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County ZIP codes · North Dakota · FIPS 38087

Slope County, ND ZIP Codes

Slope County, North Dakota has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Slope County and 6 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $64,487 in 58623 (Bowman) to $84,583 in 58647 (New England) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Slope County?

58620 · Amidon: $77k58623 · Bowman: $65k58643 · Marmarth: $62k58647 · New England: $85k58649 · Reeder: $69k58651 · Rhame: $76k58653 · Scranton: $86k58654 · Sentinel Butte: $90k586545865158623586475864958653586205864358620 · Amidon: $77k58623 · Bowman: $65k58643 · Marmarth: $62k58647 · New England: $85k58649 · Reeder: $69k58651 · Rhame: $76k58653 · Scranton: $86k58654 · Sentinel Butte: $90k5865458651586235864758649586535862058620 · Amidon: $77k58623 · Bowman: $65k58643 · Marmarth: $62k58647 · New England: $85k58649 · Reeder: $69k58651 · Rhame: $76k58653 · Scranton: $86k58654 · Sentinel Butte: $90k58654586515862358647586495865358620
The residential ZIP codes of Slope 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: Bowman, New England, Scranton, Rhame, Reeder, Sentinel Butte, Amidon, Marmarth.

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

All 8 residential ZIP codes in Slope County

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

Residential ZIP codes mainly in Slope County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58647 New England 1,053 2 $85k $227k 47%
58620 Amidon 154 1 $77k – 99%

Partly in Slope County

Residential ZIP codes mainly in another county that reach at least 1% into Slope County, by their share here
In this county
58651 Rhame 513 1 $76k $118k 45%
58643 Marmarth 119 1 $62k $51k 29%
58623 Bowman 1,953 4 $65k $181k 25%
58654 Sentinel Butte 244 0 $90k $114k 20%
58653 Scranton 700 2 $86k $164k 14%
58649 Reeder 354 1 $69k $73k 2%

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?

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

Share of each ZIP code's land in Slope County and in the neighboring counties
ZIPIn SlopeElsewhere
5862325%Bowman County73%; Harding County2%
5864747%Hettinger County44%; Stark County8%
5865314%Bowman County71%; Harding County15%
5865145%Bowman County55%
586492%Adams County73%; Hettinger County11%; Harding County9%; Bowman County5%
5865420%Golden Valley County80%
5862099%Billings County1%
5864329%Bowman County71%

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

Which first three digits do Slope 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 Slope County starts with 586.

Three-digit prefixes of Slope 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 Slope County's
PrefixSectional centerHereAll codes
586Bismarck, ND (SCF 585)832

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