The County of Warner No. 5 is a municipal district in southern Alberta, Canada. Located in Census Division No. 2 just north of the United States border, its municipal office is located in the Village of Warner.
The County of Warner No. 5 comprises approximately 50 townships and is bordered on the south by the Canada-United States border. It is composed of the former Municipal District of Warner No. 36 and a portion of the former Municipal District of Sugar City No. 37.
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The following urban municipalities are surrounded by the County of Warner No. 5.
The following hamlets are located within the County of Warner No. 5.
The following localities are located within the County of Warner No. 5.
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In the 2021 Census of Population conducted by Statistics Canada, the County of Warner No. 5 had a population of 4,290 living in 907 of its 1,032 total private dwellings, a change of from its 2016 population of 3,942. With a land area of , it had a population density of in 2021.
In the 2016 Census of Population conducted by Statistics Canada, the County of Warner No. 5 had a population of 3,847 living in 816 of its 941 total private dwellings, a change from its 2011 population of 3,841. With a land area of , it had a population density of in 2016.
Westwind School Division No. 74 and Horizon School Division No. 67 provide education within the boundaries of the County of Warner No. 5.
Listed below are the former school districts that once provided education within the County of Warner No. 5.