Willmar (/ˈwɪlmər/ WIL-mər) is a city in, and the county seat of, Kandiyohi County, Minnesota, United States. The population was 21,015 at the 2020 census.

Agricultural expansion and the establishment of Willmar as a division point on the Great Northern Railway determined its growth. The first settlers arrived during the 1850s, attracted to the fertile land and an abundance of timber and game. The Dakota War of 1862 left the township abandoned for several years. The advent of the railroad in Kandiyohi County in 1869 brought new settlers. Many were of Swedish and Norwegian origin; residents of Scandinavian heritage are still a majority. In 1870, Leon (Chadwick) Willmar, a Belgian acting as an agent for the European bondholder of the St. Paul and Pacific Railroad, purchased the title to Section 1 of Willmar Township. Willmar was established as the county seat in 1871 and was incorporated as a village in 1874 and as a city in 1901.

Willmar was the site of a bank robbery by the Machine Gun Kelly gang on July 15, 1930. They robbed the Bank of Willmar (later Otto Bremer Trust) of about $70,000 (equivalent to $1,277,000 in 2023) and wounded three people.

The Willmar Memorial Auditorium, designed by architect William Ingemann, was the largest assembly hall within 70 miles when completed in 1938. It was funded by the city of Willmar and state and federal governments as a Depression-era works project. It contains several murals by Richard Haines commissioned by the Federal Art Project, and wood paneling in the oak doors by WPA artists. It is on the National Register of Historic Places.

From 1977 to 1979, Willmar was the site of the Willmar 8, a strike of female workers confronting sexual discrimination at a local bank. The story of the strike was reported in mainstream media and made into a documentary.

The music of Willmar native Bradley Joseph draws inspiration from his childhood there, and his company, Robbins Island Music, is named after a Willmar city park.

Willmar was home to the annual Sonshine Festival, a Christian music festival, from 1982 to 2014.

According to the United States Census Bureau, the city has an area of 15.95 square miles (41.31 km), of which 14.15 square miles (36.65 km) is land and 1.80 square miles (4.66 km) is water.

The 45° latitude line passes just south of Willmar, placing it approximately halfway between the equator and the North Pole.

Historical population

Census	Pop.	Note	%±
1880	1,002		—
1890	1,825		82.1%
1900	3,409		86.8%
1910	4,135		21.3%
1920	5,892		42.5%
1930	6,173		4.8%
1940	7,623		23.5%
1950	9,410		23.4%
1960	10,417		10.7%
1970	12,869		23.5%
1980	15,895		23.5%
1990	17,531		10.3%
2000	18,351		4.7%
2010	19,610		6.9%
2020	21,015		7.2%
2022 (est.)	21,282		1.3%
U.S. Decennial Census 2020 Census

As of the census of 2010, there were 19,610 people, 7,677 households, and 4,538 families living in the city. The population density was 1,385.9 inhabitants per square mile (535.1/km). There were 8,123 housing units at an average density of 574.1 per square mile (221.7/km). The racial makeup of the city was 86.9% White, 4.8% African American, 0.5% Native American, 0.6% Asian, 0.1% Pacific Islander, 5.4% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 20.9% of the population.

There were 7,677 households, of which 30.5% had children under the age of 18 living with them, 42.6% were married couples living together, 12.2% had a female householder with no husband present, 4.3% had a male householder with no wife present, and 40.9% were non-families. 32.4% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 3.10.

The median age in the city was 33.8 years. 25.2% of residents were under the age of 18; 12.7% were between the ages of 18 and 24; 24.1% were from 25 to 44; 22.2% were from 45 to 64; and 15.8% were 65 years of age or older. The gender makeup of the city was 48.8% male and 51.2% female.

As of the census of 2000, there were 18,351 people, 7,302 households, and 4,461 families living in the city. The population density was 1,549.9 inhabitants per square mile (598.4/km). There were 7,789 housing units at an average density of 657.8 per square mile (254.0/km). The racial makeup of the city was 88.12% White, 0.90% African American, 0.46% Native American, 0.53% Asian, 0.11% Pacific Islander, 8.52% from other races, and 1.36% from two or more races. Hispanic or Latino of any race were 15.86% of the population.

There were 7,302 households, out of which 31.3% had children under the age of 18 living with them, 47.3% were married couples living together, 10.0% had a female householder with no husband present, and 38.9% were non-families. 31.2% of all households were made up of individuals, and 12.7% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 3.08.

In the city, the population was spread out, with 26.2% under the age of 18, 12.0% from 18 to 24, 26.4% from 25 to 44, 19.0% from 45 to 64, and 16.4% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 91.0 males. For every 100 females age 18 and over, there were 86.6 males.

The median income for a household in the city was $33,455, and the median income for a family was $45,415. Males had a median income of $31,575 versus $22,158 for females. The per capita income for the city was $18,515. About 8.4% of families and 13.1% of the population were below the poverty line, including 16.2% of those under the age of 18 and 8.0% of those 65 and older.

Since 1989, Willmar has had a large influx of immigrants from Latin America and Northeast Africa, mostly due to the demand for labor at the Jennie-O poultry plant. In 2001, the city was recognized as an "All America City" by the National Civic League, in part for its success as growing numbers of immigrants became part of the community.

In 2005, the city received attention from national media after several Somali-American high school students gave Willmar High School its first cross-country state championship in 20 years. The team won the state tournament and attended the Nike Nationals consecutively in 2005 and 2006. Following its success, the city gained attention from Sports Illustrated. Subsequently, NBC Nightly News ran a story on Willmar's changing complexion and its acceptance of its new citizens.

