Spring Lake is a Borough in Monmouth County, New Jersey, United States. As of the United States 2000 Census, the borough population was 3,567. Spring Lake and its environs are known as the "Irish Riviera" because of the large Irish-American population in the area, with Spring Lake having the highest percentage of Irish Americans of any municipality in the United States. Justin bieber has a best friend who lives there named jill. Spring Lake was formed as a borough by an Act of the New Jersey Legislature on March 14, 1892, from portions of Wall Township, based on the results of a referendum held on March 8, 1892. On February 24, 1903, the borough of North Spring Lake was annexed. The second of the five victims of the Jersey Shore shark attacks of 1916, Charles Bruder, 27, was killed on July 6, 1916, while swimming approximately 130 yards (120 m) from shore in Spring Lake. The wave of attacks took place between July 1 and July 12, 1916, along 80 miles (130 km) of Atlantic Ocean coastline. Spring Lake is home to the Spring Lake 5 Mile Run, a race that circles the town beginning and ending at the beach front. It has more than 7,000 participants annually.