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zipcodes.pro — STATE/ND/COUNTY/CASS

Cass County, ND ZIP codes

There are 34 ZIP codes in Cass County, ND, in 22 towns, from 58002 to 58126. The largest are 58104 (Fargo), 58103 (Fargo) and 58078 (West Fargo).

The county seat is Fargo.

ZIP codes
34
Towns
22
County seat
Fargo
County FIPS
38017
Population
193,400
Median household income
$75,555
Land area
1,765 sq mi
Area code
701
Metro area
Fargo

Cass County ZIP codes by town

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Cass County ZIP codes

58002580045800558006580075801158012580215802958031580365804258047580485805158052580595806458071580785807958102581035810458105581065810758108581095812158122581245812558126

The ZIP codes of Cass County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Cass County in numbers

About 193,400 people live in Cass County, in 83,945 households, the most populous of North Dakota's 53 counties. The median household income is $75,555 a year, about the same as the North Dakota median of $76,657 (US: $80,734). The median owner-occupied home is valued at $298,000 (19% above the North Dakota median), and median gross rent is $958 a month. The median age is 32.8; 42.6% of adults 25 and over hold a bachelor's degree or higher (32.7% across North Dakota); the average commute takes 17 minutes.

Population193,400Cass193,400
Households83,945Cass83,945
Median age32.8Cass32.8North Dakota35.9US 38.9
Median household income$75,555Cass$75,555North Dakota$76,657US $80,734
Median home value$298,000Cass$298,000North Dakota$249,900US $332,700
Median gross rent$958Cass$958North Dakota$954US $1,413
Bachelor's degree or higher42.6%Cass42.6%North Dakota32.7%US 35.7%
Mean commute17.1 minCass17.1 minNorth Dakota17.9 minUS 26.4 min
Population density110 / sq miCass110 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Cass County

Largest towns in Cass County
TownZIP codesPopulation
Fargo 13 131,627
West Fargo 1 40,094
Horace 1 4,588
Casselton 1 2,953
Mapleton 1 1,352
Kindred 1 996
Harwood 1 819
Argusville 1 584
Arthur 1 392
Tower City 1 304
Hunter 1 292
Leonard 1 248
Davenport 1 245
Buffalo 1 180
Fingal 1 174

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Cass County.

Not sure you are in Cass County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Cass County, with figures

ZIP codes in Cass County
ZIP City Type Population Median income Median home
58002 Absaraka , ND Standard 17 — —
58004 Amenia , ND Standard 241 $72,250 $208,300
58005 Argusville , ND Standard 898 $142,917 $356,800
58006 Arthur , ND Standard 573 $95,313 $260,900
58007 Ayr , ND Standard 81 $81,250 $168,800
58011 Buffalo , ND Standard 449 $99,853 $245,400
58012 Casselton , ND Standard 3,049 $75,000 $283,700
58021 Davenport , ND Standard 584 $108,750 $244,800
58029 Erie , ND Standard 88 $145,625 $400,000
58031 Fingal , ND Standard 301 $57,438 $70,800
58036 Gardner , ND Standard 360 $100,625 $292,200
58042 Harwood , ND Standard 1,344 $137,500 $347,100
58047 Horace , ND Standard 5,636 $142,361 $432,200
58048 Hunter , ND Standard 505 $100,227 $175,000
58051 Kindred , ND Standard 1,980 $107,396 $331,100
58052 Leonard , ND Standard 529 $87,813 $253,800
58059 Mapleton , ND Standard 1,670 $115,469 $331,800
58064 Page , ND Standard 332 $75,625 $223,300
58071 Tower City , ND Standard 486 $109,375 $194,300
58078 West Fargo , ND Standard 40,631 $91,040 $324,100
58079 Wheatland , ND Standard 504 $126,477 $350,000
58102 Fargo , ND Standard 32,912 $59,533 $242,200
58103 Fargo , ND Standard 48,796 $58,801 $242,400
58104 Fargo , ND Standard 49,168 $85,747 $359,400
58105 Fargo , ND Standard 2,825 $123,636 —
58106 Fargo , ND No street area — — —
58107 Fargo , ND No street area — — —
58108 Fargo , ND No street area — — —
58109 Fargo , ND No street area — — —
58121 Fargo , ND No street area — — —
58122 Fargo , ND No street area — — —
58124 Fargo , ND No street area — — —
58125 Fargo , ND No street area — — —
58126 Fargo , ND No street area — — —

Cite this page

zipcodes.pro. “Cass County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/nd/county/cass

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