Data Last Updated: July 1, 2025

Cass County, ND ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Cass, ND.	39 ZIP Codes (24 General, 5 PO Box, 5 Unique, & 5 Multi County) [More Details]
Area Code: The Telephone Area Code that are associated with Cass, ND. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	701
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Central
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Cass, ND from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	184,525 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	38017
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	Fargo, ND-MN
Land Area: The approximate amount of land area covered by Cass, ND in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	1,765 square miles
Water Area: The approximate amount of water area covered by Cass, ND in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	3 square miles
Coordinates: The latitude/longitude centroid coordinates for Cass County, ND.	-97.248034, 46.932976
Quick Link: Copy the direct link to the Cass, NDCounty page and use anywhere you like!	https://www.zip-codes.com/county/nd-cass.asp

Cass, ND ZIP Code Boundaries

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Cass County, ND Covers 39 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 58002	General	Absaraka	28	0.02%
ZIP Code 58004	General	Amenia	224	0.12%
ZIP Code 58005	General	Argusville	783	0.42%
ZIP Code 58006	General	Arthur	392	0.21%
ZIP Code 58007	General	Ayr	111	0.06%
ZIP Code 58011	General	Buffalo	406	0.22%
ZIP Code 58012	General	Casselton	2,636	1.43%
ZIP Code 58015 *	General	Christine	288	--
ZIP Code 58021	General	Davenport	443	0.24%
ZIP Code 58027 *	General	Enderlin	1,415	--
ZIP Code 58029	General	Erie	129	0.07%
ZIP Code 58031 *	General	Fingal	418	--
ZIP Code 58035 *	General	Galesburg	225	--
ZIP Code 58036	General	Gardner	389	0.21%
ZIP Code 58038	General	Grandin	310	0.17%
ZIP Code 58042	General	Harwood	1,395	0.76%
ZIP Code 58047	General	Horace	4,216	2.28%
ZIP Code 58048	General	Hunter	562	0.30%
ZIP Code 58051	General	Kindred	1,706	0.92%
ZIP Code 58052	General	Leonard	551	0.30%
ZIP Code 58059	General	Mapleton	1,697	0.92%
ZIP Code 58064	General	Page	410	0.22%
ZIP Code 58068 *	General	Sheldon	309	--
ZIP Code 58071	General	Tower City	500	0.27%
ZIP Code 58078	General	West Fargo	39,161	21.22%
ZIP Code 58079	General	Wheatland	537	0.29%
ZIP Code 58102	General	Fargo	30,767	16.67%
ZIP Code 58103	General	Fargo	46,754	25.34%
ZIP Code 58104	General	Fargo	48,150	26.09%
ZIP Code 58105	P.O. Box	Fargo	2,524	1.37%
ZIP Code 58106	P.O. Box	Fargo	0	0.00%
ZIP Code 58107	P.O. Box	Fargo	0	0.00%
ZIP Code 58108	P.O. Box	Fargo	0	0.00%
ZIP Code 58109	P.O. Box	Fargo	0	0.00%
ZIP Code 58121	Unique	Fargo	0	0.00%
ZIP Code 58122	Unique	Fargo	0	0.00%
ZIP Code 58124	Unique	Fargo	0	0.00%
ZIP Code 58125	Unique	Fargo	0	0.00%
ZIP Code 58126	Unique	Fargo	0	0.00%

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Cass, ND, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Cass, ND Information

Cass County, ND Covers 39 ZIP Codes. This includes 24 General ZIP Codes, 5 PO Box ZIP Codes, and 5 Unique (reserved for Business and Volume Mail Receivers). There are also 5 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Cass County.

The population for Cass County is 184,525, according to the U.S. Census. Population Density is 104.55 persons per square mile. With 85,397 Housing Units, the Average Household Size is 2.27 persons. There are 78,672 Family Households with an Average Family Size of 3.03 persons. 5.15% of the population is without Health Insurance. The 73.82% Employment Rate is 14.02% above the national average of 59.8%.119,321 people aged 25+ have some educational achievement, with 43.28% (or 51,648 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

701 is the only area code for this area. Cass is also located in the Central timezone and the current local time is shown above.

Cass is part of the Fargo, ND-MN Core Based Statistical Area (CBSA). Its CBSA Code is 22020.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Cass, ND have 88,673 Residential mailboxes and 5,836 Business mailboxes.There are 5,931 businesses with a total of 107,839 employees. That is an average of 18.2 employees per business. Annual payroll for these businesses is $6,607,448,000. Other Demographics

Cass County Demographic Profile

Population & People

Total Population

184,525

Income

Median Household Income

$75,023

Housing

Total Housing Units

85,397

Health

Without Healthcare Coverage

5.15%

Business & Economy

Total Businesses

5,931

Families

Total Households

78,672

Employment

Employment Rate

73.82%

Education

Bachelor's Degree or Higher

43.28%

Total Population: Total number of people from the 2020 U.S. Census for Cass, ND. This reflects the exact count of this area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	184,525
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Cass, ND. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	202,512
Total Households: Total number of Households from the 2020 U.S. Census for Cass, ND. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	78,672
Total Housing Units: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.	85,397
Average Household Size: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.27
Average Family Size: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	3.03

Other Cass Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	88,673
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	5,836
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	115,854
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	33,075
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	36,946

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	5,931
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$1,559,824,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$6,607,448,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	107,839

Sum of all ZIP Codes assigned Cass, ND as their primary County.

References

U.S. Postal Service [Last Updated: 7/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 7/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov