Plain

County ZIP codes · North Dakota · FIPS 38065

Oliver County, ND ZIP Codes

Oliver County, North Dakota has 6 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 1 of the residential ones lie mainly in Oliver County and 5 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $78,214 in 58563 (New Salem) to $82,000 in 58530 (Center) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Oliver County?

58523 · Beulah: $82k58530 · Center: $82k58545 · Hazen: $82k58554 · Mandan: $80k58563 · New Salem: $78k58571 · Stanton: $61k58554585635854558530585235857158523 · Beulah: $82k58530 · Center: $82k58545 · Hazen: $82k58554 · Mandan: $80k58563 · New Salem: $78k58571 · Stanton: $61k58554585635854558530585235857158523 · Beulah: $82k58530 · Center: $82k58545 · Hazen: $82k58554 · Mandan: $80k58563 · New Salem: $78k58571 · Stanton: $61k5855458563585455853058523
The residential ZIP codes of Oliver 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 $80,120 and $81,806.

They carry 6 postal town names: Mandan, Hazen, Beulah, New Salem, Center, Stanton.

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

All 6 residential ZIP codes in Oliver County

1 ZIP code lies mainly in Oliver County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Oliver County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58530 Center 1,144 3 $82k $201k 100%

Partly in Oliver County

Residential ZIP codes mainly in another county that reach at least 1% into Oliver County, by their share here
In this county
58571 Stanton 754 7 $61k $132k 30%
58563 New Salem 1,961 3 $78k $220k 30%
58523 Beulah 3,280 13 $82k $215k 29%
58545 Hazen 3,313 11 $82k $203k 24%
58554 Mandan 29,479 51 $80k $278k 6%

Download the 6 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?

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

Share of each ZIP code's land in Oliver County and in the neighboring counties
ZIPIn OliverElsewhere
585546%Morton County94%
5854524%Mercer County76%
5852329%Mercer County71%
5856330%Morton County68%; Grant County2%
5857130%Mercer County70%

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

Which first three digits do Oliver 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 Oliver County starts with 585.

Three-digit prefixes of Oliver 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 Oliver County's
PrefixSectional centerHereAll codes
585Bismarck, ND (SCF 585)648

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