This template is used as an information box on pages, showing each census year with a population, and a percent gain/loss comparison. See Alabama as an example of how this template is rendered.

{{US Census population
| align=
| 1790= 
| 1800=	
| 1810=	
| 1820=	
| 1830=	
| 1840=	
| 1850=	
| 1860=	
| 1870=	
| 1880=	
| 1890=	
| 1900=	
| 1910=	
| 1920=	
| 1930=	
| 1940=	
| 1950=	
| 1960=	
| 1970=	
| 1980=	
| 1990=	
| 2000=	
| 2010=
| estyear=
| estimate=
| estref=
| footnote=
}}

The default alignment is to float on the right side of the page. To float it to the left, use |align=left. For center alignment, use |align=center. For left alignment, without wrapping text around it, use |align=none.