Merilou is a girl name. It last appears in U.S. records in 1936. Merilou first appears in 1935 and peaked in 1935 (6 births).
How popular is Merilou? (U.S. births per year)
Girls named Merilou
Girls named Merilou per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1935–1936 · U.S.+territories from SSA territory files (1998–1936)