Cass County Post Offices

330 Main St
Arthur, North Dakota 58006

305 Main St
Buffalo, North Dakota 58011

840 Front St
Casselton, North Dakota 58012

50 1st Ave
Davenport, North Dakota 58021

406 Main Ave
Erie, North Dakota 58029

657 2nd Ave N Rm 104
Fargo, North Dakota 58102

409 Front St
Gardner, North Dakota 58036

301 3rd St
Grandin, North Dakota 58038

521 Dakota Ave
Harwood, North Dakota 58042

91 Main St N
Horace, North Dakota 58047

107 Main St
Hunter, North Dakota 58048

472 Elm St
Kindred, North Dakota 58051

406 Railroad Ave S
Leonard, North Dakota 58052

651 2nd St
Mapleton, North Dakota 58059

137 Morton Ave
Page, North Dakota 58064

1455 32nd St S
Fargo, North Dakota 58103

505 Broadway St
Tower City, North Dakota 58071

415 Main Ave E
West Fargo, North Dakota 58078

Cass County

There are 18 US Post Offices in Cass County serving a total of 117,377 residents equating to 6,521 residents per post office. It's estimated that approximately 187,347 packages are handled across the 18 county post offices annually. Cass County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 149,778, and was estimated to be 171,512 in 2015. Cass County is the most populous county in North Dakota, accounting for nearly 23% of the state's population. Its county seat is Fargo, the most populous city in the state. The county was organized on October 27, 1873. Cass County is part of the Fargo, ND-MN Metropolitan Statistical Area."