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County ZIP codes · North Dakota · FIPS 38001

Adams County, ND ZIP Codes

Adams County, North Dakota has 6 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Adams County and 4 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $58,533 in 57638 (Lemmon) to $63,636 in 58639 (Hettinger) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Adams County?

57638 · Lemmon: $59k58562 · New Leipzig: $63k58639 · Hettinger: $64k58646 · Mott: $57k58649 · Reeder: $69k58650 · Regent: $74k57638586395864658649586505856257638 · Lemmon: $59k58562 · New Leipzig: $63k58639 · Hettinger: $64k58646 · Mott: $57k58649 · Reeder: $69k58650 · Regent: $74k57638586395864658649586505856257638 · Lemmon: $59k58562 · New Leipzig: $63k58639 · Hettinger: $64k58646 · Mott: $57k58649 · Reeder: $69k58650 · Regent: $74k576385863958646586495865058562
The residential ZIP codes of Adams 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 6 postal town names: Lemmon, Hettinger, Mott, Regent, New Leipzig, Reeder.

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

All 6 residential ZIP codes in Adams County

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

Residential ZIP codes mainly in Adams County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58639 Hettinger 1,762 3 $64k $117k 79%
58649 Reeder 354 1 $69k $73k 73%

Partly in Adams County

Residential ZIP codes mainly in another county that reach at least 1% into Adams County, by their share here
In this county
57638 Lemmon 1,852 2 $59k $101k 25%
58646 Mott 1,161 2 $57k $93k 9%
58562 New Leipzig 400 1 $63k $100k 8%
58650 Regent 434 1 $74k $98k 7%

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?

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

Share of each ZIP code's land in Adams County and in the neighboring counties
ZIPIn AdamsElsewhere
5763825%Perkins County 60%; Grant County 5%; Sioux County 5%; Corson County 5%
5863979%Perkins County 21%
586469%Hettinger County 90%; Stark County 1%
586507%Hettinger County 93%
585628%Grant County 63%; Hettinger County 29%
5864973%Hettinger County 11%; Harding County 9%; Bowman County 5%; Slope County 2%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Adams County's ZIP codes use 3 prefixes: 576, 585 and 586.

Three-digit prefixes of Adams 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 Adams County's
PrefixSectional centerHereAll codes
576 Bismarck, ND (SCF 585) 1 32
585 Bismarck, ND (SCF 585) 1 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.