Taʻū County is a county in the Manu'a District in American Samoa.

Demographics

Historical population

Year	Pop.	±%
1912	480	—
1920	551	+14.8%
1930	562	+2.0%
1940	754	+34.2%
1950	771	+2.3%
1960	720	−6.6%
1970	540	−25.0%
1980	468	−13.3%
1990	436	−6.8%
2000	380	−12.8%
2010	358	−5.8%
U.S. Decennial Census

Ta'u County was first recorded beginning with the 1912 special census. Regular decennial censuses were taken beginning in 1920. Its population zenith was in 1950, with 771 residents. It has since declined to its lowest point since the census began recording, just 358 residents. Manu'a District as a whole has similarly declined in population since that time.

Villages

• Amouli, Ta'u County (now ghost)
• Luma
• Si'ufaga