Warsaw is an unincorporated community in Walsh County, North Dakota in the United States. It is about 5.5 miles east of Minto (mailing addresses in Warsaw say "Minto, North Dakota" because mail is delivered by postal workers based there) and about 15 miles southeast of Grafton, the county seat. Although it is unincorporated, its name has official status. It is in an area of Walsh County that was settled in the 19th century by immigrants from Poland, and which remained a predominantly Polish-speaking area well beyond the middle of the 20th century. The Catholic Church of St. Stanislaus in Warsaw, built in 1901, is listed in the National Register of Historic Places.