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County ZIP codes · North Dakota · FIPS 38019

Cavalier County, ND ZIP Codes

Cavalier County, North Dakota has 18 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 10 of the residential ones lie mainly in Cavalier County and 8 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $61,199 in 58220 (Cavalier) to $64,571 in 58249 (Langdon) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Cavalier County?

58220 · Cavalier: $61k58227 · Edinburg: $78k58229 · Fairdale: $29k58239 · Hannah: $146k58249 · Langdon: $65k58255 · Maida: –58260 · Milton: $58k58269 · Osnabrock: –58281 · Wales: $129k58282 · Walhalla: $52k58311 · Alsen: $82k58323 · Calvin: $250k+58330 · Edmore: $71k58338 · Hampden: $65k58352 · Munich: $94k58355 · Nekoma: $104k58372 · Sarles: $155k58377 · Starkweather: $92k582495835258282582205833058281583775837258260583385823958227582295831158323582695835558220 · Cavalier: $61k58227 · Edinburg: $78k58229 · Fairdale: $29k58239 · Hannah: $146k58249 · Langdon: $65k58255 · Maida: –58260 · Milton: $58k58269 · Osnabrock: –58281 · Wales: $129k58282 · Walhalla: $52k58311 · Alsen: $82k58323 · Calvin: $250k+58330 · Edmore: $71k58338 · Hampden: $65k58352 · Munich: $94k58355 · Nekoma: $104k58372 · Sarles: $155k58377 · Starkweather: $92k582495835258282582205833058281583775837258260583385823958227582295831158323582695835558220 · Cavalier: $61k58227 · Edinburg: $78k58229 · Fairdale: $29k58239 · Hannah: $146k58249 · Langdon: $65k58255 · Maida: –58260 · Milton: $58k58269 · Osnabrock: –58281 · Wales: $129k58282 · Walhalla: $52k58311 · Alsen: $82k58323 · Calvin: $250k+58330 · Edmore: $71k58338 · Hampden: $65k58352 · Munich: $94k58355 · Nekoma: $104k58372 · Sarles: $155k58377 · Starkweather: $92k582495835258282582205833058281583775837258260583385823958227582295831158323
The residential ZIP codes of Cavalier 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 18 postal town names.

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

All 18 residential ZIP codes in Cavalier County

10 ZIP codes lie mainly in Cavalier County; 8 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Cavalier County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58249 Langdon 2,217 5 $65k $149k 100%
58352 Munich 436 2 $94k $121k 88%
58260 Milton 256 2 $58k $87k 98%
58269 Osnabrock 139 2 – $35k 100%
58323 Calvin 72 1 $250k+ – 82%
58311 Alsen 60 1 $82k $97k 100%
58239 Hannah 58 1 $146k – 100%
58281 Wales 57 0 $129k $80k 100%
58355 Nekoma 22 1 $104k $113k 100%
58255 Maida no residents 0 – – 100%

Partly in Cavalier County

Residential ZIP codes mainly in another county that reach at least 1% into Cavalier County, by their share here
In this county
58338 Hampden 106 1 $65k $114k 46%
58282 Walhalla 1,321 6 $52k $107k 44%
58372 Sarles 122 1 $155k $134k 43%
58229 Fairdale 97 1 $29k $109k 33%
58377 Starkweather 177 1 $92k $138k 14%
58227 Edinburg 481 4 $78k $115k 11%
58220 Cavalier 2,268 13 $61k $183k 8%
58330 Edmore 437 2 $71k $93k 2%

Download the 18 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?

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

Share of each ZIP code's land in Cavalier County and in the neighboring counties
ZIPIn CavalierElsewhere
582208%Pembina County 92%
5828244%Pembina County 56%
5822711%Walsh County 49%; Pembina County 40%
583302%Ramsey County 98%
5835288%Towner County 12%
5826098%Walsh County 2%
5837714%Ramsey County 68%; Towner County 18%
5837243%Towner County 57%
5833846%Ramsey County 54%
5822933%Walsh County 61%; Ramsey County 6%
5832382%Towner County 18%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Cavalier County's ZIP codes use 2 prefixes: 582 and 583.

Three-digit prefixes of Cavalier 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 Cavalier County's
PrefixSectional centerHereAll codes
582 Grand Forks, ND (SCF 582) 10 61
583 Grand Forks, ND (SCF 582) 8 50

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