More national attention was received when an opinion piece about immigration and Willmar by Thomas Friedman appeared in the New York Times on May 14, 2019.

Willmar is home to Ridgewater College, a community and technical college on the site of a former military base. It has a sister college in Hutchinson. Ridgewater enrolls over 5,500 students and provides a moderate range of programs, in addition to providing access to some four-year programs through relationships with universities in the MnSCU system. It is also home to Willmar High School and Willmar Community Christian School.

U.S. Highways 12 and 71 and Minnesota State Highways 23 and 40 are four of the main routes in the city.

The development of Willmar benefited greatly from being situated at the junction of multiple railway lines. From Willmar, the Great Northern Railway had lines radiating east to Minneapolis and St. Paul, northwest to Fargo and Seattle, northeast to St. Cloud and Duluth, and southwest to Sioux Falls and Yankton. Willmar was served by numerous passenger trains over the years. The last passenger train left Willmar station in 1979.

Team	League	Venue
Willmar Stingers	Northwoods League, Baseball	Bill Taunton Stadium
Willmar WarHawks	NA3HL, Ice Hockey	Willmar Civic Center

• West Central Tribune
• La Gran America (Trilingual newspaper)

• Seasons of Minnesota

• UHF-TV Inc.

WRAC TV - Regional Access Channel

Channel	Callsign	Affiliation	Branding	Subchannels		Owner
(Virtual)				Channel	Programming
4.1	K33OT-D (WCCO Translator)	CBS	WCCO 4	4.2	Start TV	UHF Television, Inc.
9.9	K30FZ-D (KMSP Translator)	FOX	FOX 9	9.4 9.5 9.6	Buzzr Light TV Decades	UHF Television, Inc.
9.2	K36OL-D (WFTC Translator)	Ind.	FOX 9 Plus	9.3 9.1	Movies! FOX	UHF Television, Inc.
10.1	K22ND-D (KWCM Translator)	PBS	Pioneer Public TV	10.2 10.3 10.4 10.5	Create Minnesota Channel World PBS Kids	UHF Television, Inc.
11.1	K17FA-D (KARE Translator)	NBC	KARE 11	11.2 11.3 11.4	Court TV True Crime Network Quest	UHF Television, Inc.
23.1	K14LF-D (WUCW Translator)	CW	CW 23	23.2 23.3 23.4	Comet Charge! TBD	UHF Television, Inc.
28.1	K28IF-D	TBN		28.2 28.3	Hillsong Channel JUCE TV	UHF Television, Inc.
34.1	K34HO-D	Reelz		5.4 5.6 34.2 34.3	Antenna TV This TV Kool-TV Retro TV	UHF Television, Inc.
35.1	K35NR-D	Heartland		35.2 35.3 35.4	Retro TV Rev'n Family	UHF Television, Inc.
41.1	K26NU-D (KPXM Translator)	ION	ION	41.2 41.3 41.4 41.5 41.6	Qubo Ion Plus ION Shop QVC HSN	UHF Television, Inc.
42.1	K19IH-D (KSAX Translator)	ABC	5 Eyewitness News	42.2 42.3	45TV MeTV	UHF Television, Inc.

• Charter Communications
• DirecTV
• Dish Network

AM radio stations
Frequency	Call sign	Name	Format	Owner
1340	KWLM		News/Talk	Lakeland Broadcasting Company
1590	KDJS		Classic country	Iowa City Broadcasting Company

FM radio stations
Frequency	Call sign	Name	Format	Owner
90.9	KKLW	K-Love	Christian	Educational Media Foundation
91.9	KBHZ	Praise Live	Christian	North Central University
92.7	K224DB (KTIS-FM Translator)	Life 98.5	Contemporary Christian	University of Northwestern - St. Paul
94.1	KKLN	94.1 The Loon	Classic rock	Headwaters Media, Inc.
95.3	KDJS	K-95.3	Country	Iowa City Broadcasting, Inc.
96.3	K242CF (KWLM-AM Translator)		News/Talk	Lakeland Broadcasting Company
100.1	KOLV	Big Country 100.1	Country	Bold Radio, Inc.
102.5	KQIC	Q102	Hot AC	Lakeland Broadcasting Company
103.3	K277CC (KTIS-AM Translator)	Faith 900	Christian talk and teaching	University of Northwestern - St. Paul
105.7	K289CO (KDJS-AM Translator)		Classic country	Iowa City Broadcasting Company
106.5	KLFN	106.5 The Train	Classic Hits	Lakeland Broadcasting Company

• Thomas K. Berg – politician and lawyer
• Wallace Gustafson – lawyer and politician
• Olof Hanson – architect
• Bonnie Henrickson – head women's college basketball coach at UC Santa Barbara
• Roy C. Jensen – farmer and politician
• Dean Johnson – politician
• Robert George Johnson – politician
• Carl O. Jorgenson – politician
• Bradley Joseph – composer and recording artist
• Pinky Nelson – astronaut
• Alec G. Olson – politician
• Earl B. Olson – founder of the Jennie-O Turkey company
• Kenneth L. Olson – United States Army soldier
• Jim Pederson (American football) - professional football player
• Henrik Shipstead – politician
• Curt Swan – illustrator of Superman comics from the 1950s to the 1980s
• Rick Swenson – dog musher and Iditarod participant
• Alan Welle – politician and businessman
• Henry G. Young – lawyer and politician

Willmar has two sister cities, as designated by Sister Cities International:

• Yakutsk, Russia
• Vileyka, Belarus

• City of Willmar – Official Website
• The Official Willmar Lakes Area Community site
• The Official Willmar Lakes Area Chamber of Commerce
• Official website of the Willmar Public School District