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

All 9 residential ZIP codes in Mercer County

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

Residential ZIP codes mainly in Mercer County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58545 Hazen 3,313 11 $82k $203k 76%
58523 Beulah 3,280 13 $82k $215k 71%
58571 Stanton 754 7 $61k $132k 70%
58580 Zap 566 4 $110k $247k 100%
58541 Golden Valley 467 2 $98k $206k 100%

Partly in Mercer County

Residential ZIP codes mainly in another county that reach at least 1% into Mercer County, by their share here
In this county
58638 Hebron 874 3 $64k $109k 30%
58625 Dodge 231 2 – – 28%
58631 Glen Ullin 953 3 $58k $133k 9%
58636 Halliday 918 2 $62k $141k 6%

Download the 9 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 Mercer County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Mercer County and in the neighboring counties
ZIPIn MercerElsewhere
5854576%Oliver County 24%
5852371%Oliver County 29%
586319%Morton County 62%; Grant County 30%
586366%Dunn County 94%
5863830%Morton County 43%; Stark County 16%; Grant County 7%; Dunn County 4%
5857170%Oliver County 30%
5862528%Dunn County 72%

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

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

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

Three-digit prefixes of Mercer 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 Mercer County's
PrefixSectional centerHereAll codes
585 Bismarck, ND (SCF 585) 5 48
586 Bismarck, ND (SCF 585) 4 32

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